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research-article

Forced convection in a bidisperse porous medium embedded in a circular pipe

[+] Author and Article Information
Keyong Wang

School of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
k.y.wang@126.com

Kambiz Vafai

Department of Mechanical Engineering, University of California, Riverside, CA 92521, USA
vafai@engr.ucr.edu

Peichao Li

School of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
wiselee18@163.com

Hao Cen

Office of Campus Construction, Tianjin Foreign Studies University, Tianjin 300204, China
37592360@qq.com

1Corresponding author.

ASME doi:10.1115/1.4036574 History: Received January 17, 2017; Revised March 08, 2017

Abstract

Compared to the regular (monodisperse) porous medium (MDPM) with one porosity scale, the bidisperse porous medium (BDPM) has two porosity scales, which may enhance the heat transfer capability. This work investigates the forced convective heat transport through a circular pipe filled with a BDPM. The two-velocity two-temperature model is utilized to describe the flow and temperature fields for both the fracture phase (macropores) and the porous phase (micropores). The bidispersion effect is taken into account by altering the permeability of the porous phase in the medium. Analytical solutions of the velocities and temperatures for both phases are derived under the constant wall heat flux boundary condition. The local Nusselt number and heat transfer performance are also developed to investigate how the bidispersivity affects the thermal characteristics over a wide range of parameter space.

Copyright (c) 2017 by ASME
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