Numerical simulation of air flow behavior and nozzlegood quality

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  • Numerical simulation of airflow behaviour and nozzle ...

    A new cost-effective nozzle that can produce good quality commingled yarns at low air pressure is introduced. 3D CFD simulation and experimental studies are conducted to investigate the effect of aerodynamics of three different cylindrical nozzle configurations (CONF) on …

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  • Numerical simulation of airflow behaviour and nozzle ...

    A new cost-effective nozzle that can produce good quality commingled yarns at low air pressure is introduced. 3D CFD simulation and experimental studies are conducted to investigate the effect of aerodynamics of three different cylindrical nozzle configurations (CONF) on …

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  • Numerical simulation of airflow characteristics in the ...

    2018-8-15 · The effect of different nozzle configurations on airflow behaviour and yarn quality. Int J Mech Aerosp Ind Mechatron Manuf Eng 2012; 6: 157 – 161. Google Scholar. 15. Zeng, YC, Yu, CW. Numerical simulation of air flow in the nozzle of an air-jet spinning machine.

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  • Numerical Simulation of Ventilation Air Flow in ...

    2019-10-11 · Numerical Simulation of Ventilation Air Flow in Underground Mine Workings S.M. Aminossadati ... quantity and quality of fresh air reaching the face, as expected. Moreover, it was shown that the selection of the ... Absent in the above studies; however, is a numerical analysis of the airflow behavior within a cross-cut region of an underground ...

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  • Numerical Simulation of Flow Behavior within a Venturi ...

    2014-6-29 · The present work details the three-dimensional numerical simulation of single-phase and two-phase flow (air-water) in a venturi scrubber with an inlet and throat diameters of 250 and 122.5 mm, respectively. The dimensions and operating parameters correspond to industrial applications. The mass flow rate conditions were 0.483 kg/s, 0.736 kg/s, 0.861 kg/s, and 0.987 kg/s …

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  • Numerical research on airflow-dust migration behavior

    2021-8-1 · Based on the practical conditions of subway tunnel in Nanping Metro Station, China, a full-scale physical model was established using Solidworks software.The length of the subway tunnel was 120 m, and the cross section was a semi-circular arch, with a width, height, and area of 6.4 m, 6.4 m, 36.58 m 2, respectively.The forced air duct on site was installed in the vault of 86 m away from the ...

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  • Numerical simulation of grassland fires behavior using an ...

    2018-12-1 · Numerical simulation of grassland fires behavior using an implicit physical multiphase model. ... In return for stronger wind conditions, the structure of the air flow is less affected by the fire front as shown in Fig. 10 ... Numerical study of the behaviour of a surface fire propagating through a firebreak built in a Mediterranean shrub layer.

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  • Numerical Simulation to Air Pollution Emission Control ...

    4.2. Simulation 2: Air Pollution Emission Controlled by following the National Air Quality Standard (3 × 10 −7 kg/m 3). In the second simulation, the two-dimensional advection-diffusion equation with a domain of interest of m 2 is considered.The wind velocities in - and -direction are assumed to be and m/s, respectively. The sulfur dioxide is released at the chimney height m at the ...

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  • Numerical simulation of temperature and velocity in a ...

    2010-8-1 · The numerical model and procedures allowed calculations of cooling rates in beds of fruits and vegetables as a function of product size, air velocity, air temperature, and the depth of the bulk load. Later, Baird et al. (1988) proposed the design criteria for efficient and cost effective forced air cooling systems for fruits and vegetables.

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  • 238 questions with answers in NUMERICAL SIMULATION ...

    2021-8-27 · The numerical model for the simulation may require a time independent formulation (time scale of channel flows) which can be used to describe the gaseous flow in …

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  • Numerical simulation of airflow characteristics in the ...

    2018-8-15 · The effect of different nozzle configurations on airflow behaviour and yarn quality. Int J Mech Aerosp Ind Mechatron Manuf Eng 2012; 6: 157 – 161. Google Scholar. 15. Zeng, YC, Yu, CW. Numerical simulation of air flow in the nozzle of an air-jet spinning machine.

    Get Price
  • Numerical Simulation of Ventilation Air Flow in ...

