摘要
提出基于非结构网格流场计算时的网格重排序,优化了网格信息在内存中的存贮位置,使得计算过程中调用数据的处理速度加快,有效提高了计算效率。以M6机翼及DLR-F4翼身组合体的跨音速无粘流场为算例,分别通过显式四步龙格-库塔推进格式和隐式LU-SGS推进格式来验证网格重排序后对计算效率的提高作用。原始网格均用Delaunay方法生长,并分别使用了两种重排序方法进行比较。计算结果表明:重排序后的计算效率可以提高到未排序时的3到5倍,很具实用价值。
Reordering of 3 -D unstructured grids for computing efficiency improvement is proposed. The reordering optimize the store position of the infonnation of the grids in the EMS memory, so the time cost of the process of searching these information is reduced at a large extent, and the total computing cost is reduced. In order to check up the contribution of the grid reordering to the efficiency improvement, two numerical examples of transonic inviscid flow around the ONERA M6 wing and DLR- F4 wingbody configuration are presented, and both explicit Four- Stage -Runge -Kutta scheme and implicit LU-SGS scheme are discussed. The original grid is created by Delaunay method, and two reordering methods are discussed. The results indicate the computing efficiency using reordered grids is three to five times of that using original grids.
出处
《航空计算技术》
2005年第3期25-28,共4页
Aeronautical Computing Technique
