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3rd Thermal and Fluids Engineering Conference (TFEC)

ISSN: 2379-1748

EXPERIMENTAL AND NUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT IN A PIPE PARTIALLY OR TOTALLY FILLED WITH A POROUS MATERIAL

Mahboobe Mahdavi
Gannon University, Erie, PA16541, USA

Saeed Tiari
Gannon University, Erie, PA 16541, USA

Ali Heidari
Amirkabir University of Technology, Tehran 15875-4413, Iran

Majid Saffar Avval
Mechanical Engineering Department, Amirkabir University of Technology, 424 Hafez Avenue, P.O. Box 15875-4413, Tehran, Iran

DOI: 10.1615/TFEC2018.prm.022071
pages 1547-1551


KEY WORDS: heat transfer enhancement, pipe, porous medium, experimental, numerical modeling

Abstract

In the present work, the hydrodynamics and heat transfer characteristics of water flow through a pipe with porous medium insert at the core were investigated numerically and experimentally. The pipe wall was subjected to a constant and uniform heat flux. The cylindrical porous medium was fabricated from copper wires woven together. The effects of various parameters such as Reynolds number, porous medium thickness, Prandtl number, thermal conductivity ratio, and inertial coefficient were studied on the enhanced heat transfer rate. The results were compared to the case with no porous insert. It was concluded that in laminar regime, higher Reynolds numbers results in more enhanced heat transfer, however, the dramatic increase in pressure drop is not desired. The results also showed that, as the thickness of porous medium increases, the effects of inertial coefficient and thermal conductivity ratio become more noticeable. However, the effect of Prandtl number was less significant especially for porous insert with radius close to the pipe radius.

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