    2019-10-11 · Numerical Simulation of Ventilation Air Flow in Underground Mine Workings S.M. Aminossadati ... quantity and quality of fresh air reaching the face, as expected. Moreover, it was shown that the selection of the ... Absent in the above studies; however, is a numerical analysis of the airflow behavior within a cross-cut region of an underground ...

    Get Price
  • Numerical Simulation of Coughed Droplets in Conference ...

    2017-1-1 · But for the no ventilation, the range of coughed droplets diffusion is the smallest. T=1s T=5s T=10s T=20s T=50s T=100s T=150s Fig. 2 The coughed droplets distribution of lateral-supply top-return, upper-supply top-return and bottom-supply upper-return The change of coughed droplets number with time is shown in Fig. 3.

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  • Numerical simulation of the flow and erosion behavior of ...

    2020-2-5 · Qili, W., Binbin, J., Mingquan, Y. et al. Numerical simulation of the flow and erosion behavior of exhaust gas and particles in polysilicon reduction furnace. Sci Rep 10, 1909 (2020). https://doi ...

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  • Numerical Modelling of the Aeroacoustic and Flow

    2020-9-25 · In addition, a chip accumulation can occur at the cutting position, which reduces the production quality and promotes double cutting. In woodworking, chip fans are often used to remove these dusts and chips. These are located directly on the tool holder and generate an air flow directed towards the spindle by the spindle rotation.

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  • Numerical Simulations and Analysis of a Low Consumption ...

    2017-9-11 · Hybrid low pressure air extractors are an economic way to enhance indoor air quality. The evaluation of their energetic performances needs the analysis of flow parameters that is typically done with wind tunnel data and numerical simulations. The purpose of this study is to analyze, numerically and experimentally, the flow and the energetic ...

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  • ISB 2011-Numerical Simulation and Experimental Study

    2019-12-2 · is to present the simulation of a 7.62x51mm caliber cartridge Full Metal Jacket (FMJ), which is an standardized ammunition worldwide used, subjected to a different air flow conditions like, transonic (0.8 – 1.2 Mach) and supersonic (1.4 Mach) speeds; and the simulation of the same cartridge but with a partial core design.

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  • Numerical simulations of Newtonian fluid flow through a ...

    2020-9-25 · Numerical analysis of turbulent air flow structure through a rectangular channel along with multiple and different types of baffle plates has been performed, which is an important issue for heat exchangers and for that the flow characteristics and pressure drop are need to be identified.

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  • Numerical Simulation of Dust Deposition in the Filter Tube ...

    2019-3-20 · In recent years, indoor air quality that deeply affected people’s health cannot be ignored. It is affected by many factors, and people have taken many measures to reduce the pollution level. In addition to diluting by controlling pollution sources and using natural ventilation, air purifiers have become one of the choices, but the results are not satisfactory. To improve the dust ...

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  • [PDF] An Overview of Experiments and Numerical

    ABSTRACT Determining the hotspots and deposition efficiencies (DEs) for aerosols in human airways is important for both research and medical purposes. The complexity of the human airways and the breathing process limit the application of in vitro measurements to only two consecutive branches of the human airway. Herein, in-depth information on in vitro experiments and state-of-the-art review ...

    Get Price
  • Team 5: Numerical Simulations of Air Flow and Heat ...

    Partial differential equations (PDEs) describe a wide range of phenomena, for example fluid flow, heat transfer, and sound propagation, among others. As such, models comprised of sets of PDEs, coupled with suitable boundary and initial conditions, are frequently used to perform computer simulations in an effort to understand the behavior of solutions, as well as being

    Get Price
  • Numerical Simulation to Air Pollution Emission Control ...

    4.2. Simulation 2: Air Pollution Emission Controlled by following the National Air Quality Standard (3 × 10 −7 kg/m 3). In the second simulation, the two-dimensional advection-diffusion equation with a domain of interest of m 2 is considered.The wind velocities in - and -direction are assumed to be and m/s, respectively. The sulfur dioxide is released at the chimney height m at the ...

    Get Price
  • Numerical simulation of the influence of fuel temperature ...

