Experimental study of heat transfer effects due to impinging slot jets confined by inclined plates

IF 1.7 4区工程技术 Q3 THERMODYNAMICS

Heat Transfer Research Pub Date : 2024-06-01 DOI:10.1615/heattransres.2024053359

Haluk Keleş, Yücel Özmen

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Abstract

In this study, the effects of heat transfer in turbulent flow fields of impinging slot jet confined by inclined plates were investigated experimentally. Temperature distributions on the impingement plates were obtained with thermal camera. Temperature measurements were carried out on the impingement plate in four different impinging slot jet flow setups confined by plates with inclination angles of θ = 0°, 15°, 30° and 45°, with an inter-plate spacing of 0.5 ≤ H/W ≤ 6 and a Reynolds number range of 10000 ≤ Re ≤ 30000. The effects of confinement plate inclination angle, intervals among plates and Reynolds number on the Nusselt distributions of the impingement plates were examined. It was observed that Nusselt values increased with increasing Reynolds number and decreased with increasing intervals among plates. There are secondary top points in the Nusselt distributions on the impingement plate for low inclined confinement plates (θ=0° and θ=15°) and low inter-plate spacings (H/W=0. 5 and H/W=1), while there is an increase in the Nusselt numbers at the ends of the impingement plate for high inclined confinement plates (θ=30° and θ=45°) and low inter-plate spacings (H/W=0.5 and H/W=1).

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倾斜板限制的撞击槽射流的传热效应实验研究

本研究通过实验研究了倾斜板限制的撞击槽射流在湍流流场中的传热效果。通过热像仪获得了撞击板上的温度分布。在四种不同的撞击板倾角为θ = 0°、15°、30°和 45°的撞击槽射流设置中，对撞击板进行了温度测量，撞击板间距为 0.5 ≤ H/W ≤ 6，雷诺数范围为 10000 ≤ Re ≤ 30000。研究了约束板倾角、板间间隔和雷诺数对撞击板努塞尔特分布的影响。结果表明，随着雷诺数的增加，努塞尔特值增加，而随着板间间隔的增加，努塞尔特值减小。在低倾角约束板（θ=0° 和 θ=15°）和低板间距（H/W=0. 5 和 H/W=1）的情况下，撞击板上的努塞尔特分布存在次顶点，而在高倾角约束板（θ=30° 和 θ=45°）和低板间距（H/W=0.5 和 H/W=1）的情况下，撞击板两端的努塞尔特数有所增加。

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来源期刊

Heat Transfer Research 工程技术-热力学

CiteScore

3.10

自引率

23.50%

发文量

102

审稿时长

13.2 months

期刊介绍： Heat Transfer Research (ISSN1064-2285) presents archived theoretical, applied, and experimental papers selected globally. Selected papers from technical conference proceedings and academic laboratory reports are also published. Papers are selected and reviewed by a group of expert associate editors, guided by a distinguished advisory board, and represent the best of current work in the field. Heat Transfer Research is published under an exclusive license to Begell House, Inc., in full compliance with the International Copyright Convention. Subjects covered in Heat Transfer Research encompass the entire field of heat transfer and relevant areas of fluid dynamics, including conduction, convection and radiation, phase change phenomena including boiling and solidification, heat exchanger design and testing, heat transfer in nuclear reactors, mass transfer, geothermal heat recovery, multi-scale heat transfer, heat and mass transfer in alternative energy systems, and thermophysical properties of materials.