航空学报 > 2022, Vol. 43 Issue (11): 526312-526312   doi: 10.7527/S1000-6893.2021.26312

风洞试验雷诺数/静气动弹性效应分离方法

郭秋亭1,2, 孙岩3, 郭正1, 刘光远2   

  1. 1. 国防科技大学 空天科学学院, 长沙 410073;
    2. 中国空气动力研究与发展中心 高速空气动力研究所, 绵阳 622762;
    3. 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:2021-09-02 修回日期:2021-09-17 出版日期:2022-11-15 发布日期:2021-11-10
  • 通讯作者: 郭正,E-mail:space_guozh@126.com E-mail:space_guozh@126.com
  • 基金资助:
    国家自然科学基金(11802328);国家数值风洞工程(NNW-FSI-2021)

Separation method for Reynolds number/static aeroelastic coupling effect in wind tunnel test

GUO Qiuting1,2, SUN Yan3, GUO Zheng1, LIU Guangyuan2   

  1. 1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;
    2. High Speed Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 622762, China;
    3. Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China
  • Received:2021-09-02 Revised:2021-09-17 Online:2022-11-15 Published:2021-11-10
  • Supported by:
    National Natural Science Foundation of China (11802328); National Numerical Wind Tunnel Project (NNW-FSI-2021)

摘要: 雷诺数是风洞试验的重要模拟参数之一,目前大多数试验采用增加气体介质密度的方式来提高试验雷诺数。这种试验方式获得的数据中雷诺数与模型静气动弹性效应相互耦合,难以分离,给数据修正和使用带来了较大的困难。针对雷诺数效应风洞试验中雷诺数与结构静变形影响相互耦合的问题,采用流体数值计算和静气动弹性耦合计算相结合的方法,研究了雷诺数和静气动弹性变形对模型气动力系数的影响。在归纳气动力系数随雷诺数和静气动弹性变形的变化规律的基础上,发展了一种雷诺数/静弹性效应数值分离技术,能够准确预测雷诺数与静气动弹性变形对气动力特性的影响。尤其是在刚性模型气动力系数随雷诺数对数呈现近似线性变化的情况下,获得了合理的气动力系数分离结果,为常规风洞增压变雷诺数试验提供了一种简便快捷的数据修正手段。

关键词: 雷诺数效应, 静气动弹性变形, 耦合, 分离方法, CRM-WBT0模型

Abstract: Reynolds number is one of the important simulation parameters in wind tunnel tests. Currently, a large number of tests increase gas medium density to increase the test Reynolds number. In the data obtained by this test technology, the Reynolds number is difficult to separate as it is coupled with the static aeroelastic effect of the model, bringing difficulties in data correction and application. To solve the coupling problem between the Reynolds number and the static aeroelastic deformation of the model in the Reynolds number effect wind tunnel test, this paper uses a combination of fluid numerical calculation and static aeroelastic coupling calculation to separately study the influence of the Reynolds number and static aeroelastic deformation on the model aerodynamic coefficient. Then a Reynolds number/static aeroelastic numerical separation technology is developed, which can effectively predict the influence of Reynolds number and static aeroelastic deformation on aerodynamic characteristics. Particularly, when the aerodynamic coefficient of the rigid model changes approximately linearly with the logarithm of the Reynolds number, a reasonable aerodynamic coefficient separation result is obtained.

Key words: Reynolds number effect, static aeroelastic deformation, coupling, separation method, CRM-WBT0 model

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