    Numerical simulation of the influence of fuel temperature and ... etration, and high‐quality air‐fuel mixture can be generated ... inner nozzle flow and spray behavior. Furthermore, with the increase in the engine power density, the injection pressure

    Get Price
  • Numerical Simulation of Air Velocity and Temperature ...

    2016-9-9 · The numerical and experimental studies in the previous section have emphasized the importance of displacement ventilation system as provide a good indoor air quality. The aim of this paper is to evaluate the usefulness of CFD techniques in modeling room air flow. Using FLUENT (6.3.26) program to investigate the velocity and temperature

    Get Price
  • Numerical Simulation of the Air Flow and Thermal

    2016-4-1 · Numerical Simulation of the Air Flow and Thermal Comfort in a Train Cabin M. Konstantinov 1 and C. Wagner 1,2 1Institute of Thermodynamics and Fluid Mechanics University of Technology Ilmenau, Germany 2Institute of Aerodynamics and Flow Technology German Aerospace Center, Göttingen, Germany Civil …

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  • (PDF) NUMERICAL SIMULATION OF AIR FLOW IN A

    NUMERICAL SIMULATION OF AIR FLOW IN A GENERAL WARD OF A HOSPITAL. Download. Related Papers. Bioaerosol deposition in single and two-bed hospital rooms: A numerical and experimental study. By Marco-Felipe King and Cem Akatay. Lattice Boltzmann Simulation of Airflow and Heat Transfer in a …

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  • NUMERICAL SIMULATION OF AIR FLOW PAST A FULL

    2013-12-12 · NUMERICAL SIMULATION OF AIR FLOW PAST A FULL HELICOPTER CONFIGURATION W. Khier, Deutsches Zentrum für Luft- und Raumfahrt e.V.(DLR), Braunschweig, Germany Abstract A detailed comparison between blind time-accurate RANS simulation of the GOAHEAD configuration and wind tunnel results is …

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  • Numerical simulation of the flow and erosion behavior of ...

    2020-2-5 · Qili, W., Binbin, J., Mingquan, Y. et al. Numerical simulation of the flow and erosion behavior of exhaust gas and particles in polysilicon reduction furnace. Sci Rep 10, 1909 (2020). https://doi ...

    Get Price
  • Developing efficient tools to evaluate indoor

    2006-9-29 · air quality parameters with respect to accuracy, sensitivity and applicability, b) to review the current capabilities in the numerical simulation of indoor air flow, c) to develop efficient simulation tools for the evaluation of indoor air quality in a test room developed for the research purposes, d) to perform

    Get Price
  • [PDF] An Overview of Experiments and Numerical

    ABSTRACT Determining the hotspots and deposition efficiencies (DEs) for aerosols in human airways is important for both research and medical purposes. The complexity of the human airways and the breathing process limit the application of in vitro measurements to only two consecutive branches of the human airway. Herein, in-depth information on in vitro experiments and state-of-the-art review ...

    Get Price
  • Team 5: Numerical Simulations of Air Flow and Heat ...

    Partial differential equations (PDEs) describe a wide range of phenomena, for example fluid flow, heat transfer, and sound propagation, among others. As such, models comprised of sets of PDEs, coupled with suitable boundary and initial conditions, are frequently used to perform computer simulations in an effort to understand the behavior of solutions, as well as being

    Get Price
  • Numerical Simulation to Air Pollution Emission Control ...

    4.2. Simulation 2: Air Pollution Emission Controlled by following the National Air Quality Standard (3 × 10 −7 kg/m 3). In the second simulation, the two-dimensional advection-diffusion equation with a domain of interest of m 2 is considered.The wind velocities in - and -direction are assumed to be and m/s, respectively. The sulfur dioxide is released at the chimney height m at the ...

    Get Price
  • Numerical simulation of the influence of fuel temperature ...

    Numerical simulation of the influence of fuel temperature and ... etration, and high‐quality air‐fuel mixture can be generated ... inner nozzle flow and spray behavior. Furthermore, with the increase in the engine power density, the injection pressure

    Get Price
  • Numerical Simulation of Air Velocity and Temperature ...

