摘要
应用投影变换的方法生成三维翼身组合体的表面网格,提出了新的三维空间多层背景网格生成方法。在背景网格建立和三维初始推进面生成的前提下,利用推进阵面法生成了翼身组合体的三维空间网格,并应用网格光顺技术和变换方法,改进了初始生成网格的质量。应用格心格式的有限体积法对翼身组合体绕流进行了Euler方程的数值模拟,得到了较为满意的计算结果。
In this paper, the authos generate the surface unstructured grid for 3-D combination of the body and wing by means of projection transformation. A multinomial method of background grid generation is adopted to control quality and distribution of the unstructured grid. After the surface unstructured grid has been generated, the 3-D unstructured grid for the combination of the body and wing is generated by means of AFM. Improving the quality of the original (3-D) unstructured grid by means of deleting some small and distorted elements and smoothing technique, the Euler equation is solved for the combination of the wing and body by means of the finite-volume method on the unstructured grids. Various methods are used for quick convergence and the results are in correspondence with the experiment data.
出处
《飞行力学》
CSCD
2004年第2期20-23,共4页
Flight Dynamics
关键词
非结构网格
推进阵面法
有限体积法
欧拉方程
翼身组合体
unstructured grid
advancing front method
finite-volume method
Euler equation
wing-body combination
