高超声速环境D6AC钢结构多物理场耦合模拟  

Multi⁃physics coupling simulation of D6AC steel structure in hypersonic environment

作　　者：王文瑞[1,2] 叶伟 王帅 温晓东 WANG Wenrui;YE Wei;WANG Shuai;WEN Xiaodong(School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China;The Key Laboratory of Fluid and Matter Interaction,University of Science and Technology Beijing,Beijing 100083,China;China Aerospace Science and Industry Corporation Limited Institute of Magnetic Levitation and Electromagnetic Propulsion,Beijing 100143,China;Tianjin Aerospace Electromechanical Equipment Research Institute,Tianjin 300301,China)

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]北京科技大学流体与物质相互作用教育部重点实验室,北京100083 [3]中国航天科工集团有限公司磁悬浮与电磁推进技术研究院,北京100143 [4]天津航天机电设备研究所,天津300301

出　　处：《哈尔滨工业大学学报》2021年第1期130-138,共9页Journal of Harbin Institute of Technology

基　　金：国防基础科研资助项目(JSHS2014208C001)。

摘　　要：为探究热防护材料在高超声速环境下的服役行为,采用风洞试验和数值模拟方法研究了D6AC钢结构在多物理场耦合作用下的失效问题.基于高超声速气动力学、结构力学基本理论,建立高超声速D6AC钢结构的多物理场耦合理论模型,利用Navier⁃Stokes方程模拟得到其在不同飞行环境下的气动加热和结构响应,并对数值模拟的结果进行风洞试验验证.结果表明,风洞试验结果与数值模拟结果相吻合.气动热是导致D6AC钢结构破坏的主要因素,在三组来流条件下钢结构均发生了烧蚀现象,结构烧蚀开始时间取决于来流总温的大小.To explore the service behavior of thermal protection materials in hypersonic environments,wind tunnel experiments and numerical simulation methods are used to investigate the failure of D6AC steel structure under multi⁃physics coupling.Based on the basic theory of hypersonic aerodynamics and structural mechanics,the multi⁃physics coupling theory model of hypersonic D6AC steel structure is established.The aerodynamic heating and structural response in different flight environments are obtained by N⁃S equation simulation,and the results of numerical simulation are verified in wind tunnel test.The aerodynamic heat is the main factor leading to the failure of D6AC steel structure.Under three different flow conditions,the ablation phenomenon occurs in the steel structure,and the starting time of the structure ablation depends on the total temperature of the incoming flow.

关 键 词：高超声速 多物理场耦合 热防护材料 D6AC钢 气动热 

分 类 号：TH73[机械工程—精密仪器及机械]