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  • Detailed simulation of air flow after coughing and ...

    Using high-performance computation systems, a URV research team has simulated the flow of air produced by coughing and sneezing in unprecedented detail. The results give greater insight into the characteristics of the flow produced by breathing and the capacity of infectious aerosols to disperse in the environment and remain suspended, which spreads COVID-19 and other airborne diseases

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  • Numerical simulation on the behavior of a liquid jet into ...

    A numerical simulation has been performed to clarify the effects of turbulence in a liquid on the deformation of the liquid jet surface into an air flow. The turbulences in the liquid jet were simulated by the Rankin vortices, and the liquid jet surface was tracked numerically by the volume of fluid method.

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  • Numerical Simulation of Air Flow inside Acoustic Cyclone ...

    ABSTRACTThis paper presents a novel concept of cyclone separator, where sound waves are used to agglomerate fine particles. Sound waves generated by Hartmann acoustic generator are introduced into the secondary (core) air flow of cyclone separator. Results of numerical simulation of air flows inside conventional and acoustic cyclone separators are presented.

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

    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 …

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  • Developing efficient tools to evaluate indoor environment ...

    of air velocity, temperature and at a later stage pollutants concentration that describe the flow field characteristics and the contaminant level in the test room considered. Detailed measurements of indoor air flow are difficult to accomplish because similar to numerical simulations behavior at the boundaries

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  • Steady-state simulation of air flow inside a 2D channel ...

    A 2-dimensional simulation of airflow inside a channel of width 0.01m and length 0.1m is to be done using adptive time-step control in Converge CFD. The channel is subjected to an inlet total pressure of 100001 Pa and an outlet static pressure of 100000 Pa.

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  • [PDF] NUMERICAL SIMULATION OF SLUG FLOW REGIME FOR AN AIR ...

    Fluid mechanics of air-water slug flows in horizontal circular pipes is investigated using detailed, transient, 3-dimensional Computational Fluid Dynamics (CFD) simulations. The inhomogeneous twophase or mixture model combined with the interface sharpening (free surface) algorithm, implemented in the commercial CFD code CFX-5.7, has been used to predict the transition of a segregated air-water ...

    Get Price
  • Numerical simulation of an air-supported structure in the ...

    Numerical simulation of the tunnel test of large-scale air-supported model has been carried out as an example of using this technique. Wind tunnel study is described in the papers1, 2. Experimental deformed shape, pressure coefficients and aerodynamic forces were compared with the results of presented numerical simulation.

    Get Price
  • IOP Conference Series: Earth and Environmental Science ...

    Simulation of air velocity in a vertical perforated air distributor T N W Ngu1,, C M Chu1* and J A Janaun1. Chemical Engineering Programme, Faculty of Engineering, Universiti Malaysia Sabah (UMS), 88400, Sabah, Malaysia . E-mail: [email protected] . Abstract. Perforated pipes are utilized to divide a fluid flow into several smaller streams.

    Get Price
  • Simulation and Measurement of Road Tunnel Ventilation

    Air flow rates have been measured in part of the 'Soderledstunneln, • a much-used road tunnel in central Stockholm. The measurements were made with tracer gas technique, which made it possible to measure without disturbing the traffic flow through the tunnel. The measurements hauc been compared to simulations ofthe air flow.

    Get Price
  • Detailed simulation of air flow after coughing and ...

    Using high-performance computation systems, a URV research team has simulated the flow of air produced by coughing and sneezing in unprecedented detail. The results give greater insight into the characteristics of the flow produced by breathing and the capacity of infectious aerosols to disperse in the environment and remain suspended, which spreads COVID-19 and other airborne diseases

    Get Price
  • Numerical simulation on the behavior of a liquid jet into ...

    A numerical simulation has been performed to clarify the effects of turbulence in a liquid on the deformation of the liquid jet surface into an air flow. The turbulences in the liquid jet were simulated by the Rankin vortices, and the liquid jet surface was tracked numerically by the volume of fluid method.

    Get Price
  • Numerical Simulation of Air Flow inside Acoustic Cyclone ...

    ABSTRACTThis paper presents a novel concept of cyclone separator, where sound waves are used to agglomerate fine particles. Sound waves generated by Hartmann acoustic generator are introduced into the secondary (core) air flow of cyclone separator. Results of numerical simulation of air flows inside conventional and acoustic cyclone separators are presented.

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

    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.

    Get Price
  • Developing efficient tools to evaluate indoor environment ...

    of air velocity, temperature and at a later stage pollutants concentration that describe the flow field characteristics and the contaminant level in the test room considered. Detailed measurements of indoor air flow are difficult to accomplish because similar to numerical simulations behavior at the boundaries

    Get Price
  • Steady-state simulation of air flow inside a 2D channel ...

    A 2-dimensional simulation of airflow inside a channel of width 0.01m and length 0.1m is to be done using adptive time-step control in Converge CFD. The channel is subjected to an inlet total pressure of 100001 Pa and an outlet static pressure of 100000 Pa.

    Get Price
  • [PDF] NUMERICAL SIMULATION OF SLUG FLOW REGIME FOR AN AIR ...

    Fluid mechanics of air-water slug flows in horizontal circular pipes is investigated using detailed, transient, 3-dimensional Computational Fluid Dynamics (CFD) simulations. The inhomogeneous twophase or mixture model combined with the interface sharpening (free surface) algorithm, implemented in the commercial CFD code CFX-5.7, has been used to predict the transition of a segregated air-water ...

    Get Price
  • Numerical simulation of an air-supported structure in the ...

    Numerical simulation of the tunnel test of large-scale air-supported model has been carried out as an example of using this technique. Wind tunnel study is described in the papers1, 2. Experimental deformed shape, pressure coefficients and aerodynamic forces were compared with the results of presented numerical simulation.

    Get Price
  • IOP Conference Series: Earth and Environmental Science ...

    Simulation of air velocity in a vertical perforated air distributor T N W Ngu1,, C M Chu1* and J A Janaun1. Chemical Engineering Programme, Faculty of Engineering, Universiti Malaysia Sabah (UMS), 88400, Sabah, Malaysia . E-mail: [email protected] . Abstract. Perforated pipes are utilized to divide a fluid flow into several smaller streams.

    Get Price
  • Simulation and Measurement of Road Tunnel Ventilation

    Air flow rates have been measured in part of the 'Soderledstunneln, • a much-used road tunnel in central Stockholm. The measurements were made with tracer gas technique, which made it possible to measure without disturbing the traffic flow through the tunnel. The measurements hauc been compared to simulations ofthe air flow.

    Get Price