涡轮基组合循环发动机性能数值模拟

刘增文; 王占学; 蔡元虎; 马会民

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涡轮基组合循环发动机性能数值模拟
刘增文,王占学,蔡元虎,马会民
1.西北工业大学动力与能源学院;2.北京动力机械研究所

摘要:

分析了涡轮基组合循环发动机的布局方式,选择串联式涡扇-冲压组合发动机方案作为研究对象,给出了涡扇发动机和冲压发动机主要设计参数,阐述了涡轮冲压组合发动机模态转换点的选择方法,选择马赫数3作为工作模态转换点。基于模块化合成程序的研究思想,采用数值模拟方法研究了沿飞行轨迹的涡轮冲压组合发动机的气动热力学参数以及性能特性,研究表明,可在推力波动不大于10%的情况下完成工作模态转换。

关键词: 涡轮基组合循环发动机性能数值仿真

DOI：

分类号:V235

基金项目:国防基础科研基金(A0420060522)

Numerical simulation of performance for turbine based combined cycle propulsion system

LIU Zeng-wen¹, WANG Zhan-xue², CAI Yuan-hu³, MA Hui-min⁴

1.School of Power and Energy,Northwestern Polytechnical Univ.,Xi’an 710072,China;2.School of Power and Energy,Northwestern Polytechnical Univ.,Xi’an 710073,China;3.School of Power and Energy,Northwestern Polytechnical Univ.,Xi’an 710074,China;4.Beijing Power Machinery Research Inst.,Beijing 100074,China

Abstract:

The arrangement of turbine based combined cycle engines were investigated.Co-axial and tandem configuration was selected as a turbofan-ram combined engine.The design parameters of both turbofan engine and ramjet were laid out,and the rules were expounded to explain how to ascertain the transition point of operation mode.Based on a modular structure code,the performance characteristic of turbo-ramjet was simulated by numerical method.

Key words: Turbine based combined cycle propulsion system Performance Numerical simulation