高阶精度格式WCNS-E-5在亚跨声速流动中的应用研究  

Investigation of high-order accurate scheme WCNS-E-5 applied to subsonic and transonic flows

作　　者：刘昕[1] 邓小刚[1] 毛枚良[1] 

机构地区：[1]中国空气动力研究与发展中心,四川绵阳621000

出　　处：《空气动力学学报》2005年第4期425-430,共6页Acta Aerodynamica Sinica

基　　金：国家杰出青年科学资助基金(10225208);创新研究群体科学资助基金(10321002)

摘　　要：采用高阶精度非线性紧致加权格式WCNS-E-5和Baldwin-Lomax模型,求解雷诺平均Navier-Stokes方程,开展了典型翼型与机翼的湍流流动数值模拟研究。对方程中粘性项采用的四阶精度差分近似以及网格导数求解与边界格式的四阶精度,保证了高精度算法的实现。计算结果表明:本文算法能够准确地模拟这些翼型与机翼的亚跨声速流场,得到与实验测量十分吻合的壁面压力分布,计算结果对网格的依赖性小。In this paper, the high-order accurate nonlinear compact weighted scheme called WCNS-E-5 with algebraic turbulent model Baldwin-Lomax is used to solve the Reynolds-average Navier-Stokes equations, and some typical turbulent flows past aerofoil and wing are numerically simulated. In addition to the high-order accuracy of discretization of inviscid term, fourth-order approximations for the viscous term, boundary scheme and grid deriviations are also concerned. The numerical solutions show that the algorithm utilized here simulate the subsonic and transonic turbulent flows accurately, and the computational results are well conformed to experimental data. Furthermore the dependent ability of WCNS-E-5 on the grids is quite little.

关 键 词：非线性紧致格式 NAVIER-STOKES方程 加权技术 Baldwin-Lomax模型 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]