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  • A numerical simulation of air flow in the human ...

    2021-1-6 · simulation using computational fluid dynamics (CFD) as an alternative approach to studying airflow in human re-spiratory systems. Compared to natural measurements, CFD modeling is advantageous for a detailed study of air flow in the nasal cavity model. However, an accurate air-flow forecast requires careful selection of CFD models and rigorous ...

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  • CiteSeerX — Numerical Simulation of Air Flow and Medical ...

    CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The use of a hood to administer therapeutic aerosols to wheezy infants has many advantages and was found as efficient as administration using a mask. The aim of the present study is to investigate numerically the airflow induced drug dispersion inside the hood. Drug droplet dispersion is examined with respect to three ...

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  • Numerical Simulation of Flow Field of Air-Jet in Quenching ...

    The type of atomize-cool and air-cool are widely used in the world now. Air-jet is a very vital instrument in quenching by air-cooling. t is necessary to simulate the inner and outer flow-field of air-jet. By means of computational fluid dynamics soft system Fluent, numerical simulation of quenching air cooling process of air …

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  • Numerical Simulation of the Air Flow Around the Arrays of ...

    Метаподаци. This paper deals with the numerical simulation of air flow around the arrays of flat plate collectors and determination of the flow field, which should provide a basis for estimating a convective heat losses, a parameter which influences their working characteristics. Heat losses are the result of the reflection on the ...

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  • Three-Dimensions Numerical Simulation of Flow and

    【Abstract】 The method of numerical simulation and FLUENT software were combined to implement the threedimensional numerical simulation of the heat pipe air preheater.The fluid flow and thermal performance of the heat pipe air pre-heater in the furnace surplus heat recovery system were studied.According to the structure and heat transfer characteristic of the heat pipe air pre-heater,the ...

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  • Simulation and Visualization of Air Flow Around Bat

    2003-7-25 · Simulation and Visualization of Air Flow Around Bat Wings During Flight R. Weinstein, I. Pivkin, S. Swartz, D. Laidlaw, G. Karniadakis, K. Breuer Brown University, Providence, RI August 16, 2002 Problem We present a method for simulating and visualizing air flow around a static bat (order Chiroptera) wing geom-etry.

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  • Simulation and Visualization of Air Flow Around Bat

    2005-6-27 · Simulation and Visualization of Air Flow Around Bat Wings During Flight 691 where = ∑P= φ 0 t 1 u t( ) is a mean (time-averaged) position of the markers and φk are the orthonormal spatial modes. The unknown functions

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  • A Computational Fluid Dynamics Simulation of Oil–Air

    2016-9-8 · A volume of fluid (VOF) computational fluid dynamics (CFD) approach is applied. A sector of a ball bearing is modeled with a fine mesh, and the detailed simulations show the flow behavior for different oil splits to the three feed locations of the bearing, thus providing information useful to understanding oil shedding into the bearing chambers.

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  • CFD Simulation of Airflow Inside Oil Tank

    2021-1-5 · Client: Cement Manufacturer in India The Objective: To study the air flow inside oil tanks provided to scavenge the fuel vapors through the outlet. Challenges: Identifying and developing simulation domain from the CAD model; Application of …

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  • Macroscopic Model and Simulation Analysis of Air Traffic ...

    We focus on the spatiotemporal characteristics and their evolvement law of the air traffic flow in airport terminal area to provide scientific basis for optimizing flight control processes and alleviating severe air traffic conditions. Methods in this work combine mathematical derivation and simulation …

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  • Numerical Simulation of the Air Flow and Thermal

    2016-4-1 · Numerical Simulation of the Air Flow and Thermal Comfort in Aircraft Cabins . Mikhail Konstantinov, Waldemar Lautenschlager, Andrei Shishkin, Claus Wagner . German Aerospace Center, Institute of Aerodynamics and Flow Technology, SCART, Bunsenstraße 10, 37073 Göttingen, Germany . [email protected] . Abstract.

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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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  • Developing efficient tools to evaluate indoor environment ...

    2006-9-29 · 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 …

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  • 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.

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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 ...

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  • 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 …

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  • Tridimensional simulation of the speed, pressure and ...

    The Geometry went through a numerical simulation process using the CFX 5,7. The obtained results showed the behavior of the air flow through the test chamber, and also it showed the variations of speed and pressure at the exit of the chamber and the calculations of the coefficient and the dragging force on the geometry of the freight truck.

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  • Air-Flow Simulation of a Savonius Rotor

    2014-2-6 · Air-Flow Simulation of a Savonius Rotor. Submitted by Dorfner_C on February 6, 2014 - 09:48 . Problems; Hello everybody, I have designed a Savonius Vertical Axis Wind Turbine on a CAD programm. Now I want to test it on CAEDIUM to simulate the airflow, the pressure, the forces and the moments. I have defined an flow-volume and a inlet/outlet ...

