支板凹腔耦合超燃燃烧室燃油动态调节研究

推进技术 ›› 2016, Vol. 37 ›› Issue (1): 77-82.

支板凹腔耦合超燃燃烧室燃油动态调节研究

王建臣¹,林宇震¹,郭新华²,张弛¹,刘伟¹

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,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,北京动力机械研究所高超声速冲压发动机技术重点实验室，北京 100074,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,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

发布日期:2021-08-15
作者简介:王建臣，男，博士生，研究领域为超声速燃烧。

Fuel Dynamic Regulation Characteristics of a Strut-Cavity Based Scramjet Combustor

National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics， School of Energy and Power Engineering，Beihang University，Beijing 100191，China,National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics， School of Energy and Power Engineering，Beihang University，Beijing 100191，China,Science and Technology on Scramjet Laboratory，Beijing Power Machinery Institute，Beijing 100074，China,National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics， School of Energy and Power Engineering，Beihang University，Beijing 100191，China and National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics， School of Energy and Power Engineering，Beihang University，Beijing 100191，China

Published:2021-08-15

摘要/Abstract

摘要： 在纯净空气来流下，对以液态航空煤油为燃料，以支板凹腔耦合方式稳焰的超燃燃烧室的燃油动态调节进行了研究，采用两台柱塞泵供油，结果表明:总燃油当量比为0.83的条件下，动态切换支板喷射位置从上游到下游的过程中，燃烧室上游的壁面压力先下降后上升，而靠近出口的壁面压力则先上升后下降，并最终稳定；动态调节支板喷射的当量比，壁面压力峰值随当量比升高而升高，但壁面压力提升的起始位置随当量比升高向上游移动；通过试验验证动态调节后的稳定时间足够，试验数据可靠。

关键词: 支板；凹腔；纯净空气；超燃；动态调节

Abstract: Experiments were performed to study the fuel dynamic regulation characteristics of a strut-cavity based scramjet combustor in clean air. The fuel was liquid kerosene and injected by two plunger pumps. The results show that，when the total fuel equivalence ratio was fixed at 0.83，if the location of injection from strut was changed from upstream to downstream dynamically，the upstream wall static pressure dropped then increased，but the downstream wall static pressure around the exit of the combustor increased then dropped，and at last they were stable. If the equivalence ratio of injection from strut was changed dynamically，the peak wall static pressure increased with the equivalence ratio，but the original location of the pressure rise would be moved upstream. Through experimental verification，the stability time after dynamic regulation was long enough，and the results were reliable.

Key words: Strut; Cavity；Clean air；Supersonic combustion；Dynamic regulation

王建臣,林宇震,郭新华,张弛,刘伟. 支板凹腔耦合超燃燃烧室燃油动态调节研究[J]. 推进技术, 2016, 37(1): 77-82.

WANG Jian-chen¹,LIN Yu-zhen¹,GUO Xin-hua²,ZHANG Chi¹,LIU Wei¹. Fuel Dynamic Regulation Characteristics of a Strut-Cavity Based Scramjet Combustor[J]. Journal of Propulsion Technology, 2016, 37(1): 77-82.

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