激波聚焦诱导气液两相爆震燃烧的数值模拟

杨青; 李志强; 邸亚超; 许欢

doi:10.13224/j.cnki.jasp.2014.08.007

激波聚焦诱导气液两相爆震燃烧的数值模拟

doi: 10.13224/j.cnki.jasp.2014.08.007

北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室, 北京 100191

详细信息

作者简介:
杨青（1988-），女，江苏徐州人，硕士生，主要从事脉冲爆震发动机研究。

中图分类号: V231
计量
- 文章访问数: 1435
- HTML浏览量: 6
- PDF量: 959
- 被引次数: 0
出版历程
- 收稿日期: 2013-05-15
- 刊出日期: 2014-08-28

Numerical simulation on gas-liquid two-phase detonation combustion induced by shock wave focusing

National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 对以激波聚焦和增加障碍物方式诱导煤油-空气气液两相爆震燃烧的过程进行了数值模拟.采用欧拉-拉格朗日方法建立了脉冲爆震发动机（PDE）中气液两相流的喷射、雾化、掺混过程.研究发现环形爆震波在爆震管凹腔内经过反射、汇聚后能够引燃可燃混合物.而在障碍物处，激波的反射和再反射聚焦能够形成高温高压点（2700K，25MPa），产生局部爆炸，有助于形成稳定的脉冲爆震燃烧（波面速度为1900m/s，温度为2950K），有效地缩短由缓燃向爆震转变（DDT）距离至0.45m.
- 激波聚焦 /
- 爆震燃烧 /
- 气液两相 /
- 脉冲爆震发动机 /
- 由缓燃向爆震转变
Abstract: Numerical simulation on gas-liquid two-phase detonation combustion of kerosene-air was conducted induced by shock wave focusing and setting obstacles. The numerical model of gas-liquid two-phase flow was established for the fuel injection, atomization and mixing of pulse detonation engine (PDE) by an Eulerian-Lagrangian formulation. Computational results show that the reflection and focusing of the ring shock wave can ignite the combustible mixture inside the capacity of detonation tube. Re-reflection and focusing of the reflecting shock wave could form higher temperature and pressure points (2700K, 25MPa) near the obstacles, which can lead to local explosion, further generate stable pulse detonation combustion (velocity of 1900m/s, temperature of 2950K) and shorten the length of deflagration to detonation transition (DDT) to 0.45m effectively.
- shock wave focusing /
- detonation combustion /
- gas-liquid two-phase /
- pulse detonation engine /
- deflagration to detonation transition

HTML

参考文献(16)

[1]	严传俊,范玮.脉冲爆震发动机原理及关键技术[M].西安:西北工业大学出版社,2005.
[2]	陈懋章.粘性流体力学基础[M].北京:高等教育出版社,2002.
[3]	王春.激波聚焦点燃高速可燃混合气流的实验研究[D].合肥:中国科学技术大学,2004. WANG Chun.The experiment study of shock wave focusing igniting combustible mixture with high speed[D].Hefei:Chinese University of Science and Technology,2004.(in Chinese)
[4]	Eckett C A.Numerical and analytical studies of the dynamics of gaseous detonations[D].Pasadena,US:California Institute of Technology,2000.
[5]	Jiang Z L,Takayama K.Reflection and focusing of toroidal shock waves from coaxial annular tubes[J].Computers and Fluids,1998,27(5/6):553-562.
[6]	Kailasanath K.Recent developments in the research on pulse detonation engines[J].AIAA Journal,2003,41(2):145-149.
[7]	Tangirala V E,Varatharajan B,Dean A J.Numerical investigations of detonation initiation[R].AIAA-2003-0716,2003.
[8]	Ma F,Choi J,Yang V.Thrust chamber dynamics and propulsive performance of single-tube pulse detonation engines[R].AIAA-2004-0865,2004.
[9]	Im K S,Yu S T.Analyses of direct detonation initiation with realistic finite-rate chemistry[R].AIAA-2003-1318,2003.
[10]	MA Fuhua,Choi J Y,Yang V.Thrust chamber dynamics and propulsive performance of single-tube pulse detonation engines[R].AIAA-2004-0865,2004.
[11]	秦亚欣,于军力,高歌.环形脉冲爆震发动机引射性能[J].航空动力学报,2011,26(1):35-41. QIN Yaxin,YU Junli,GAO Ge.Annular ejector pulse detonation engine performance[J].Journal of Aerospace Power,2011,26(1):35-41.(in Chinese)
[12]	秦亚欣,于军力,高歌.脉冲爆震发动机喷管性能数值分析[J].航空动力学报,2010,25(2):367-372. QIN Yaxin,YU Junli,GAO Ge.Pulse detonation engine nozzles performance numerical analysis[J].Journal of Aerospace Power,2010,25(2):367-372.(in Chinese)
[13]	黄生洪,徐胜利,刘小勇.煤油超然冲压发动机两相流场数值研究:(Ⅲ)煤油在超然流场中的多步化学反应特征[J].推进技术,2005,26(2):101-105. HUANG Shenghong,XU Shengli,LIU Xiaoyong.Combustion flow of kerosene-fueled scramjet with 3D cavity:(Ⅲ) multi-step chemistry characteristics of kerosene[J].Journal of Propulsion Technology,2005,26(2):101-105.(in Chinese)
[14]	Issa R I.Solution of the implicitly discredited fluid flow equations by operator-splitting[J].Journal of Computational Physics,1985,62(1):40-65.
[15]	Issa R I,Gosman A D,Watkins A P.The computation of compressible and incompressible recirculating flows by a non-iterative implicit scheme[J].Journal of Computational Physics,1985,62(1):66-82.
[16]	Wanik A,Schnell D.Some remarks on the PISO and SIMPLE algorithms for steady turbulent flow problems[J].Computers and Fluids,1989,17(4):555-570.