    2016-9-9 · The numerical and experimental studies in the previous section have emphasized the importance of displacement ventilation system as provide a good indoor air quality. The aim of this paper is to evaluate the usefulness of CFD techniques in modeling room air flow. Using FLUENT (6.3.26) program to investigate the velocity and temperature

    Get Price
  • Numerical Simulation of the Air Flow and Thermal

    2016-4-1 · Numerical Simulation of the Air Flow and Thermal Comfort in a Train Cabin M. Konstantinov 1 and C. Wagner 1,2 1Institute of Thermodynamics and Fluid Mechanics University of Technology Ilmenau, Germany 2Institute of Aerodynamics and Flow Technology German Aerospace Center, Göttingen, Germany Civil …

    Get Price
  • (PDF) NUMERICAL SIMULATION OF AIR FLOW IN A

    NUMERICAL SIMULATION OF AIR FLOW IN A GENERAL WARD OF A HOSPITAL. Download. Related Papers. Bioaerosol deposition in single and two-bed hospital rooms: A numerical and experimental study. By Marco-Felipe King and Cem Akatay. Lattice Boltzmann Simulation of Airflow and Heat Transfer in a …

    Get Price
  • NUMERICAL SIMULATION OF AIR FLOW PAST A FULL

    2013-12-12 · NUMERICAL SIMULATION OF AIR FLOW PAST A FULL HELICOPTER CONFIGURATION W. Khier, Deutsches Zentrum für Luft- und Raumfahrt e.V.(DLR), Braunschweig, Germany Abstract A detailed comparison between blind time-accurate RANS simulation of the GOAHEAD configuration and wind tunnel results is …

    Get Price
  • Numerical simulation of the flow and erosion behavior of ...

    2020-2-5 · Qili, W., Binbin, J., Mingquan, Y. et al. Numerical simulation of the flow and erosion behavior of exhaust gas and particles in polysilicon reduction furnace. Sci Rep 10, 1909 (2020). https://doi ...

    Get Price
  • Developing efficient tools to evaluate indoor

    2006-9-29 · air quality parameters with respect to accuracy, sensitivity and applicability, b) to review the current capabilities in the numerical simulation of indoor air flow, c) to develop efficient simulation tools for the evaluation of indoor air quality in a test room developed for the research purposes, d) to perform

    Get Price
  • [PDF] An Overview of Experiments and Numerical

    ABSTRACT Determining the hotspots and deposition efficiencies (DEs) for aerosols in human airways is important for both research and medical purposes. The complexity of the human airways and the breathing process limit the application of in vitro measurements to only two consecutive branches of the human airway. Herein, in-depth information on in vitro experiments and state-of-the-art review ...

    Get Price
  • Experiments and numerical simulations of flow field and ...

    2017-10-16 · This tool allows the measurement of the flow field around representative real industrial molds using the PIV technique and the characterization of the heat transfer thanks to thermal instrumentation. The experimental results are then compared with those derived from numerical simulations using a commercial RANS CFD code.

    Get Price
  • Numerical simulation of three-dimensional airflow in a ...

    2016-11-16 · The numerical simulation can provide insights on airflow studies and some guidelines for future prototyping and experiments to further improve the new design. Keywords dual-feed rotor spinning box , standard k-ɛ turbulence model , internal airflow , three-dimensional numerical simulation

    Get Price
  • Numerical investigation of the breakup behavior of an ...

    2018-7-3 · To better understand and control breakup mechanisms of turbulent oscillating two-phase jets, numerical investigations are conducted for a jet with liquid Reynolds number Re l = 8701 and liquid Weber number We l = 4759. Simulations are performed using a volume of fluid method.

    Get Price
  • Numerical and Experimental Modelling of an Air Flow Field ...

    The article describes the study of turbulent characteristics in the enclosed chamber of a rectangular corss-section nozzle using numerical calculations. Suitable Ansys Fluent software models were selected based on the measurements results comparison in an aerodynamic tunnel as the fluid exits the nozzle. Special attention is paid to profile velocity near the peripheral wall of the observed ...

    Get Price
  • Numerical Simulation to Air Pollution Emission Control ...

