[1]王珊珊,董毓利,段进涛,等.高雷诺数下二维长方形截面柱绕流数值模拟[J].华侨大学学报(自然科学版),2018,39(1):24-30.[doi:10.11830/ISSN.1000-5013.201703124]
　WANG Shanshan,DONG Yuli,DUAN Jintao,et al.Numerical Simulation of Flow Around Two Dimensional Rectangular Column at High Reynolds Number[J].Journal of Huaqiao University(Natural Science),2018,39(1):24-30.[doi:10.11830/ISSN.1000-5013.201703124]
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高雷诺数下二维长方形截面柱绕流数值模拟()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第39卷
期数:
2018年第1期
页码:
24-30
栏目:
出版日期:
2018-01-17

文章信息/Info

Title:
Numerical Simulation of Flow Around Two Dimensional Rectangular Column at High Reynolds Number
文章编号:
1000-5013(2018)01-0024-07
作者:
王珊珊;  董毓利;  段进涛;  王冬晔
华侨大学 土木工程学院, 福建 厦门 361021
Author(s):
WANG Shanshan;  DONG Yuli;  DUAN Jintao;  WANG Dongye
College of Civil Engineering, Huaqiao University, Xiamen 361021, China
关键词:
长方形截面柱;  高雷诺数;  气动特性;  Fluent软件;  数值模拟
Keywords:
rectangular column;  high reynolds number;  aerodynamic characteristics;  Fluent software;  numerical simulation
分类号:
O357
DOI:
10.11830/ISSN.1000-5013.201703124
文献标志码:
A
摘要:
为了研究高雷诺数下长方形截面柱绕流特性,基于Fluent软件对宽高比分别为2,3,4的二维长方形截面柱绕流开展数值模拟,并考虑角部修正对长方形截面柱的绕流特性的影响.采用Realizable k-ε模型结合标准壁面函数求解长方形截面柱的绕流,研究宽高比分别为2,3,4的长方形截面柱在不同风向角α和不同雷诺数的条件下,阻力系数CD、斯托哈数St的变化规律.研究结果表明:一定雷诺数范围内,方向角为0°时,CD,St随着雷诺数的增加而增加,随后基本保持不变;在相同雷诺数下,宽高比增大,CD减小,St增大;在高雷诺数条件下,随着风向角α的增加,CD出现先减小后增大的现象,而St与之相反.
Abstract:
In order to study the flow characteristics of rectangular column under high Reynolds number, the numerical simulation of the flow around two dimensional(2D)rectangular column with the aspect ratio of 2, 3 and 4 is carried out based on the Fluent software, considering the influence of the angle correction on the flow characteristics of 2D rectangular column. The Realizable k-ε model combined with the standard wall function is used to solve the flow around 2D rectangular column, the drag coefficient CD, Strouhal number St of 2D rectangular column with the aspect ratio of 2, 3 and 4 are investigated under various wind angles and various Reynolds numbers. The research results show that, within a range of Reynolds number, CD and St increase with the increase of the Reynolds number at 0°wind angle, and then basically remain unchanged. Under the same Reynolds number, with the increase of the aspect ratio, CD decreases, while St increases. At high Reynolds number, with the increase of wind angles α, CD decreases initially, and then increases, but St increases initially, and then decreases.

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备注/Memo

备注/Memo:
收稿日期: 2017-03-09
通信作者: 董毓利(1965-),男,教授,博士后,主要从事结构抗火的研究.E-mail:DongYL@hqu.edu.cn.
基金项目: 国家自然科学基金资助项目(51278027)
更新日期/Last Update: 2018-01-20