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首页> 外文期刊>Applied Mathematical Modelling >Transient Bernoulli flow in multi-port fluid devices with arbitrary geometry
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Transient Bernoulli flow in multi-port fluid devices with arbitrary geometry

机译：具有任意几何形状的多端口流体设备中的瞬态伯努利流动

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摘要

We present a method for the solution of transient flow in a multi-port fluid device with arbitrary geometry. The method is applicable to fluid devices where the fluid motion is primarily inviscid throughout the volume, but locally near a device port some accommodation to viscous flow is introduced. The internal flow is characterized by an array of purely geometrical factors between ports, essentially a set of generalized impedances; the state variables elicited are the average volume flow rates through the device ports. The method creates a set of coupled non-linear time-dependent ordinary differential equations. The solution to this set of equations is much faster, typically by orders of magnitude, than a single run of a transient CFD model. We demonstrate our method with a simple example; we show that the results of the method agree well with a full CFD calculation.
机译：我们提出了一种解决具有任意几何形状的多端口流体设备中瞬态流动的方法。该方法适用于流体设备，在该流体设备中，流体运动主要在整个体积中不可见，但是在设备端口附近局部引入了一些粘性流。内部流动的特征是端口之间存在一系列纯粹的几何因素，本质上是一组广义的阻抗。引起的状态变量是通过设备端口的平均体积流率。该方法创建了一组耦合的非线性时间相关的常微分方程。与瞬态CFD模型的单次运行相比，这组方程的解决方案要快得多，通常快几个数量级。我们用一个简单的例子演示我们的方法。我们表明，该方法的结果与完整的CFD计算非常吻合。

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