Simulation of a confined and a free sweeping air jet impingement cooling from a fluidic oscillator

被引：10
作者：
Abdelmaksoud, Ramy [1 ,2 ]
Wang, Ting [1 ]
机构：
[1] Univ New Orleans, Energy Convers & Conservat Ctr, New Orleans, LA 70148 USA
[2] Adv Cooling Technol Inc, Lancaster, PA 17601 USA
来源：
INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2023年 / 193卷
关键词：
Sweeping jet; Fluidic oscillator; Impingement jet cooling; ACTIVE FLOW-CONTROL; HEAT-TRANSFER;
D O I：
10.1016/j.ijthermalsci.2023.108488
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this paper, the fluid flow behavior and cooling characteristics of a sweeping impingement jet were investigated. Also, the difference between free and confined impingement schemes was investigated. In addition, the conventional approach for the purpose of significantly reducing computational time by using a confined domain with a slip upper wall instead of an unconfined domain was evaluated. A 2D unsteady Reynolds averaged NavierStokes (URANS) simulation accompanied with the k-& omega; SST turbulence model is used in this study. The study has been conducted for a target wall with a constant heat flux of 3000 W/m2, jet-to-wall distance of 4, and a jet Reynolds number of 2500. The results show that the overall average cooling performance of the sweeping jet is better in the confined impingement scheme compared to that of the steady jet, while the steady jet is slightly better in the unconfined sweeping impingement scheme. Using a confined scheme with a slip upper wall does not reveal the complete thermal and flow behaviors, and the wall heat transfer distribution is very different from the unconfined domain.
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页数：12
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