    2018-12-7 · Numerical Simulation to Air Pollution Emission Control near ... researchers studied air flow and dispersion of pollutant in urban street canyons. The Computational Fluid Dynamics ... is used to represent the behavior of air pollutant concen-trationinindustrialareas.TheGaussianplumeideaisused

    Get Price
  • Numerical Simulation and the Underlying Mechanism of a ...

    2021-4-19 · 2.2 Numerical Simulation 2.2.1 Setup of Numerical Experiments. The Advanced Research Weather Research and Forecasting (WRF) model, version 3.9 (Skamarock et al., 2008), was used to simulate the hail-producing convective system. The grid configuration is shown in Figure 3 and the model setups are summarized in Table 1.

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  • Numerical Analysis of Hybrid Ventilation Performance ...

    2016-7-2 · results are given in terms of indoor air quality and dry resultant temperatures, CO2 concentration and energy consumption. Simulations of specific weeks show the room air flow and thermal behaviour according to occupancy and outdoor conditions. Results were also extended to a whole year. The results for all the locations allowed us to see the

    Get Price
  • Numerical study of the airflow during aeration with ...

    2013-3-18 · Numerical simulation is carried out of the aeration process in a bedroom without mechanical ventilation at various levels of window opening. In such spaces indoor air replacement by outdoor fresh air is driven by the gradient between temperature of the indoor and outdoor air as it is shown by the results presented.

    Get Price
  • Evaluation of Indoor Air Quality in Classrooms Equipped ...

    Abstract In this work the evaluation of indoor air quality in a classroom equipped with cross-flow ventilation is presented. A numerical methodology, based on comparison with experimental data, used in the evaluation of the air exchange rate, airflow rate and the age of the air, was applied in the first phase of this work. The evolution of carbon dioxide inside spaces, with different airflow ...

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  • Influences of ventilation parameters on flow field and ...

    2020-5-22 · Therefore, the numerical simulation of the flow field structure and dust migration in the roadway under the conditions of air velocity v = 13 m/s, 20 m/s and 30 m/s is carried out.

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  • Experiments and numerical simulations of flow field and ...

    2017-10-16 · This tool allows the measurement of the flow field around representative real industrial molds using the PIV technique and the characterization of the heat transfer thanks to thermal instrumentation. The experimental results are then compared with those derived from numerical simulations using a commercial RANS CFD code.

    Get Price
  • Numerical simulation of the influence of fuel

    Numerical simulation of the influence of fuel temperature and ... etration, and high‐quality air‐fuel mixture can be generated ... inner nozzle flow and spray behavior. Furthermore, with the increase in the engine power density, the injection pressure

    Get Price
  • Numerical simulation of three-dimensional airflow in a ...

    2016-11-16 · The numerical simulation can provide insights on airflow studies and some guidelines for future prototyping and experiments to further improve the new design. Keywords dual-feed rotor spinning box , standard k-ɛ turbulence model , internal airflow , three-dimensional numerical simulation

    Get Price
  • Numerical and Experimental Modelling of an Air Flow Field ...

    The article describes the study of turbulent characteristics in the enclosed chamber of a rectangular corss-section nozzle using numerical calculations. Suitable Ansys Fluent software models were selected based on the measurements results comparison in an aerodynamic tunnel as the fluid exits the nozzle. Special attention is paid to profile velocity near the peripheral wall of the observed ...

    Get Price
  • Numerical Simulation to Air Pollution Emission Control ...

    2018-12-7 · Numerical Simulation to Air Pollution Emission Control near ... researchers studied air flow and dispersion of pollutant in urban street canyons. The Computational Fluid Dynamics ... is used to represent the behavior of air pollutant concen-trationinindustrialareas.TheGaussianplumeideaisused

    Get Price
  • Two-Dimensional Simulation of Air Flow in the Transfer ...

    2018-2-17 · The ratio of the circumferential velocity of opening roller to mean air flowing velocity is identified as a critical parameter to classify differences in flow patterns. If the ratio is a constant, the flow pattern will not explicitly change, but the drag force will increase with the increase in Reynolds number.

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  • Evaluation of Indoor Air Quality in Classrooms Equipped ...

