Title: Parametric study of nanofluid jet impingement cooling of protruding heaters with porous medium
Authors: Chinmayee Behera
Addresses: Department of Mechanical Engineering, NIT Durgapur, Durgapur-713209, West Bengal, India
Abstract: In the present work fluid flow and thermal behaviour of a nanofluid jet in connection with forced convection cooling of an array of discrete protruded heaters fixed on an impingement wall and embedded in a porous layer has been investigated for various channel heights (H/L), Darcy numbers (Da), porosities (ε) and nanoparticle volume fractions (Φ). Maximum increment in Nuavg has been found to be 15.7% along the first heater for Da = 10−4. On the contrary, the minimum value of the increment of 0.3% is observed along the second heater at Da = 10−5 in both cases for a fixed value of Φ = 6%. However, the effect of variation in porosity variation on enhancement of heat transfer is not discernible except on the fourth heater where increment of Nuavg is 33.3% at ε = 0.5 and Φ = 6%.
Keywords: nanoparticle; impinging jet; porous layer; discrete heaters; LTE model; single phase.
Progress in Computational Fluid Dynamics, An International Journal, 2021 Vol.21 No.6, pp.378 - 391
Accepted: 24 Nov 2020
Published online: 17 Nov 2021 *