波状粗糙壁模型流动的壁面热流和阻力关联关系的数值研究

doi:10.7523/j.issn.2095-6134.2019.06.003

中国科学院大学学报 ›› 2019, Vol. 36 ›› Issue (6): 736-744.DOI: 10.7523/j.issn.2095-6134.2019.06.003

波状粗糙壁模型流动的壁面热流和阻力关联关系的数值研究

李玉川, 鲍麟

中国科学院大学工程科学学院, 北京 100049

收稿日期:2018-05-09 修回日期:2018-05-28 发布日期:2019-11-15
通讯作者: 鲍麟
基金资助:
国家自然科学基金（11572319）资助

Numerical study of the relationship between heat flux and drag in the flow on wavy rough-wall

LI Yuchuan, BAO Lin

School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2018-05-09 Revised:2018-05-28 Published:2019-11-15

摘要/Abstract

摘要： 微粗糙壁面上高速气流的流动和传热特性是当前关注的问题。以半无穷长正弦波状板作为微粗糙壁面模型，使用OpenFOAM程序，数值研究不同来流参数和不同波幅的正弦波状板流动。结果表明，在波状壁流动中，壁面热流系数C_Q与总阻力系数C_D呈现出直接关联，C_Q/C_D是表征粗糙壁流动与传热特性的关键参数。对于附着型流动，C_Q/C_D仅取决于粗糙度与边界层厚度之比，即等效粗糙度h；而流动产生分离后，C_Q/C_D不再随粗糙度变化，仅与波状板相似变化后的位置参量有关。

关键词: 波状粗糙壁, 高速流, 热流-阻力系数比

Abstract: This study focuses on the flow and heat transfer characteristics of high-speed airflow over the rough-wall which has periodic roughness and small amplitude. By using the OpenFOAM program, flows on the semi-infinite sinusoidal wavy plates under different inflow conditions are numerically studied. The results show that there is a direct correlation between the wall heat flux coefficient C_Q and the total drag coefficient C_D. For the attached flow, C_Q/C_D only depends on the equivalent roughness h, which is the ratio of the roughness to the thickness of the boundary layer. When the flow separation occurs, C_Q/C_D no longer changes with roughness and only depends on the position variable x, which is defined by the similar transformation.

Key words: wavy rough wall, high-speed flow, ratio of heat flux coefficient to drag coefficient

中图分类号:

O354.4

李玉川, 鲍麟. 波状粗糙壁模型流动的壁面热流和阻力关联关系的数值研究[J]. 中国科学院大学学报, 2019, 36(6): 736-744.

LI Yuchuan, BAO Lin. Numerical study of the relationship between heat flux and drag in the flow on wavy rough-wall[J]. , 2019, 36(6): 736-744.

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波状粗糙壁模型流动的壁面热流和阻力关联关系的数值研究

Numerical study of the relationship between heat flux and drag in the flow on wavy rough-wall

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