多孔介质填充圆管内传热的数值研究

Q3 Engineering Pollack Periodica Pub Date : 2023-10-04 DOI:10.1556/606.2023.00869

Firas F. Qader, Barhm Mohamad, Adnan M. Hussein, Suad H. Danook

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引用次数: 0

摘要

摘要研究了水平加热恒热流密度圆管内的强制对流换热。多孔介质采用1毫米和3毫米的不锈钢球(孔隙率分别为0.3690和0.3912)。根据管径，雷诺数从3200到6500不等，热流密度为6250和12500 W m−2。ANSYS Fluent模拟了一根直径51.4 mm、厚5mm、长304 mm的不锈钢管。结果显示湍流和涡流的形成增加。分析表明，随着雷诺数的增加，对流换热系数、压降和努塞尔数增大。Nusselt数随球径增加而增加。孔隙度增加6%，压降降低84.4%。努塞尔数增加46.7%(雷诺数3200 ~ 6500)和4.36%(热流密度6250 ~ 12500 W m−2)。

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Numerical study of heat transfer in circular pipe filled with porous medium

Abstract Forced convection heat transfer was studied in a horizontally heated circular pipe with constant heat flux. Porous medium was created using 1 and 3 mm stainless-steel balls (porosity: 0.3690 and 0.3912). Reynolds numbers ranged from 3,200 to 6,500 based on pipe diameter, with heat flux rates of 6,250 and 12,500 W m −2 . ANSYS Fluent simulated a 51.4 mm diameter, 5 mm thick, 304 mm long stainless-steel pipe. Results showed increased turbulence and eddy formation. Analysis revealed higher convective heat transfer coefficient, pressure drop, and Nusselt number with increasing Reynolds number. Nusselt number also increased with 1–3 mm ball diameter. 6% porosity increase reduced pressure drop by 84.4%. Nusselt number rose by 46.7% (Reynolds 3,200–6,500) and 4.36% (heat flux 6,250–12,500 W m −2 ).

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来源期刊

Pollack Periodica Engineering-Civil and Structural Engineering

CiteScore

1.50

自引率

0.00%

发文量

期刊介绍： Pollack Periodica is an interdisciplinary, peer-reviewed journal that provides an international forum for the presentation, discussion and dissemination of the latest advances and developments in engineering and informatics. Pollack Periodica invites papers reporting new research and applications from a wide range of discipline, including civil, mechanical, electrical, environmental, earthquake, material and information engineering. The journal aims at reaching a wider audience, not only researchers, but also those likely to be most affected by research results, for example designers, fabricators, specialists, developers, computer scientists managers in academic, governmental and industrial communities.