五阶HWCNS在低速复杂流场中的应用  

Application of fifth-order accurate HWCNS for low-speed complex flow field

作　　者：周云龙[1] 刘伟[1] 董义道 王光学[1,2] 邓小刚[1] 

机构地区：[1]国防科技大学航天科学与工程学院,湖南长沙410073 [2]中山大学物理学院,广东广州510006

出　　处：《国防科技大学学报》2016年第4期1-7,共7页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(11172325;90716015)

摘　　要：采用五阶精度显式混合加权紧致非线性格式求解雷诺平均NS方程;利用多块对接结构网格技术,对30P-30N多段翼型进行网格收敛性研究。在不考虑转捩的情况下,采用SA一方程湍流模型研究混合加权紧致非线性格式与二阶精度MUSCL格式对该翼型压力分布和典型站位速度型的影响,并与实验结果进行对比分析。采用混合加权紧致非线性格式和SA一方程湍流模型模拟梯形翼高升力构型低速复杂流场,通过对总体气动特性和压力分布的分析,探讨五阶精度显式混合加权紧致非线性格式在低速复杂外形流动中的应用能力。结果表明,对30P-30N三段翼型,采用全湍流模拟方法可以得到较好的压力分布;对梯形翼高升力构型,在附着流和边界层小分离情况下混合加权紧致非线性格式有较好的模拟能力。The fifth-order accurate explicit HWCNS （hybrid cell-edge and cell-node weighted compact nonlinear schemes） was used to solve Reynolds averaged Navier-Stokes equations. The grid convergence study of 30P - 30N was performed by generating multi-block structured grids. The effects of HWCNS and the second-order accurate MUSCL on pressure distribution and velocity profiles at typical stations were studied using SA turbulence model without regarding transition, furthermore the numerical and experimental results were compared and analyzed. The trapezoidal wing was numerically simulated using HWCNS and SA turbulence model, and the application performance of HWCNS for low-speed complex configuration flows was discussed by analyzing the aerodynamic characters and the pressure distribution. Simulation results indicate that the pressure distribution of 30P - 30N is simulated with the fully turbulent model accurately; as for the trapezoidal wing, HWCNS shows good simulation performance when dealing with the attached flow and small flow separation.

关 键 词：高精度格式 混合加权紧致非线性格式 NAVIER-STOKES方程 低速流动 湍流模型 

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]