计算物理 ›› 1989, Vol. 6 ›› Issue (2): 228-232.

• 论文 • 上一篇    下一篇

跨音速定常势流计算中的解不唯一问题

刘凭, 罗时钧   

  1. 西北工业大学, 西安
  • 收稿日期:1988-05-23 出版日期:1989-06-25 发布日期:1989-06-25

NONUNIQUE SOLUTION PROBLEM IN THE COMPUTATION OF TRANSONIC POTENTIAL FLOW

Liu Ping, Luo Shijun   

  1. Northwestern Polytechnical University, Xi'an
  • Received:1988-05-23 Online:1989-06-25 Published:1989-06-25

摘要: 本文采用近似因式分解(AF2)方法,数值求解二元跨音速小扰动速势方程。大量的数值实验表明:1.选取不同的松驰因子或加速收敛参数可能得到不唯一解。2.选取不同的初场,无论是采用Murman-Cole守恒或非守恒格式,还是采用Engquist-Osher格式,都可能得到不唯一解。

Abstract: An implicit approximate factorization scheme(AF2) is employed in this paper to obtain the numerical solutions of TSD and TSTD equation.the numerical experiments show that:1.the solutions are nonunique for different initial φ.2.the solutions are nonunique for different relaxation factors or different accelerate parameters.