多孔介质通道内单相流阻力特性数值研究

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基金项目:

四川省青年科技基金资助项目（08ZQ026-052）

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

National Key Laboratory of Bubble Physics and Natural Circulation in Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 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K_loss对流动阻力影响很大;高雷诺数(Re)下需考虑Re对K_loss的影响;随着无量纲直径D的增大,流动阻力减小。
- 多孔介质 /
- 单相流 /
- 流动阻力 /
- 数值模拟
Abstract: 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 K_loss of the model has been discussed. It is founded that K_loss dominated the resistance and the influence of Reynolds number on K_loss should be taken into account when Reynolds number at the high values.Numerical results also show that the resistance decreased with the increasing of dimensionless diameter D.
- Porous media /
- Single-phase flow /
- Resistance characteristics /
- Numerical study