Heat Transfer Enhancement by Jet Impingement on a Flat Surface with Detached-Ribs under Cross-flow Conditions

被引：20
|
作者：
Allauddin, U. [1 ]
Uddin, N. [1 ]
Weigand, B. [2 ]
机构：
[1] NED Univ Engn & Technol, Computat Thermofluid Lab, Dept Mech Engn, Karachi 75270, Pakistan
[2] Univ Stuttgart, Inst Aerosp Thermodynam, D-70174 Stuttgart, Germany
来源：
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS | 2013年 / 63卷 / 12期
关键词：
RECTANGULAR CHANNELS; IMPINGING JET; CIRCULAR JET; PLATE; FOAM; CONVECTION; FLUID;
D O I：
10.1080/10407782.2013.757155
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this article, the heat transfer augmentation on a flat surface with jet impingement on axisymmetric detached ribs is numerically investigated. Both single and multiple jet impingement with and without crossflow interaction is investigated. Numerical simulations are done using Reynold-averaged NavierStokes (RANS) equations with a shear stress transport (SST) model with the commercial CFD code ANSYS-CFX. The influence of jet Reynolds number (7000Re(j)78,000), blowing ratio (5.8M11.5), and jet-outlet-to-target wall distance (2H/D6) are examined. Results show that the heat transfer is enhanced on the target wall with detached ribs in single and multiple jet impingement at moderate crossflow speeds.
引用
收藏
页码：921 / 940
页数：20
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