| 摘要: |
| 为了研究旁侧突扩加热器的燃烧性能,对已有的冲压发动机用旁侧进气突扩燃烧室燃烧性能进行了理论分析,并通过了相关的试验验证工作。结果表明:在来流总温288K时,现有的冲压发动机的旁侧进气突扩燃烧室头部不能形成稳定的高温回流区,所以不能维持稳定燃烧。为了提高旁侧进气突扩燃烧室的燃烧性能,在继承现有的旁侧进气突扩燃烧室的突扩比的情况下,由进气道等直段喷油改为转弯段喷油,相邻进气道前后错开200mm。计算结果表明优化后的旁侧突扩加热器的燃烧效率为0.98,满足加热器对燃烧效率的要求。 |
| 关键词: 旁侧突扩 加热器 燃烧性能 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Combustion Performance Study of Side Dump Heater |
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CHEN Jing-min1,LI Zhi-yong1,WANG Deng-yun1,WANG Hong-mei1,LI Li-han1,2
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(1. Beijing Power Machinery Institute,Beijing 100074,China;2.Science and Technology on Scramjet Laboratory,Beijing Power Machinery Institute,Beijing 100074,China)
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| Abstract: |
| In order to study combustion performance of side dump heater, theoretical analysis is carried out to get the combustion performance of the ramjet dump combustor with comparable testing demonstration. The results indicate that stable combustion can not be obtained because of no high temperature recirculation zone in the head of existing ramjet combustor at incoming air total temperature 288K. In order to increase the performance of dump combustor, the ratio of inlet to combustor is the same as the existing dump combustor, then the injection sites are from the straight section to the turn section, and the adjoining inlets stagger 200mm from beginning to end. Simulation results indicate that the combustion efficiency of the optimized side dump heater is 0.98, it can meet the heater combustion requirements for the combustion efficiency. |
| Key words: Side dump Heater Combustion performance |
