基于高阶守恒重映对窗口嵌入技术的改进  

Improvement on Window Embedment Technology with High Order Conservative Remapping

作　　者：张宇飞[1] 陈海昕[1] 符松[1] 

机构地区：[1]清华大学航天航空学院,北京100084

出　　处：《计算物理》2011年第2期167-173,共7页Chinese Journal of Computational Physics

基　　金：国家自然科学基金(10972120)资助项目

摘　　要：采用高阶守恒重映方法提高窗口嵌入技术中非点对点搭接网格界面的流场信息传递精度和分辨率,研究不同精度和模板选择方式下的重构对重映精度的影响.界面守恒变量的数据重构使用常数分布、线性分布和二次多项式分布.结果表明,基于WENO的线性重构在精度和计算量方面获得了较好的平衡.将改进的方法应用于机翼贴片修补问题的数值模拟,成功模拟出修补后翼面压力分布出现的明显跳跃.High-order conservative remapping method is developed to improve flow information exchange accuracy of window embedment technology on non-matched grid-block interface with preservation of conservative property and robustness.Remapping methods with various order of accuracy combined with various stencil selection strategy are compared.Constant distribution,linear and quadratic polynomial distributions are tested for reconstruction of conservative variables on interface.Accuracy and efficiency of linear polynomial WENO remapping are balanced well for engineering application.Numerical study of DLR-F4 wing-body configuration with a mending plate patched on the wing is conducted by a in-house developed code NSAWET.A sharp pressure jump brought by the mending plate is predicted.

关 键 词：高阶守恒重映 窗口嵌入技术 机翼贴片修补 

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]