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首页> 外文期刊>Acta Horticulturae >Numerical simulations of turbulent flow through screen mesh by transient SST and k - epsilon turbulent models.
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Numerical simulations of turbulent flow through screen mesh by transient SST and k - epsilon turbulent models.

机译：利用瞬态SST和 k -ε湍流模型对流经筛孔的湍流进行数值模拟。

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摘要

A 3-D numerical model of the turbulent incompressible flow through screens was developed. Numerical modeling of the screen with a transient SST k- omega model enabled us to draw some conclusions that we used in the numerical model of the screen and in applying a k- epsilon turbulent model to examine the interactions of external, internal and screen flows. Simulation results (pressure drop across screen, 3D-forces, production of the turbulent kinetic energy and turbulent viscosity) are incorporated into the numerical model, which is capable of modeling a screen as a virtual. Reduction of velocity components and flow turning were simulated by inputting a force into the momentum equation. The effects of turbulence were reproduced by fixing production of the turbulent kinetic energy and turbulent viscosity at the virtual screen. The numerical results yielded by simulation of the screen as a virtual screen agreed well with those of a full numerical model of the screen.
机译：建立了湍流不可压缩流动通过滤网的3-D数值模型。使用瞬态SST k -Ω模型对屏幕进行数值建模，使我们能够得出一些结论，这些结论可用于屏幕的数值模型和应用 k -epsilon湍流模型来检查外部，内部和筛分流之间的相互作用。将模拟结果（跨屏幕的压降，3D力，湍动能的产生和湍流的粘度）合并到数值模型中，该数值模型能够将屏幕虚拟化。通过将力输入动量方程来模拟速度分量的减小和流动转向。通过在虚拟屏幕上固定产生湍动能和湍流粘度来再现湍流的影响。通过将屏幕模拟为虚拟屏幕而产生的数值结果与屏幕的完整数值模型的数值结果非常吻合。

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