两型甲烷/空气燃气发生器设计与仿真研究
Design and Simulation Study of Two Types of Methane/Air Gas Generators
霍龙 1张小通 1周全宝 1郝亚星 1张伟1
作者信息
- 1. 北京航天试验技术研究所,北京 100074
- 折叠
摘要
飞行器热喷流干扰风洞试验需研制稳定可靠工作的甲烷/空气燃气发生器为其提供高温燃气.对燃气发生器进行结构设计,采用同轴直流式和同轴离心预混式两种喷注器结构,并利用数值模拟方法获得其稳态燃烧场,考察两种类型甲烷/空气火炬点火器的燃烧性能和燃烧室热载.结果表明,两种喷注结构条件的火炬点火器均可以满足设计要求,但同轴直流喷注方式燃烧性能表现更好,采用同轴直流式喷注方式比预混喷注方式的燃气温度及组分均匀度更高.
Abstract
The aircraft thermal jet interference wind tunnel test requires the development of a stable and reliable working methane/air gas generator to provide high temperature gas for it.The gas generator structurally is designed with two injector structures,coaxial direct-flow and coaxial centrifugal premixed,and numerical simulation is used to obtain its steady-state combustion field and investigate the combustion performance and combustion chamber heat load of the two types of methane/air flare igniters.The results show that the flare igniters of both injection structures can meet the design requirements,but the coaxial DC injection method has better combustion performance,and the gas temperature and component uniformity are higher with the coaxial DC injection method than with the premixed injection method.
关键词
甲烷/空气燃气发生器/结构设计/数值模拟/燃烧性能Key words
methane/air gas generator/structural design/numerical simulation/combustion performance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据