固体火箭技术2025，Vol.48Issue(2)：242-252,11.DOI:10.7673/j.issn.1006-2793.2025.02.009
燃烧室释热分布对宽速域RBCC性能影响规律研究及释热预测模型构建
Influence of combustor heat release distribution on the performance of wide-speed-range RBCC and construction of heat release prediction model
摘要
Abstract
To achieve stability and efficiency in the wide-speed-range operation of rocket based combined cycle(RBCC)en-gines,one-dimensional analysis was used to study the influence of combustion chamber heat release distribution on RBCC engine performance under wide range conditions.The results indicate that the formation of a concentrated heat release distribution in the combustor is beneficial for improving the performance of RBCC engines,but the shortest heat release interval length is constrained by the anti backpressure ability of the inlet,and the allowable heat release interval length is shorter when the inflow velocity is higher.The numerical simulation results were verified through ground experiments,and the relationship between the inflow conditions,en-gine configuration,and the distribution of heat release rate in the numerical simulation was established using Rayleigh probability density function and power function.The correlation coefficients between the predicted curves within the validation set and the origi-nal data are all above 0.9,which can be used for rapid prediction of RBCC engine performance.关键词
火箭基组合循环发动机/宽速域/释热分布/释热率预测Key words
RBCC/heat release distribution/wide-speed-range/prediction of heat release rate引用本文复制引用
朱润童,尹竣,葛保聪,安健,朱韶华,秦飞..燃烧室释热分布对宽速域RBCC性能影响规律研究及释热预测模型构建[J].固体火箭技术,2025,48(2):242-252,11.基金项目
国家自然基金青年基金项目(52106165). （52106165）
