化工学报 ›› 2017, Vol. 68 ›› Issue (S1): 260-265.DOI: 10.11949/j.issn.0438-1157.20170541

• 流体力学与传递现象 • 上一篇    下一篇

圆柱状金属泡沫多孔前置体的气动热效应分析

李振环1, 孙海锋1, 张晓晨1,2, 夏新林1, 陈学1   

  1. 1. 哈尔滨工业大学能源科学与工程学院, 黑龙江 哈尔滨 150001;
    2. 北京临近空间飞行器系统工程研究所, 北京 100076
  • 收稿日期:2017-05-03 修回日期:2017-05-05 出版日期:2017-08-31 发布日期:2017-08-31
  • 通讯作者: 夏新林,xiaxl@hit.edu.cn
  • 基金资助:

    国家自然科学基金项目(51536001)。

Analysis of aero-heating effect inside frontal cylindrical metal foam

LI Zhenhuan1, SUN Haifeng1, ZHANG Xiaochen1,2, XIA Xinlin1, CHEN Xue1   

  1. 1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China;
    2. Beijing Institute of Near Space Vehicle's Systems Engineering, Beijing 100076, China
  • Received:2017-05-03 Revised:2017-05-05 Online:2017-08-31 Published:2017-08-31
  • Supported by:

    supported by the National Natural Science Foundation of China (51536001).

摘要:

以超声速气流冲击轴线与来流方向相一致的带有金属泡沫多孔前置体的实体圆柱为研究对象,采用连续尺度单区域法数值模拟泡沫多孔前置体内部的流场及气动热效应。多孔域阻力特性基于分布阻力法加入,选用局部非热平衡模型,考虑流体相与固体相的传热温差,并通过Rosseland扩散模型加入固体相的辐射热效应。研究发现,在模拟气流工况下前置有一定长度的柱状泡沫多孔材料可显著降低模型激波阻力和前缘气动热效应,此外相对于气动压缩效应对温度场的影响黏性耗散效应较小。

关键词: 泡沫多孔材料, 超声速绕流, 流场, 气动热效应, 激波阻力, 模型, 数值分析

Abstract:

Supersonic flow around streamwise-aligned solid cylinder with cylindrical open-cell metal foam insert front is investigated. The fluid field and aero-heating effect inside frontal foam porous region is numerically simulated by single domain method at continuum-scale. The drag characteristic of porous region is added by distributed resistance method. The heat transfer temperature difference between solid and fluid phase is taken into account by employing local thermal non-equilibrium model and the radiation heat transfer of solid phase is calculated using Rosseland approximation. It is found that the installation of certain length of cylindrical open-cell foam in front of solid cylinder can reduce the wave drag and frontal aero-heating effect of the model considerably under simulating airflow condition. Compared with aerodynamic compression effect,the influence of viscous dissipation effect on temperature field is small.

Key words: open-cell foam, supersonic flow around, fluid field, aero-heating effect, wave drag, model, numerical analysis

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