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  • Simulation and Measurement of Road Tunnel Ventilation

    2015-3-30 · 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.

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

    2021-8-22 · 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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  • Modelling & Simulation of Flow through Air Flow Bench ...

    MODELLING AND SIMULATION OF FLOW THROUGH FLOWBENCH USING SOLIDWORKS Objective To Create a 3D Model of flowbench simulate flow analysis (CFD Analysis) and obtain a plot of Lift vs Mass Flow rate. Theory Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical analysis and data…

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  • A Computational Fluid Dynamics Simulation of Oil–Air

    2016-9-8 · A volume of fluid (VOF) computational fluid dynamics (CFD) approach is applied. A sector of a ball bearing is modeled with a fine mesh, and the detailed simulations show the flow behavior for different oil splits to the three feed locations of the bearing, thus providing information useful to understanding oil shedding into the bearing chambers.

    Get Price
  • NUMERICAL SIMULATION OF AIR-LIFT PUMP

    2016-6-23 · This is to certify that the thesis entitled “ Numerical Simulation of Air-lift Pump”, submitted by Vivek Manna (Roll Number: 111ME0310) to National Institute of Technology, Rourkela, is a ... 2.1.1 Effect of Air Mass Flow Rate on the Flow Regime 9 2.1.1.1 Air Inlet Mass Flow Rate = 0.0033 kg/sec. 9 2.1.1.2 Air Inlet Mass Flow Rate = 0.0110 ...

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  • 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.

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  • FlowXpress Water and Air Flow for Free! - Computer Aided ...

    2016-6-30 · SOLIDWORKS offers a wide range of Xpress tools for everyone to use. FlowXpress is one of the SimulationXpress offerings. FlowXpress is a unique tool for internal flow analysis. FlowXpress allows for the two most common media, air and …

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  • THE ADAPTIVE COUPLING OF HEAT AND AIR FLOW

    2007-8-14 · AIR FLOW MODELLING WITHIN DYNAMIC WHOLE-BUILDING SIMULATION Ian Beausoleil-Morrison, B.A.Sc., M.A.Sc. A thesis submitted for the Degree of Doctor of Philosophy Energy Systems Research Unit Department of Mechanical Engineering …

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  • Direct numerical simulation of low Reynolds number

    【摘要】:With performance improvement of low-temperature fuel cell(FC), high reactant supply and water generation rates may induce air-water turbulence in the FC flow channel. In this research, an air-water turbulent direct numerical simulation(DNS) model is developed to simulate different droplet sizes,locations and interactions in the air-water transport processes comprehensively.

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  • Modeling and simulation of pore-scale multiphase fluid ...

    2018-7-4 · phase flow simulations for three fundamental reasons: (1) a fast, robust, and accurate way must be found to track the complex dynamics of fluid-fluid interfaces (or less efficient methods that do not require interface tracking must be employed); (2) the behavior of multiphase fluids with large

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  • SIMULATION OF AIR LIQUEFACTION USING ASPEN PLUS

    2012-5-11 · 4.1 simulation of air liquefaction and separation 19 4.2 effect of change in various process conditions 22 4.2.1 variation of liquid fraction with pressure of compression 22 4.2.2 variation of liquid fraction with molar flow rate 23

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  • Numerical simulation of air flow over a passenger car

    Numerical simulation of air flow over a passenger car and the influence of rear spoiler using CFD International Journal of Advanced Transport Phenomena Vol. 01, No. 01, December 2012, pp 6-13

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  • NUMERICAL SIMULATION OF AN AIR-SUPPORTED

    2020-4-28 · 2020-4-28 · simulation of aeroelastic behavior of air-supported structure in the air flow. Results of fully coupled FSI numerical simulations can be used for improvement for design and load-analysis standards addressed to the air-supported structures. For the treatment of nonlinear multi-physics problems, two general approaches can be identified3:

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

    2014-6-29 · 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 …

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  • (PDF) Energy modeling and air flow simulation of an ...

    Energy modeling and air flow simulation of an ancient wind catcher in Yazd December 2015 Conference: 3rd.International congress on civil Engineering , Architecture and Urban Development

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  • CFD Simulation of Air-water Film Flow for Reactor Vessel ...

    2021-5-3 · 2021-5-3 · 3.1. No air flow conditions In the case of no air flow, transient simulation with time step of 0.2 ms was conducted as shown in Fig. 2. The film interface was expressed by iso-surface of void fraction at 0.5. In the simulation, the injected water from DVI nozzle impinges on the wall and spreads in the form of the liquid film. Fig. 2.

