二维不规则域内紊流有限体积解

本文针对M.Faghri等计算某一类二维不规则域内层流方法在工程中应用范围窄的特点,结合本文推出的物面正交曲线座标系中的控制方程,用代数变换法发展了一个二维不规则域内紊流的计算方法。它既达到了适用范围广,同时又避免了数值求解偏微分方程生成适体坐标的目的。采用紊流K-ε两方程模型并用有限体积法进行方程离散化。文中最后通过若干算例对该方法进行说明。计算与实验结果比较表明,二者吻合较好。

FINITE VOLUME SOLUTION OF THE TURBULENT FLOW IN TWO-DIMENSIONAL IRREGULAR DOMAIN

Since the application scope of the methodology developed by M.Faghri et al isn't wide enough for engineering problems, a numerical procedure using the al- gebraic transformation, combined with the governing equations derived in orthogo- nal coordinate system, is presented. With this mathod, not only the numerical solution of Laplace equation avoided, but also enlarged the application scope enlarged. The thrulent K--(?) two-equation model is adopted and all governing equa- tions are discratized by finite volume method. The numerical procedure is illustra- ted with example problems. Comparisons between numerical results and experi- mental data are satisfactory.