    Abstract In this work the evaluation of indoor air quality in a classroom equipped with cross-flow ventilation is presented. A numerical methodology, based on comparison with experimental data, used in the evaluation of the air exchange rate, airflow rate and the age of the air, was applied in the first phase of this work. The evolution of carbon dioxide inside spaces, with different airflow ...

    Get Price
  • Direct numerical simulation of a bubble motion in a ...

    The numerical simulation reproduces well the torque oscillations until the damping brings their magnitudes around the noise level. The damping of the oscillation is more important with the higher filling ratio because more liquid is subjected to the centrifugal acceleration. Finally, during the zero velocity phase at the end, the torque remains ...

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  • Publications – Flow Analysis and Simulation Team

    Kakarantzas, S., I.E. Sarris and N.S. Vlachos, ‘Direct numerical simulation of magnetohydrodynamic liquid metal flow between isothermal cylinders with internal heat generation’, Numerical Heat Transfer Part A – Applications, vol. 65(5), pp. 401-418, 2014.

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  • Mesh Type and Number for the CFD Simulations of Air ...

    2015-4-2 · (2015). Mesh Type and Number for the CFD Simulations of Air Distribution in an Aircraft Cabin. Numerical Heat Transfer, Part B: Fundamentals: Vol. 67, No. 6, pp. 489-506.

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  • Numerical Simulation to Air Pollution Emission Control ...

    2018-12-7 · Numerical Simulation to Air Pollution Emission Control near ... researchers studied air flow and dispersion of pollutant in urban street canyons. The Computational Fluid Dynamics ... is used to represent the behavior of air pollutant concen-trationinindustrialareas.TheGaussianplumeideaisused

    Get Price
  • Numerical Analysis of Hybrid Ventilation Performance ...

    2016-7-2 · results are given in terms of indoor air quality and dry resultant temperatures, CO2 concentration and energy consumption. Simulations of specific weeks show the room air flow and thermal behaviour according to occupancy and outdoor conditions. Results were also extended to a whole year. The results for all the locations allowed us to see the

    Get Price
  • NUMERICAL AND EXPERIMENTAL INVESTIGATION OF

    2013-3-6 · Page 1 6 NUMERICAL AND EXPERIMENTAL INVESTIGATION OF FLOW BEHAVIOR IN A CONFLUENT JET VENTILATION SYSTEM FOR INDUSTRIAL PREMISES K. Svensson1,*, S. Ghahremanian1,2, B. Moshfegh1,2, M. Tummers3 1Division of Energy Systems, Department of Management and Engineering, Linköping University, SE-581 83 Linköping, Sweden

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  • Numerical study of the airflow during aeration with ...

    2013-3-18 · Numerical simulation is carried out of the aeration process in a bedroom without mechanical ventilation at various levels of window opening. In such spaces indoor air replacement by outdoor fresh air is driven by the gradient between temperature of the indoor and outdoor air as it …

    Get Price
  • Numerical Study of the Behaviors of Ventilated ...

    The flow unsteadiness is simulated by adding a harmonic varying vertical velocity term matching that produced from a pair of flapping hydrofoils in the experiments [13,15]. The numerical method is first validated through the experiments under specific steady and unsteady flow conditions.

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  • Numerical Analysis of Airway Mucus Clearance

    2020-2-6 · The numerical simulations are conducted using ANSYS 17.0. ... that of water because of the high airflow produced in cough behavior. ... aerosol on the air flow dynamics of the maximal voluntary ...

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  • Numerical Simulations and Analysis of a Low Consumption ...

    2017-9-11 · Hybrid low pressure air extractors are an economic way to enhance indoor air quality. The evaluation of their energetic performances needs the analysis of flow parameters that is typically done with wind tunnel data and numerical simulations. The purpose of this study is to analyze, numerically and experimentally, the flow and the energetic ...

    Get Price
  • Numerical Investigation of Indoor Aerosol Particle ...

    2009-7-1 · Tian L. , Lin Z. , Liu J. , Wang QW : Numerical study of indoor air quality and thermal comfort under stratum ventilation: Progress CFD 2008;8(7/8): 541-548. Google Scholar Nielsen PV : Flow in air …

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  • Flow behaviour in a ventilated room : measurements and ...