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  • (PDF) CFD simulation study of air flow around the airfoil ...

    The article presents a simulation study of air flow around the airfoil equipped with an additional rotary element, using the Magnus effect to change the air flow around it. For this purpose, a two ...

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  • CFD simulation of air flow after sneezing

    2021-7-5 · 2021-7-5 · CFD simulation of air flow after sneezing. özgün. 5th July 2021. By the beginning of April 2021, the number of people infected during the COVID-19 pandemic had risen to more than 130 million people of whom more than 2.8 million died. The SARS-CoV-2 virus responsible for COVID-19 is transmitted particularly by droplets or aerosols emitted when ...

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  • Simulation Analysis of Air Flow and Turbulence Statistics ...

    2014-6-25 · 2014-6-25 · The implementation of variable artificial roughness patterns on a surface is an effective technique to enhance the rate of heat transfer to fluid flow in the ducts of solar air heaters. Different geometries of roughness elements investigated have demonstrated the pivotal role that vortices and associated turbulence have on the heat transfer characteristics of solar air heater ducts by ...

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  • The Measurement and Simulation of Indoor Air Flow

    3.2 Air flow parameters 30 3.3 Turbulence and statistics 32 3.4 Indoor air flow measurements 34 3.5 Principles of velocimetry 36 3.6 Hot sphere anemometer 39 3.7 Particle Tracking Velocimetry (PTV) 51

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  • [PDF] Simulation analysis on inner flow field and ...

    This paper conducted a parametric modeling for air knife structure in a printing factory, used HYPERMESH software to divide the meshes of air model and combined with actual conditions to define various boundary conditions in the inner flow field of air knife. Meanwhile, this paper adopted fluid dynamics software Fluent to conduct numerical simulation for the internal airflow of air knife ...

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  • 15-19: Simulation of Air Flow Distribution and Performance ...

    A program code developed for prediction of performance of NDCT based on manufacturer's performance curve. Development of a simulation code using CFD for detailed zone wise analysis of air flow and performance of cooling tower is carried out which is the limitation of program code. Development of drift measurement device which is very useful for measurement of drift as well as DBT and WBT of ...

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  • Design and simulation of air flow inside double wall ...

    2013-10-25 · Abstract: This paper presents a concept of the design and development of an infant incubator by increasing a number of an air flow slot for air-inlet and air-outlet inside a double wall infant incubator. The number of airflow inlet slot is increase to 2 while an airflow outlet slot is to 4 at the lateral side. The study is done by using FEM simulation to compare between single air flow slot ...

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  • Solved: Air flow simulation - Autodesk Community

    2016-10-10 · Air flow simulation Hello all, I am in the midst of designing an air intake in Fusion 360 and was hoping I could do a air flow simulation on it. Hoping to see where I have gone wrong and help improve my part. Any help would be great thank you. Solved! Go to Solution. Solved by ...

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  • Numerical Simulation of Air–Water Two-Phase Flow on ...

    The pressure on the vertical step faces was compared with laboratory data. In addition, the air–water two-phase flow characteristics and prototype step failure of the simulated prototype spillway were analyzed based on the numerical results of velocity, pressure, and air concentration. Moreover, an optimized bottom-aeration was further studied.

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  • Modeling and simulation of pore-scale multiphase fluid ...

    2018-7-4 · MODELING AND SIMULATION OF PORE-SCALE MULTIPHASE FLUID FLOW AND REACTIVE TRANSPORT IN FRACTURED AND POROUS MEDIA Paul Meakin1,2,3 and Alexandre M. Tartakovsky4 Received 8 February 2008; accepted 18 December 2008; published 14 July 2009.

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  • Computer simulation of air and methane T flow following

    2015-5-4 · simulation applied to the behaviour of systems such as a mine ventilation system, which is made up of headings (branches), nodes and ventilation equipment. Having a model of the Computer simulation of air and methane flow following an outburst in transport gallery D-6, bed 409/4 by W. Dziurzyn′ski*, J. Krawczyk*, and T. Pałka* Synopsis

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  • Large-eddy simulation of air flow around a wall-mounted ...

    2009-11-2 · This paper models the air flow around a wall-mounted tripod platform that mimics a meteorological tripod tower placed in shallow water for air–sea interaction measurements to study the flow distortion by the tower. We adopt large-eddy simulation …

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  • Module Development and Simulation of the Variable ...

    2021-5-31 · efficiency by simulation is becoming concerns for professionals in this field[5-10]. This paper addresses the simulation of a variable refrigerant flow air-conditioning (VRF) system, which is earning popularity in commercial buildings such as small offices, shopping centers, hotels, and domestic occasions in China.

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