Heat transfer and flow around curved corner cylinder: effect of attack angle

被引：4

作者：

Abdelhamid, Talaat ^{[1
]}

Rahma, Ahmed G. ^{[1
,2
]}

Alam, Md. Mahbub ^{[3
]}

Chen, Rongliang ^{[4
]}

Islam, Md. ^{[5
]}

Zhou, Qiang ^{[6
]}

Zhu, Hongjun ^{[7
]}

机构：

[1] Menoufia Univ, Fac Elect Engn, Dept Phys & Engn Math, Menoufia 32952, Egypt

[2] Univ Strasbourg, Dept Phys & Engn, 4 Rue Blaise Pascal, F-67081 Strasbourg, France

[3] Harbin Inst Technol Shenzhen, Ctr Turbulence Control, Shenzhen 518055, Peoples R China

[4] Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China

[5] Khalifa Univ Sci & Technol, Mech Engn Dept, Abu Dhabi, U Arab Emirates

[6] Southwest Jiaotong Univ, Res Ctr Wind Engn, Chengdu 610031, Peoples R China

[7] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploitat, Chengdu 610500, Peoples R China

来源：

SN APPLIED SCIENCES | 2023年 / 5卷 / 06期

关键词：

Heat transfer; Vorticity dynamics; Fluid forces; Laminar flow; Curved corner; REYNOLDS-NUMBER; SQUARE CYLINDER; FLUID-FLOW; VORTEX; CONVECTION; WAKES;

D O I：

10.1007/s42452-023-05377-w

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The aim of this study is to investigate the fluid flow structure and heat transfer from an isothermal cylinder with a curved corner radius ratio (r/R) of 0.5, and attack angle (alpha) is varied between 0 degrees <= alpha <= 45 degrees. The cylinder is subjected to airflow at a Reynolds number (Re) = 180 and Prandtl number (Pr) = 0.7. This study focuses on the effect of alpha on the fluid forces, Strouhal number, Nusselt number, and flow structure, and wake bubble size. The sensitivity of the time-mean drag and lift forces is investigated to alpha, and they appear to be minimum at critical alpha of 5 degrees and 12 degrees, respectively. The increase of alpha from 0 to 45 degrees results in about 12.9% enhancement in the heat transfer from the cylinder.

引用

页数：17

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