多孔介质通道内单相流阻力特性数值研究

Numerical Study on Resistance Characteristics of Single-Phase Flow through Porous Media

采用Brinkman-Darcy-Forchheimer模型对各向同性、饱和均匀多孔介质通道内单相流体的绝热流动阻力进行了数值模拟。结果表明:在多孔介质中,对于单相流体压降,现有模型可以较好地进行预测。其中损失系数Kloss对流动阻力影响很大;高雷诺数(Re)下需考虑Re对Kloss的影响;随着无量纲直径D的增大,流动阻力减小。

This paper studied the resistance characteristics of single-phase flow through porous media in numerical way. The flow field is modeled by the Brinkman-Darcy-Forchheimer model. The results obtained from this model agree well with the experiment results. The resistance loss coefficient Kloss of the model has been discussed. It is founded that Kloss dominated the resistance and the influence of Reynolds number on Kloss should be taken into account when Reynolds number at the high values. Numerical results also show that the resistance decreased with the increasing of dimengianless diameter D.