摘要
本文根据差分格式构造过程中对三阶、四阶人工粘性及嫡增条件的分析［１，２］，构造出适合于非结构单元的有限元法。计算实例表明，这种方法能较好地捕捉间断。
A finite element algorithm, which can be applied to the case of multi-dimensional, structured or unstructured grids, has been developed. It is treated physically by adding separated different appropriate artificial viscosity terms of 3rd and 4th-order derivatives to the originating equations before and after the shock in order to satisfy the fentropy increasing condition. It is shown that the present algorithm can capture shock wave with better resolution and without spurious fluctuations.
出处
《空气动力学学报》
CSCD
北大核心
1996年第1期13-18,共6页
Acta Aerodynamica Sinica
基金
国家自然科学基金
