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  • Air Flow Simulation - hwd3d.com

    2015-6-1 · The flow interactions are minimal in the centerline of the finned tube because there is low contact between air flow and finned tube. The turbulent kinetic energy tend to increase in the sides of the finned tube, approximately, at z L = 0.43, 85 mm, with reference to the first half of the tube ( Fig. 7 ) where turbulent kinetic energy is maximum.

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  • Simulation and Visualization of Air Flow Around Bat Wings ...

    2000-11-1 · As a consequence, it is particularly useful to predict the air flow distribution in a building by natural ventilation and to design the entire building layout in order to utilise the natural cooling resources. There are two popular methods to predict airflow fields; the first is the model experiment, and the second is the numerical simulation.

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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 3.8 Summary 58 Chapter 4 - The simulation of indoor air flow..... 61 4.1 Introduction 61

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  • A detailed simulation of air flow after sneezing

    A numerical simulation applying the computational fluid dynamics (CFD) solver Fluent 6.1.22 was performed displaying inspiratory intranasal air temperature and airflow patterns. Results: Due to resection of the turbinates the airflow pattern is disturbed resulting in a spacious vortex throughout the entire nasal cavity.

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  • CFD Modeling and Validation of Temperature and Flow ...

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

    2021-6-30 · In a coughing event that lasts for 0.4 seconds and has a maximum exhaled air speed of 4.8 m/s, the flow first generates a turbulent stream of air that is hotter and more humid than that of the environment. Once the expiration is over, the stream turns into a puff of air that rises because of flotation and its lack of weight while it dissipates.

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  • A Multi-Agent Simulation of Collaborative Air Traffic Flow ...

    2021-1-6 · The directions of the air flow in the nasal cavity and two-dimensional contours in sections 1–3 are shown in Figs. 5a, b and c. As expected, in the narrow channels of the nasal cavity the air flow accelerated and reached a maximum value of 3.33 m/s (Fig. 5a, b). It can be also noticed that due to the deep shells of the nasal cavity, vortices ...

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

    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 …

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