随机多孔介质内流体流动传热特性研究

Study on Flow and Heat Transfer Characteristics of Fluid in Random Porous Media

多孔介质内部复杂的孔隙结构导致多孔介质内流体流动的随机性。本文通过数值实验的方法对随机多孔介质内流体流动传热特性进行了研究,结果表明:随着压差的增大,多孔介质内部流体流速呈线性单增的关系;随着孔隙率的增加,温度整体分布呈现出不均匀性的特点,其内部页岩气的平均流动速度加快,平均温度逐渐增加。研究结果对多孔介质内部流体流动特性的认识具有一定的借鉴意义。

The complex pore structure in porous media leads to the randomness of fluid flow in porous media.Numerical experiments were used to study the heat transfer characteristics of fluid flow in random porous media.The results showed that:as the pressure difference increases,the fluid flow rate inside the porous media increased linearly,as the porosity increases,the overall temperature distribution presented the characteristics of inhomogeneity,the average flow rate of shale gas inside the gas increased,and the average temperature gradually increased.The research results had certain reference significance for the understanding of fluid flow characteristics in porous media.