水电站尾水管出口流动特性数值模拟

Numerical Simulation of Turbulent Characteristics in A Hydraulic Turbine Draft Tube

本文应用三维有限体积法和SIMPE—C算法,对古田溪水电厂尾水管和下游尾水洞进行了数值模拟。应用固液两相流理论,推导了具有不规则边界时的控制方程。在规划的矩形网格中,采用通度系数法处理计算区域的不规则边界问题。计算结果给出了尾水管出口处的流动规律,为古田溪电厂的现场实验提供了依据。

In this paper, three dimensional FVM and SIMPLE- C procedure are used to calculated turbulence characteristics in a hydraulic turbine draft tube. The governing equations of turbulent over irregular boundary are developed by analyzing the solid-liquid two-phase flow model, and the partial cell parameter is introduced to treat irregular boundaries. The computational result give proof for testing ground.