Flow and Heat Transfer Characteristics of Staggered Cylinders

IF 1.5 4区工程技术 Q3 MECHANICS

Journal of Mechanics Pub Date : 2023-07-28 DOI:10.1093/jom/ufad014

L. Hsu, P. Chou

引用次数: 0

Abstract

Determining how the flow structure affects the heat transfer of a staggered cylindrical array was one of the objectives of this numerical study. The major flow patterns and the corresponding characteristics of heat transfer were investigated, including Shear Layer Reattachment (SLR), Induced Separation (IS), Vortex Pairing and Enveloping (VPE), Vortex Impingement (VI), and Synchronized Vortex Shedding (SVS). As the stagger angle is larger than 35°, the mean Nusselt numbers of array systems are larger than that of a single cylinder. The magnitude of Nu/Cd is suggested as a parameter to measure the efficiency of the heat transfer for an array system.

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交错圆柱的流动和传热特性

确定流动结构如何影响交错圆柱阵列的传热是本数值研究的目标之一。研究了剪切层再附着(SLR)、诱导分离(IS)、涡对包络(VPE)、涡撞击(VI)和同步涡脱落(SVS)等主要流动模式及其传热特性。当交错角大于35°时，阵列系统的平均努塞尔数大于单个圆柱体的平均努塞尔数。建议用Nu/Cd的大小作为衡量阵列系统传热效率的参数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Mechanics 物理-力学

CiteScore

3.20

自引率

11.80%

发文量

审稿时长

6 months

期刊介绍： The objective of the Journal of Mechanics is to provide an international forum to foster exchange of ideas among mechanics communities in different parts of world. The Journal of Mechanics publishes original research in all fields of theoretical and applied mechanics. The Journal especially welcomes papers that are related to recent technological advances. The contributions, which may be analytical, experimental or numerical, should be of significance to the progress of mechanics. Papers which are merely illustrations of established principles and procedures will generally not be accepted. Reports that are of technical interest are published as short articles. Review articles are published only by invitation.