航天推进技术研究院主办
CHEN Bo,LIN Mu,WU Bao-yuan,et al.Numerical study on igniter performance of liquid ramjet combustor[J].Journal of Rocket Propulsion,2013,39(06):6-11.
液体亚燃燃烧室点火装置工作特性数值研究
- Title:
- Numerical study on igniter performance of liquid ramjet combustor
- 文章编号:
- 1672-9374(2013)06-0006-06
- Keywords:
- liquid ramjet combustor; igniter; flame ignition performance; steady-state flow field; numerical simulation
- 分类号:
- V434-34
- 文献标志码:
- A
- 摘要:
- 基于气体动力学和计算流体力学的相关理论,采用CFD-ACE+流场计算软件,对液体亚燃燃烧室点火装置单独工作时的稳态流场进行了数值模拟。在试验验证的基础上分析了点火器室压、 点火导管内径和导管的结构形式对火焰点火性能的影响。结果表明:当点火器室温和燃气流量恒定时,若保持管道的扩张比不变,选用较低室压的点火器更利于点火;在一定范围内增大导管内径可以提高火焰的点火性能;燃气在直管内的流动损失较小,出口射流的速度较高,穿透深度较大,带弯头的点火导管出口火焰特征类似,有无弯头对火焰的影响很大,而角度差异产生的影响很
- Abstract:
- Based on gas dynamics and computational fluid mechanics, the numerical simulation of the steady-state flow field of igniter working independently in the liquid ramjet combustor was conducted with CFD-ACE+ software. Influences of chamber pressure in igniter, ignition gas flow pipe's inner diameter and its structure on the flame ignition performance were analyzed on the basis of test validation. The analyzed result shows: under the conditions of constant igniter temperature and gas flow rate, lower chamber pressure in igniter is more beneficial to ignition if pipe expansion ratio remains unchanged; if the pipe inner diameter is increased within limits, the ignition performance of flame can be improved; if gas flows through the straight pipe it has less flow loss; the higher the gas jet flow velocity at the outlet is, the bigger the penetration depth appears; the elbow in the pipe has more influence on flame property, but the elbow angle has less influence.
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相似文献/References:
[1]雷向东,余协正,杨京军,等.氧气/煤油点火装置高空点火试验研究[J].火箭推进,2014,40(06):35.
LEI Xiang-dong,YU Xie-zheng,YANG Jing-jun,et al.High-altitude ignition tests of oxygen/kerosene ignition system[J].Journal of Rocket Propulsion,2014,40(06):35.
备注/Memo
收稿日期:2013-02-13;修回日期:2013-10-24
基金项目:国家863项目(2010AA702307)
作者简介:陈博(1988—),女,硕士研究生,研究领域为液体亚燃冲压发动机燃烧室