NNW-HyFLOW高超声速流动模拟软件框架设计

doi:10.7527/S1000-6893.2021.25718

国家数值风洞(NNW)进展及应用专栏

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NNW-HyFLOW高超声速流动模拟软件框架设计

李鹏^1,2, 陈坚强^1,2, 丁明松², 何先耀², 赵钟^1,2, 董维中²

1. 中国空气动力研究与发展中心空气动力学国家重点实验室, 绵阳 621000;
2. 中国空气动力研究与发展中心计算空气动力研究所, 绵阳 621000

收稿日期:2021-03-30 修回日期:2021-04-27 发布日期:2021-05-20
通讯作者: 董维中 E-mail:dongwz1966@163.com
基金资助:
国家数值风洞工程

Framework design of NNW-HyFLOW hypersonic flow simulation software

LI Peng^1,2, CHEN Jianqiang^1,2, DING Mingsong², HE Xianyao², ZHAO Zhong^1,2, DONG Weizhong²

1. State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang 621000, China;
2. Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China

Received:2021-03-30 Revised:2021-04-27 Published:2021-05-20
Supported by:
National Numerical Windtunnel Project

摘要/Abstract

摘要： NNW-HyFLOW在国家数值风洞（NNW）工程支持下，由风雷开源软件提供基础框架支撑，将建设成为基于结构/非结构混合网格，面向高超声速应用领域的国产自主工业CFD软件，具备高温气体热化学非平衡效应模拟及其相关气动力、气动热和气动物理特性计算分析等主要特色功能。本文从框架设计、数据结构、耦合方法、并行计算方法以及接口设计等方面对软件设计思想和框架特点进行了介绍，给出了求解器采用的理论模型、核心数值算法及其实现方法，结合HEG风洞试验、RAM-C飞行试验、Electre飞行试验以及航天飞机OV102飞行试验等典型算例开展了数值模拟。研究表明：NNW-HyFLOW具有底层代码复用、功能兼容性好、扩展能力强和接口灵活等优点，其当前测试版本已经具备了较好的高超声速非平衡流动数值模拟能力，在热化学非平衡效应及其影响的气动力特性、气动热环境和等离子体分布特性预测与评估方面，具有较高的数值计算精准度，初步满足了高超声速复杂飞行器高温非平衡流动数值模拟的需求。

关键词: 高超声速, 热化学非平衡, 国家数值风洞(NNW)工程, NNW-HyFLOW, 风雷软件, CFD软件

Abstract: NNW-HyFLOW, supported by the National Numerical Windtunnel (NNW) Project, is developed as a domestic independent industrial CFD software for hypersonic flow simulation based on structural/unstructured hybrid grids. It is designed with the basic framework provided by the PHengLEI open source program, and can be used mainly for simulation of thermochemical nonequilibrium effects of high temperature gas, and calculation and analysis of related aerodynamic forces, aerodynamic heat and aerophysical characteristics. The design ideas and framework characteristics of the software are first introduced, including the framework design, data structure, coupling method, parallel computing method, and interface design. Then, the theoretical models, core numerical methods and their implementation employed by the solver are illustrated. Finally, numerical simulations using the software are conducted for several examples including the HEG wind tunnel experiment, RAM-C flight experiment, Electre flight experiment and flight experiment of space shuttle OV102 model. Results shows that the software has the advantages of less code reuse, good functional compatibility, strong expansion capabilities, and flexible interface. Additionally, its current test version already has a good simulation capability for hypersonic nonequilibrium flow, and can achieve high accuracy in prediction and evaluation of thermochemical nonequilibrium effects and their impact on aerodynamic forces, aerothermal environment and plasma distribution characteristics. It is proved that the software can meet the basic requirements of numerical simulation of high-temperature nonequilibrium flow for the complex hypersonic aircraft.

Key words: hypersonic, thermochemical nonequilibrium, National Numerical Windtunnel (NNW) Project, NNW-HyFLOW, PHengLEI software, CFD software

中图分类号:

李鹏, 陈坚强, 丁明松, 何先耀, 赵钟, 董维中. NNW-HyFLOW高超声速流动模拟软件框架设计[J]. 航空学报, 2021, 42(9): 625718-625718.

LI Peng, CHEN Jianqiang, DING Mingsong, HE Xianyao, ZHAO Zhong, DONG Weizhong. Framework design of NNW-HyFLOW hypersonic flow simulation software[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(9): 625718-625718.

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NNW-HyFLOW高超声速流动模拟软件框架设计

Framework design of NNW-HyFLOW hypersonic flow simulation software

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