CFD Analysis of Multi-jet Air Impingement on Flat Plate

被引：0

作者：

Chougule, N. K. ^{[1
]}

Parishwad, G., V ^{[1
]}

Gore, P. R. ^{[3
]}

Pagnis, S. ^{[2
]}

Sapali, S. N. ^{[1
]}

机构：

[1] Coll Engn, Dept Mech Engn, Pune, Maharashtra, India

[2] Tata Technol, Europe, Luton, Beds, England

[3] EMERSON Network Power, Thana, MS, India

来源：

WORLD CONGRESS ON ENGINEERING, WCE 2011, VOL III | 2011年

关键词：

CFD; heat transfer enhancement; multi jet impingement; turbulence model; HEAT-TRANSFER;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

Jet impingement is one of the intensive cooling methods to cool hot objects in various industrial processes. The fluid flow and heat transfer characteristics of multi air jet array impinging on a flat plate are investigated both experimentally and numerically. It is found that Shear-Stress Transport (SST) k-w turbulence model can give the better predictions of fluid flow and heat transfer properties for solving such types of problems. Using SST k-w model, the effects of jet Reynolds number (Re), target spacing-to-jet diameter ratio (Z/d) on average Nusselt number (Nu(a)) of the target plate are examined. These numerical results are compared with the available benchmark experimental data. It is found that Nu(a) increases from 40 to 50.1 by increasing Reynolds number from 7000 to 11000 at Z/d =6. By increasing Z/d ratio from 6 to 10, Nu(a) decreases from 50.1 to 36.41 at Re11000. It is also observed that in multi-jet impingement, spacing between the air jets play important role. A value of nozzle pith of 3 to 5 was recommended to reduce adjacent jet interference.

引用

页码：2431 / 2435

页数：5

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