THE EFFECTS OF NUSSELT, REYNOLDS NUMBER, AND PRESSURE DROP ON THE THERMAL PERFORMANCE OF PIERCED PIN FINS

IF 1.1 Q4 THERMODYNAMICS

Frontiers in Heat and Mass Transfer Pub Date : 2022-09-06 DOI:10.5098/hmt.19.8

Wadhah H. Al Doori

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Abstract

Perforated fin forced convection heat transfer is the primary focus of this investigation. The purpose of this research is to see if perforated pin fins can help with heat transmission in the devices. Each pin's perforation diameter and number of holes are rigorously examined. The Nusselt numbers for perforated pins are 47 percent higher than those for solid pins, according to the study, and this number raises as the number of holes increases. The pressure drop is reduced by 19% when perforated pins are used instead of solid pins. Heat transmission in a round-holed pin fin was studied using forced convection in tests. Perforations in the shape of circles were among the options available. For the sake of this investigation, a number of perforations were made. For example, all of the fins and readings have one to four perforated holes. Perforated fins can promote heat transfer because of the improved Nusselt number, increased convective heat transfer coefficient, and decreased pressure gradient provided by this model is 40% smaller and up to 85% more effective at transferring heat. As a result, eddy currents are lessened.

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努赛尔、雷诺数和压降对穿针翅热性能的影响

穿孔翅片强制对流换热是本研究的主要焦点。这项研究的目的是看看是否穿孔针鳍可以帮助传热的设备。每个销的穿孔直径和孔数都经过严格检查。研究表明，穿孔针的努塞尔数比实心针高47%，而且随着孔数的增加，努塞尔数也会增加。当使用穿孔销代替实心销时，压降降低了19%。采用强制对流的方法研究了圆孔针翅的传热特性。圆圈形状的穿孔是可用的选择之一。为了这次调查，打了一些孔。例如，所有的鳍片和读数都有一到四个穿孔孔。穿孔翅片可以促进换热，因为该模型提高了努塞尔数，增加了对流换热系数，降低了压力梯度，传热效率提高了40%，传热效率提高了85%。结果，涡流减少了。

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

Frontiers in Heat and Mass Transfer THERMODYNAMICS-

CiteScore

2.50

自引率

61.10%

发文量

审稿时长

10 weeks

期刊介绍： Frontiers in Heat and Mass Transfer is a free-access and peer-reviewed online journal that provides a central vehicle for the exchange of basic ideas in heat and mass transfer between researchers and engineers around the globe. It disseminates information of permanent interest in the area of heat and mass transfer. Theory and fundamental research in heat and mass transfer, numerical simulations and algorithms, experimental techniques and measurements as applied to all kinds of current and emerging problems are welcome. Contributions to the journal consist of original research on heat and mass transfer in equipment, thermal systems, thermodynamic processes, nanotechnology, biotechnology, information technology, energy and power applications, as well as security and related topics.