热化学非平衡流数值模拟双温模型设计开发  

Development of Two-Temperature Model for Numerical Simulation of Thermochemical Non-equilibrium Flow

作　　者：李中武[1] 李立[1] 李振彦 LI Zhong-wu;LI Li;LI Zhen-yan(Xi′an Aeronautics Computing Technique Research Institute,AVIC,Xi′an 710000,China)

机构地区：[1]航空工业西安航空计算技术研究所,陕西西安710000

出　　处：《航空计算技术》2023年第5期29-33,共5页Aeronautical Computing Technique

基　　金：航空科学基金项目资助(2019ZA31002)。

摘　　要：热化学非平衡流数值模拟是研究高温真实气体效应对高超飞行器的气动特性、热环境影响规律的重要方法。以开发基于结构网格求解器的高温真实气体效应数值模拟功能模块为目标,发展了气体组分的能量松弛时间计算方法,在原型系统基础上提出了平衡/非平衡流数值模拟的数据结构扩展和双温模型功能函数族开发模式,完成真实气体效应的双温模型功能模块开发。结果表明发展的能量松弛时间计算方法正确,数据结构扩展方法、开发模式适用于热化学非平衡流数值模拟求解器开发,本研究形成的功能模块可为热化学非平衡流对飞行器气动特性影响提供评估分析。Numerical simulation of thermochemical non-equilibrium flow is an important method to study the effect on the aerodynamic characteristic and thermal environment of hypersonic vehicles.With the objective of developing a computational analysis tool for high-temperature real-gas effect based on a structural grid solver,the physical mathematical model based on a two-temperature model is studied,A exclusive calculation method for vibrational-translational relaxation time between different energies is devised.Based on prototype system,the data structure extension methods and the development idea of computational function families which consider thermally perfect gas and thermochemical non-equilibrium gas are proposed.The design of numerical simulation process and the design of relevant function families for vibrational and source term are carried.The results of the validation tests show that the numerical calculation method and software architecture are suitable for the numerical simulation of hypersonic non-equilibrium flow,and the developed software can be used as a tool for conducting numerical simulation of hightemperature real gas effects and evaluating hypersonic vehicle design.

关 键 词：能量松弛 热化学非平衡流 双温模型 求解器开发 

分 类 号：V411[航空宇航科学与技术—航空宇航推进理论与工程]