Heat Transfer and Flow Structurein a Latticework Duct With Different Sidewalls

被引：8

作者：

Du, Wei ^{[1
,2
]}

Luo, Lei ^{[1
]}

Wang, Songtao ^{[1
]}

Liu, Jian ^{[2
]}

Sunden, Bengt ^{[2
]}

机构：

[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Peoples R China

[2] Lund Univ, Dept Energy Sci, Div Heat Transfer, S-22100 Lund, Sweden

来源：

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME | 2019年 / 141卷 / 12期

基金：

中国博士后科学基金;

关键词：

sidewall; latticework duct; turning-impingement-turning; helical flow; bypass flow;

D O I：

10.1115/1.4044826

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Heat transfer characteristics in a latticework duct with various sidewalls are numerically investigated. The crossing angle is 90deg and the number of subchannels is eleven on both the pressure side and suction side for each latticework duct. The thickness of the ribs is 8mm and the distance between adjacent ribs is 24mm. The investigation is conducted for various Reynolds numbers (11,000 to 55,000) and six different sidewalls. Flow structure, pressure drop, and heat transfer characteristics are analyzed. Results revealed that the sidewall has significant effects on heat transfer and flow structure. The triangle-shaped sidewall provides the highest Nusselt number accompanied by the highest friction factor. The sidewall with a slot shows the lowest friction factor and Nusselt number. An increased slot width decreased the Nusselt number and friction factor simultaneously.

引用

页数：8

共 21 条

[1] Latticework (vortex) cooling effectiveness: Rotating channel experiments [J].

Acharya, S ;

Zhou, F ;

Lagrone, J ;

Mahmood, G ;

Bunker, RS .

JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME, 2005, 127 (03) :471-478

[2] Effect of sidewall slots and pin fins on the performance of latticework cooling channel for turbine blades [J].

Bu, Shi ;

Yang, Lianfeng ;

Qiu, Hanghai ;

Luan, Yigang ;

Sun, Haiou .

APPLIED THERMAL ENGINEERING, 2017, 117 :275-288

[3] Research on the thermal performance of matrix cooling channel with response surface methodology [J].

Bu, Shi ;

Yang, Zipeng ;

Zhang, Wenbin ;

Liu, Huannan ;

Sun, Haiou .

APPLIED THERMAL ENGINEERING, 2016, 109 :75-86

[4]

Bunker R.S, 2004, TURBO EXPO 2004, V3, P909, DOI [10.1115/GT2004-54157, DOI 10.1115/GT2004-54157]

[5]

Carcasci C., 2015, Am. Soc. Mech. Eng., V56710, DOI [10.1115/GT2015-42594, DOI 10.1115/GT2015-42594]

[6] Experimental Study on Heat Transfer and Flow Resistance in Improved Latticework Cooling Channels [J].

Deng, Hongwu ;

Wang, Kai ;

Zhu, Jianqin ;

Pan, Wenyan .

JOURNAL OF THERMAL SCIENCE, 2013, 22 (03) :250-256

[7] Heat transfer and flow structure in a detached latticework duct [J].

Du, Wei ;

Luo, Lei ;

Wang, Songtao ;

Liu, Jian ;

Sunden, Bengt .

APPLIED THERMAL ENGINEERING, 2019, 155 :24-39

[8] Flow structure and heat transfer characteristics in a 90-deg turned pin fined duct with different dimple/protrusion depths [J].

Du, Wei ;

Luo, Lei ;

Wang, Songtao ;

Zhang, Xinghong .

APPLIED THERMAL ENGINEERING, 2019, 146 :826-842

[9] Effect of the dimple location and rotating number on the heat transfer and flow structure in a pin finned channel [J].

Du, Wei ;

Luo, Lei ;

Wang, Songtao ;

Zhang, Xinghong .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2018, 127 :111-129

[10]

Gillespie D.R., 2000, ASME TURBO EXPO 2000

← 1 2 3 →