摘要
讨论了积冰气象条件下翼型积冰过程的非结构动态网格数值模拟方法。外部无黏绕流流场采用基于非结构网格的分布式并行计算技术,空间离散采用VanLeer迎风有限体积格式,时间推进为5步显式龙格-库塔方法。采用四阶龙格-库塔方法求解过冷水滴运动轨迹方程,使用了一种合理、简单的物面水积冰量计算方法,提高了计算效率。使用非结构动态网格技术对积冰后的翼型网格进行快速调整。在对NACA0012翼型积冰形状进行校核验证后,对某型飞机在积冰气象条件下飞行时翼型积冰过程进行了数值模拟,得到了与参考文献结果相符的冰形特性。
A numerical method for simulating the ice accretion process on airfoil is presented.The inviscid outer flow around the airfoil is solved using a finite volume upwind splitting VanLeer scheme on unstructured grids with distributed parallel computation,and the time integration is a 5-stage Runge-Kutta method.Then it is coupled with the icing model,with a fourth-order Runge-Kutta scheme for the description of the trajectories of super-cold droplets.A simple method is introduced to calculate the icing quantity on the body surface. And the dynamic mesh technique is implemented to adjust the grids for the iced airfoil. This method can describe the icing process almost without any artificial control parameters. After the validation and verification of the numerical method by the ice accretion problem of the NACA0012 airfoil, it is used to simulate the airfoil ice shape of an airplane under icing weather conditions. The numerical results are obtained and compared well with the liraited references.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2009年第12期2269-2274,共6页
Acta Aeronautica et Astronautica Sinica
关键词
积冰
非结构网格
迎风格式
动态网格
数值模拟
ice accretion
unstructured mesh
upwind scheme
dynamic grid
numerical simulation
作者简介
通讯作者：王江峰（1970-）男，博士，教授。主要研究方向：计算流体力学，优化算法与并行计算。Tel：02584891231 E-mail：wangjf@nuaa．edu．cn
夏健（1970-）男，博士，教授。主要研究方向：计算流体力学，多体分离与级间分离流场数值模拟。Tel：02584891023 E-mail：jxia@nuaa．edu．cn
田书玲（1978-）男，博士，讲师。主要研究方向：计算流体力学，混合网格生成，喷流流场数值模拟。Tel：025-84892735 E—mail：shulingtian@nuaa．edu．cn
