摘要
本文综合应用近似因子分裂法、矢通量分裂法及ＮＮＤ格式的离散思想，对柏对称Ｅｕｌｅｒ方程构造了一种修正的隐式格式，对球柱及多截锥旋成体在Ｍ∞＝１附近跨声速绕流情况进行了计算。与其它方法比较，本方法具有收敛速度快、精度高的优点。尤其对Ｍ∞＝１时的跨声速绕流情况。
The Implicit difference scheme for solving the axis-symmetric Euler equation is developed by ideas of the approximate factorization,flux vector splitting and NND scheme in this paper. The transonic flow near M∞=1 for sphere cylinder is calculated. This scheme has more rapid convergence speed and more high precision than other ones. This advantage is even more important for the transonic flow at M∞=1.
出处
《空气动力学学报》
CSCD
北大核心
1996年第1期73-78,共6页
Acta Aerodynamica Sinica
关键词
跨声速流
有限差分法
数值计算
欧拉方程
transonic flow
finite difference method
numerical calculation
Euler equation
