基于流体体积法的溢流堰粘性流场数值模拟

为了对溢流堰的流场进行数值模拟,从完整的N-S方程出发,采用k-ε两方程湍流模型封闭Reynolds方程,作为基本控制方程,对自由表面的追踪采用了VOF（volume of fluid）方法.数值计算中,对基本控制方程采用了基于交错网格的SIMPLE算法,对自由表面控制方程采用了施主-受主方法.计算了溢流堰上的流速和压力分布,并与已有的试验结果作了比较.结果表明,计算方法能够比较准确地模拟溢流堰的流场.

Numerical simulation of viscous flow field over overflow weir with volume of fluid method

A numerical technique for simulat ing water f low ov er a weir based o n the viscous theory w as pr esented. The numer ical model involv ed the tw o-equatio n k-Etur bulent model and Reynolds equation. In order to t rack the fr ee surface, the volume of fluid ( V OF) method w as employed. The SIMPLE metho d w as used to solve the cont rol model , and the donor-acceptor metho d to solve the f ree surface model. T he fr ee surface prof ile and the velocity filed, st reamline, pressur e on the w eir w ere obtained and the computatio nal results show ed g eneral ag reement w ith the ex ist ing data.