| 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 |
| DOI： |
| 分类号:V434.11 |
| 基金项目: |
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| NUMERICAL SIMULATION OF REACTING FLOWS IN LO2/LH2 ROCKET ENGINE NOZZLE |
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Fang Dingyou, Zhang Weihua, Xia Zhixun, Wang Jianping
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Dept. of Aerospace Technology, National Univ. of Defence Technology, Changsha, 410073
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| 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 |
