水轮机转轮内部的三维固液两相紊流计算

1引言本文利用两相流动的多流体模型和k－。－A。两相索流模型计算水轮机转轮内部的三维固液两相紊流。在索流两相流动的多流体即多连续介质模型中，离散相看成是Euler坐标中处理的拟流体。与小滑移和无泪移模型不同的是，多流体模型可以分别考虑大滑移和离散颗粒扩散，其间无直接联系，并且能够充分考虑离散相质量、动量及能量的湍流扩散山本文利用速度压力校正法之一：SIMPLEC法进行数值计算。该法最早使用在S．VPatankar和D．B．Snalding在1972年提出的SIMPLE算法中间，本文将其推广到具有交错网格的非正交贴体坐标系中计算三维…

THREE-DIMENSIONAL PARTICLE-LIQUID TWO-PHASE TURBULENT FLOW CALCULATION THROUGH A HYDRAULIC TURBINE RUNNER

In the presellt work, The three-dimensional turbulent particulate-liquid two-phase flows have been simulated through a hydraulic nancis turbine runner by using the turbulence model and the SIMPLEC algorithm on the bases of the theory of two-fluids model for multiphase flows. In this theory, the particle phase at dilute conceniration conditions, is assumed to be a pseudo-fluid and occupies a certain fraction volume in the whole flow domain shared with the colltinuum phase, i.e., the real fluid phase. Velocity distributions of the two phases through the runner are indicated in this paper as calculated results.