航空学报 > 2016, Vol. 37 Issue (12): 3692-3697   doi: 10.7527/S1000-6893.2016.0080

CRM翼/身/平尾组合体模型高阶精度数值模拟

王运涛1, 孙岩2, 孟德虹1, 王光学1   

  1. 1. 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;
    2. 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
  • 收稿日期:2016-01-20 修回日期:2016-03-14 出版日期:2016-12-15 发布日期:2016-03-21
  • 通讯作者: 孟德虹,Tel.:0816-2463062,E-mail:mdh157@163.com E-mail:mdh157@163.com
  • 作者简介:王运涛,男,博士,研究员,博士生导师。主要研究方向:计算空气动力学。Tel.:0816-2463037,E-mail:ytwang@skla.cardc.cn;孙岩,男,博士研究生。主要研究方向:计算流体力学。Tel.:0816-7067915,E-mail:supersunyan@163.com;孟德虹,男,硕士,助理研究员。主要研究方向:计算空气动力学。Tel.:0816-2463062,E-mail:mdh157@163.com;王光学,男,硕士,副研究员。主要研究方向:计算空气动力学和大攻角分离流。Tel.:0816-2463062,E-mail:wgx111@sina.com
  • 基金资助:

    国家重点研发计划(2016YFB0200700)

High-order precision numerical simulation of CRM wing/body/horizontal tail model

WANG Yuntao1, SUN Yan2, MENG Dehong1, WANG Guangxue1   

  1. 1. Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China;
    2. State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang 621000, China
  • Received:2016-01-20 Revised:2016-03-14 Online:2016-12-15 Published:2016-03-21
  • Supported by:

    National Key Research and Development Program (2016YFB0200700)

摘要:

基于五阶空间离散精度的WCNS格式,开展了CRM翼/身/平尾组合体模型的高阶精度数值模拟,以评估WCNS格式对复杂外形的模拟能力以及典型运输机巡航构型阻力预测方面的精度。首先依照DPW组委会提出的网格生成指导原则,利用ICEM软件生成了粗、中、细3套网格,对应的y+分别为1、2/3和4/9。通过对CRM模型的计算和分析,研究了网格规模对气动特性、压力分布和翼根后缘局部分离区的影响。通过与DPW4统计结果和部分实验结果的对比,高阶精度数值模拟结果表明,本文的气动特性计算结果与统计平均结果吻合较好;网格密度对机翼内侧的展向站位压力分布影响较小,对机翼外侧展向压力分布影响较大;网格密度对翼根后缘局部分离区略有影响。

关键词: RANS方程, WCNS格式, CRM模型, 流场模拟, 网格密度, 气动特性

Abstract:

High-order numerical simulation on common research model (CRM) wing/body/horizontal tail model is presented with the fifth-order WCNS scheme to assess the ability of high-order WCNS scheme on complex configuration simulation and the precision of predicating cruise drag of transonic configuration. Three grids (coarse, medium and fine) are created with software ICEM according to the gridding guidelines provided by Drag Prediction Workshop (DPW) organizing committee, and the y+ of the three grids are 1, 2/3 and 4/9. Computation and analysis on three grids are carried out to investigate the grid effect on aerodynamic characteristics, pressure distribution and the local separation bubble at the wing root trailing edge. Compared to the statistic results from DPW4 and some experimental data from NTF, the high-order numerical results show that the computational results of aerodynamic characteristics agree well with statistic data; the grid density has little influence on pressure distribution on the inboard stations, whereas it has some influence on the outboard stations; the grid density has some influence on the size of the local separation bubble at the wing root trailing edge.

Key words: RANS equations, WCNS scheme, CRM model, flow field simulation, grid density, aerodynamic characteristics

中图分类号: