Flow and Heat Transfer in Nanofluid Flow through a Cylinder Filled with Foam Porous Medium under Radial Injection

Abstract:

The Darcy flow and heat convection in nanofluid through a cylinder filled with a foam porous medium subject to local non-thermal equilibrium (LNTE) condition and uniform radial injection on the outer wall of the cylinder is studied. The momentum and two-energy equations are solved by differential transformation method (DTM) in the form of stream function using similarity variables. The effect on flow and heat transfer of different types of nanofluids and involved physical parameters Prandtl number Pr, Reylond number Re, Darcy number Da, Biot number Bi, Ratio of thermal conductivities Rk, porosity parameter ε, solid volume fraction parameter φ and shape of nanoparticles are analyzed through graphs. The viscous drag force and heat convection at the wall of the cylinder is calculated in terms of non-dimensional skin-friction coefficient and Nusselt number respectively. Decreasing the porosity of foam porous medium causes increment in magnitude of heat transfer rate for both the phases. Spherical shape of nanoparticles transfers more heat in comparison of cylindrical shape nanoparticles. Amongst the nanofluid H₂O-Ag, H₂O-Cu and H₂O-Al₂O₃ the magnitude of heat transfer for fluid phase Nu_f is lowest for nanofluid H₂O-Al₂O₃.

• Periodical: Defect and Diffusion Forum (Volume 387)
• Pages: 166-181
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.387.166
• Online since: September 2018
• Authors: Mukesh Kumar Sharma, Choudhary Manjeet, Oluwole Daniel Makinde
• Keywords: Darcy, DTM, Local Non-Thermal Equilibrium (LNTE) Condition, Nanofluid, Steady

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