空气动力学学报Issue(4)：530-535,6.DOI:10.7638/kqdlxxb-2014.0003
基于高效数值方法的高速飞行器气动力热特性快速预测研究
Fast prediction based on effective numerical method for aerodynamic force and heat of high speed vehicles
王荣 1张学军 1纪楚群1
作者信息
- 1. 中国航天空气动力技术研究院，北京 100074
- 折叠
摘要
Abstract
A fast aerodynamic characteristics prediction technique is developed to predict aer-odynamic force and heat,combining effective space marching numerical method with engineering method based on surface stream tracking technique.Hypersonic aerodynamic forces are obtained effectively by solving the Euler equations numerically with fast space marching method.In order to calculate the heat flux,an engineering method,called tracking the surface stream trace based on the axisymmetric analogue technique and boundary layer theory,is adopted and developed to be applicable for complex geometry.The inviscid flow parameters and surface stream lines re-quired in the engineering method are obtained from above mentioned inviscous numerical flow fields.The proposed method for aerodynamic force and heat prediction is applied to high speed vehicles,the results show that the space marching method saves the computational cost enor-mously,approximately one order less comparing to the time marching method,while the two methods have similar precision in aerodynamic force evaluation.The predicted error of heat flux is within 20% comparing to that of wind tunnel test.The technique promoted is an effective ap-proach suitable for the needs of fast aerodynamic configuration design and optimization.关键词
空间推进/流线追踪/高速飞行器Key words
space marching/stream trace/high speed vehicle分类
航空航天引用本文复制引用
王荣,张学军,纪楚群..基于高效数值方法的高速飞行器气动力热特性快速预测研究[J].空气动力学学报,2015,(4):530-535,6.
