推进技术 ›› 1996, Vol. 17 ›› Issue (4): 1-4.

• •    下一篇

液氢液氧发动机喷管化学反应流数值模拟

方丁酉,张为华,夏智勋,王建平   

  1. 国防科技大学航天技术系;国防科技大学航天技术系;国防科技大学航天技术系;国防科技大学航天技术系
  • 发布日期:2021-08-15

NUMERICAL SIMULATION OF REACTING FLOWS IN LO2/LH2 ROCKET ENGINE NOZZLE

  1. Dept. of Aerospace Technology, National Univ. of Defence Technology, Changsha, 410073;Dept. of Aerospace Technology, National Univ. of Defence Technology, Changsha, 410073;Dept. of Aerospace Technology, National Univ. of Defence Technology, Changsha, 410073;Dept. of Aerospace Technology, National Univ. of Defence Technology, Changsha, 410073
  • Published:2021-08-15

摘要: 用时间相关的半隐格式求解液氢液氧发动机喷管中的化学反应流动,考虑了6种燃烧产物,8个基元反应,得到了流动参数和产物的质量分数在流场中的分布,为发动机化学动力学损失计算和喷管热结构设计提供了必要数据。计算结果表明,采用半隐格式解决组分连续方程刚性引起的数值不稳定是有效的。

关键词: 氢氧发动机;发动机喷管;喷管气流;反应流;数值模拟

Abstract: The reacting flowfield in LO2/LH2 rocket engine nozzle is computed by using time-dependent semi-implicit difference scheme. An 6-species, 8-step chemistry model is adopted for LO2-LH2reactions. The distributions of flow parameters and mass fraction of products are presented. The computations indicate that the numerical instability is overcome by semi-implicit scheme.

Key words: Hydrogen oxygen engine;Engine nozzle;Nozzle gas flow;Reacting flow;Numerical simulation