三相泡沫在采空区中渗流特性的数值模拟

Numerical Simulation of the Seepage Characteristics of Three-Phase Foam in the Gob

为研究三相泡沫在采空区中的渗流特性，运用计算流体力学软件对三相泡沫在多孔介质中渗流的各种参数进行了数值模拟．结果表明三相泡沫以入口速度为5m／s在采空区中做渗流流动时，散热带渗流速度分布在0～2．1mm／s区间内，氧化升温带渗流速度分布在0～0．09mm／s区间内，窒息带速度分布在0～7．2μm／s区间内．证明了三相泡沫在采空区运移过程中，具有很强的堆积和扩散特性．根据模拟结果运用3Dmax的动画功能对三相泡沫在采空区中的渗流特性进行了仿真演示．

Various parameters controlling three-phase foam seepage in a porous medium were simulated by computational fluid dynamics. The intent was to understand the three-phase foam seepage in the gob. The seepage velocities in the radiation zone, oxidative heating zone and asphyxia zone are 0-2.1 mm/s, 0-0.09 mm/s and 0-7.2 mm/s, respectively, when the inlet velocity is 5 m/s. A three-phase foam was proved to have accumulative and diffuse characteristics. 3D Max was used to simulate the seepage of three-phase foam in the gob, based on the results of the numerical simulations.