    2005-6-7 · However, the determination of ventilation flow rate is far more complex. Indoor air quality in the occupied zone can be dependent of many factors such as outdoor air quality, airflow rate, indoor generation of pollutants, moisture content, thermal environment and how the air is supplied into the human occupied zone.

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  • Basics of CFD Modeling for Beginners - CFD Flow

    Computational fluid dynamics (CFD) is a technique of modeling and simulation based on numerical modeling for fluid flow. Using the CFD technique, heat and mass transfer, reactive flow, multi-phase flow and combustion can be analyzed using various numerical models.

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  • Numerical investigation of the breakup behavior of an ...

    2018-7-3 · To better understand and control breakup mechanisms of turbulent oscillating two-phase jets, numerical investigations are conducted for a jet with liquid Reynolds number Re l = 8701 and liquid Weber number We l = 4759. Simulations are performed using a volume of fluid method.

    Get Price
  • Passive heating and cooling

    Video 1: Numerical simulation of air flow inside air channel of a double skin façade Video 2: Growing process, colour and leave density changes of a green façade. The day of the year can be seen at the right hand side, where the four seasons are marked with different colours as a reference.

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  • Numerical investigation of aerosol transport in a ...

    2020-10-20 · Air conditioning of the classroom follows ASHRAE 62.1 ventilation standards for acceptable indoor air quality. 26 26. American Society of Heating, Refrigerating, and Air-Conditioning Engineers, in ASHRAE Standard 62.1-2007: Ventilation and acceptable indoor air quality (ASHRAE, Inc., Atlanta, GA, 2007).

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  • Numerical simulation and experimental study of

    For improving noises in the cabin quickly, large eddy simulation was adopted to compute the fluctuating pressure of the cabin surface numerically. Then, the fluctuating pressure was mapped to the boundary element model as the excitation loads to obtain the aerodynamic noise distribution of the cabin at different frequencies, which was then compared with the experimental result.

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  • Numerical study on aerodynamic characteristics of high ...

    Berlitz T., Matschke G. Interior air flow simulation in railway rolling stock. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, Vol. 216, Issue 4, 2002, p. 231-236. Zhang D. C., Weng P. F. Numerical simulation of airflow and temperature fields in railway occupied passenger car. Chinese Journal ...

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  • FLOW SIMULATION FOR DESIGN OF VENTILATION

    flow behaviour in the room with numerical and physical models. RESEARCH METHODS To design new ventilation systems the following investigation methods can be applied, to get a deeper insight into the mass transport phenomena within ventilated rooms of animal production: a) Numerical flow simulation The simulation technique (incompressible flow with

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  • (PDF) BEHAVIOUR AND SIMULATION OF A CAR MODEL

    The air velocity was 48.20m/s which is same as the wind tunnel test Next step is to generate the surface mesh and with the base size of .05 m, the surface mesh obtained is shown below From streamlines, it can be seen that the flow is pretty smooth and wake formation is minimum CONCLUSIONSThe final modification of the design as per the wind ...

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  • Simulation of Room Airflow Using Comsol Multiphysics ...

    Airflow in a room can be supplied both through natural mean and also by the helps of mechanical ventilation. Natural ventilation is more sustainable compared to mechanical system; however natural ventilation, it may not be sufficient to fulfil the need of ventilation for a specific room. This study presents simulation works carried out regarding to the airflow movement in a room due to ...

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  • Numerical Analysis of Airflow Fields from New Melt

    2020-5-28 · The melt-blowing process uses high-speed and high-temperature airflow from the die head to draw polymer melt into micron-sized fibers. In this work, to reduce the diameter of the melt-blowing fibers, three new slot dies have been designed based on the common slot die. With computational fluid dynamics technology, the two-dimensional flow fields from these new types of slot dies were ...

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  • Numerical investigation on the impact of different supply ...

    An increased focus on energy saving has led to a rapid development of energy-efficient buildings. In the residential buildings, space heating, ventilation and air conditioning (HVAC) have the highest energy use. The ventilation system is the main tool to provide acceptable indoor air quality and thermal comfort for occupants. This study presents an investigation of the thermal environment in a ...

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