摘要
高超声速飞行器战略意义极高,是各国的关注要点。面向高超声速飞行器实时仿真的需求,提出基于CFD(Computational Fluid Dynamics)的高超声速飞行器多工况解集建模方法,通过积累大量离线状态解作为在线计算的有效支撑,平衡求解精度与求解效率之间的矛盾。具体以X-43A为研究对象,通过三维建模和网格划分建立计算模型,基于CFD软件Fluent进行多工况仿真。在实现大规模计算任务自动化批处理的基础上,构建出高超声速飞行器多工况稠密解集。对求解结果进行分析,其流场特性和气动特性很好地符合理论规律。
Hypersonic vehicle has great strategic significance and is of great concern to all countries.To meet the requirement of real-time simulation of hypersonic vehicle,a CFD-based multi-condition numerical modeling method is proposed.By accumulating a large number of off-line state solutions as an effective support for on-line calculation,the contradiction between accuracy and efficiency of simulation is balanced.Taking X-43 A as the research object,a computational model is established and the multi-condition simulation is carried out based on CFD software Fluent.With batch processing problem solved,the dense multi-condition solution set of hypersonic vehicle is constructed.The results show that the flow field and aerodynamic characteristics are in good agreement with the theoretical law.
作者
鲍晨莹
于浛
田超
李妮
BAO Chenying;YU Han;TIAN Chao;LI Ni(School of Automation Science and Electrical Engineering,Beihang University,Beijing 100083,China;Beijing Aerospace Systems Engineering Research Institute,Beijing 100076,China;Aossci Technology Co,.Ltd,Sichuan 610094,China)
出处
《中国体视学与图像分析》
2019年第3期181-190,共10页
Chinese Journal of Stereology and Image Analysis
基金
国家自然科学基金(No.61773032).
关键词
高超声速飞行器
数值模拟
多工况
批处理
FLUENT
hypersonic vehicle
numerical simulation
multiple working conditions
batch processing
fluent
作者简介
鲍晨莹(1996-),女(汉),河南洛阳,硕士生,研究方向:系统建模与仿真;通信作者:李妮,教授,E-mail:lini@buaa.edu.cn
