计算物理 ›› 1990, Vol. 7 ›› Issue (2): 241-249.

• 论文 • 上一篇    下一篇

Van der Waals气体定常一维流的数值求解

闵赛金1, 李秀英1, 罗时钧2   

  1. 1. 长沙市国防科技大学 410003;
    2. 西安市西北工业大学 710072
  • 收稿日期:1989-10-09 出版日期:1990-06-25 发布日期:1990-06-25

NUMERICAL SOLUTIONS OF ONE DIMENSIONAL STEADY FLOW OF VAN DER WAALS GAS

Min Saijin1, Li Xiuying1, Luo Shijun2   

  1. 1. National University of Defence Technology;
    2. Northwestern Polytechnical University
  • Received:1989-10-09 Online:1990-06-25 Published:1990-06-25

摘要: 本文用数值计算方法,分别求解了Van der Waals气体在给定喷管中的等熵,等温无激波流动,并将结果与用完全气体状态方程所获得的计算结果进行比较,分别得到了等熵、非等熵情况下完全气体假设对真实气体的偏差。本文所得的结论对冷冻风洞、高超音速风洞技术的发展以及火箭发动机的设计等都有一定的指导意义。

关键词: 完全气体, 真实气体, 定常一维流, 数值解

Abstract: The parameters of one dimensional steady flow of a Van der Waals gas in a nozzle of variable cross section A(x) for isentropic and thermostatical expansion flow are obtained by numerical methods in this paper. The solutions are compared with the theorical solutions of pefect gas and the deviations of the Mach number, density, pressure and temperature ratios are obtained. The obtained conclusions is significative for directing the development of technology of cryogenic and hypersonic tunnels, and the design for rocket engine.

Key words: perfect gas, real gas, one dimensional steady flow, numerical solution