【摘要】 以某型火箭发动机的再生冷却推力室为研究对象,建立了关于推力室的几何型面、质量、流动、传热和结构应力的仿真模型,在iSIGHT软件平台上利用基于响应面模型的协同优化算法对其进行了分布并行的多学科设计优化(MDO),优化目标为权衡推力室质量、出口比冲和冷却通道压降的综合改善。改进的计算结果表明了MDO在推力室设计中的可行性和实用性。更多还原

【Abstract】 A multidisciplinary design optimization (MDO) approach dealing with regeneratively cooled thrust chamber of a certain rocket engine was presented. Multiple analyses codes of thrust chamber about size, mass, flow, heat transfer and stress were developed and incorporated by iSIGHT software system. Then collaborative optimization (CO) method based on embedded response surface models (RSM) was investigated with distributed and parallel processing. The objective function was a trade-off among the improvements of chamber mass, specific impulse and pressure drop in cooling passages. The improved results proved the feasibility and applicability of the MDO approach for thrust chamber design.更多还原