摘要
针对由于工程约束,载荷舱布置于进气道前端的内外流一体载荷投放分离问题,运用计算空气动力学耦合六自由度运动模型、动态嵌套网格以及内外流一体建模策略,开展内外流一体的载荷投放分离非定常流场数值模拟研究,分析评估内外流一体条件下的载荷投放分离运动特性及对内流进气道流场的影响。结果表明:综合考虑载荷分离安全及其对进气道流场影响程度,分散投放方案较为稳妥;两点对称投放方案则使得进气道Dc,60达到0.46的水平,周向不均匀度达到5.2%的水平,影响发动机工作的风险较高。
In response to the problem of embedded payload separation by using integrative computation of internal and external flows in the front end of the intake duct due to engineering constraints,a computational aerodynamics coupled six degree of freedom motion model,dynamic nested mesh,and internal and external flow coupling calculation strategy were used to conduct numerical simulation research on the unsteady flow field of payload separation by using integrative computation of internal and external flows.The characteristics of payload separation motion under the condition of integrated internal and external flow coupling and its impact on the flow field of the internal flow intake duct were analyzed and evaluated.The results showed that,considering the safety of payload separation and its impact on the intake flow field,the dispersed deployment scheme was relatively stable;the two-point symmetrical placement scheme resulted in the intake duct Dc,60 reaching a level of 0.46 and the circumferential distortion intensity reaching a level of 5.2%,which posed a higher risk of affecting engine operation.
作者
周宇轩
肖天航
熊庆荣
李博
郭静亮
ZHOU Yuxuan;XIAO Tianhang;XIONG Qingrong;LI Bo;GUO Jingliang(College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Xi’an Modern Control Technology Research Institute,China North Industries Group Corporation Limited,Xi’an 710065,China;College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing Hunan 210016,China;Hunan Shanhe Huayu Aviation Technology Limited Liability Company,Zhuzhou Hunan 412000,China)
出处
《航空动力学报》
北大核心
2025年第12期418-428,共11页
Journal of Aerospace Power
基金
湖南创新型省份建设专项经费资助(2021GK1020)。
关键词
内埋载荷分离
进气道流场
嵌套网格
气动干扰
总压畸变
embedded payload separation
air intake flow field
overset mesh
aerodynamic interference
total pressure distortion
