亚燃燃烧室稳态工作过程数值研究  

Numerical investigation on working process in a liquid ramjet chamber

作　　者：黄日鑫[1] 谭永华[2] 

机构地区：[1]西安航天动力研究所,陕西西安710100 [2]航天推进技术研究院,陕西西安710100

出　　处：《火箭推进》2009年第2期18-24,共7页Journal of Rocket Propulsion

摘　　要：采用Fluent流场计算软件,对液体亚燃冲压发动机燃烧室的稳态工作过程,包括点火前的冷流场与点火后的两相反应流场进行数值模拟研究。首先,通过二维计算,对比研究两种不同阻塞比燃烧室方案的冷流损失特性与回流区特性,进行方案初选。随后,对选型后方案进行两相反应流场计算,研究燃烧室热态工作过程的温度场、燃油分布与燃烧效率的一般规律,比较并选择适合的燃油供应方案;最后,对燃烧室进行三维详细结构的建模并计算。计算结果很好地揭示了燃烧室内的流动和燃烧过程,与试验数据吻合较好。Based on Fluent software, numerical investigation is performed on working process, including non-reacting flow before ignition and two phases reacting flow after ignition, in a liquid ramjet combustion chamber. The inner flow characteristics of two different block-area-ratio schemes are analyzed in total pressure loss and reeirculation region distribution. After comparison, the smaller block-area-ratio scheme with good performance is chosen. Then simulation of two phases reacting flow is performed, and temperature field, fuel distribution and combustion efficiency are obtained, which helps to decide a reasonable fuel feeding scheme. At last, the results of three dimensional simulation provide a more particular understanding of flow and combustion process, and simulation results fit the experiment data well.

关 键 词：亚燃冲压发动机 燃烧室 工作过程 数值模拟 

分 类 号：TK16[动力工程及工程热物理—热能工程]