Analysis of the forced convection of two-phase Ferro-nanofluid flow in a completely porous microchannel containing rotating cylinders
Open Access
- 8 September 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 11 (1), 1-18
- https://doi.org/10.1038/s41598-021-97152-3
Abstract
In the present work, the forced convection of nanofluid flow in a microchannel containing rotating cylinders is investigated in different geometries. The heat flux applied to the microchannel wall is 10,000 W m−2. The effects of Reynolds number, the volume fraction of nanoparticles, and the porosity percentage of the porous medium are investigated on the flow fields, temperature, and heat transfer rate. Reynolds number values vary from Re = 250–1000, non-dimensional rotational velocities 1 and 2, respectively, and volume fraction of nanoparticles 0–2%. The results show that increasing the velocity of rotating cylinders increases the heat transfer; also, increasing the Reynolds number and volume fraction of nanoparticles increases the heat transfer, pressure drop, and Cf,ave. By comparing the porosity percentages with each other, it is concluded that due to the greater contact of the nanofluid with the porous medium and the creation of higher velocity gradients, the porosity percentage is 45% and the values of are 90% higher than the porosity percentage. Comparing porosity percentages with each other, at porosity percentage 90% is greater than at porosity percentage 45%. On the other hand, increasing the Reynolds number reduces the entropy generation due to heat transfer and increases the entropy generation due to friction. Increasing the volume fraction of nanoparticles increases the entropy generations due to heat transfer and friction.This publication has 38 references indexed in Scilit:
- Variable conductivity in forced convection for a tube filled with porous media: A perturbation solutionAin Shams Engineering Journal, 2018
- Analytical solution of forced convective heat transfer in parallel-plate channel partially filled with metallic foamsInternational Journal of Heat and Mass Transfer, 2016
- On the thermally developing forced convection through a porous material under the local thermal non-equilibrium condition: An analytical studyInternational Journal of Heat and Mass Transfer, 2016
- Numerical investigation of forced convection heat transfer through microchannels with non-Newtonian nanofluidsInternational Journal of Thermal Sciences, 2014
- Characteristics of heat transfer and fluid flow in microtube and microchannel using conventional fluids and nanofluids: A reviewRenewable and Sustainable Energy Reviews, 2013
- Modeling of forced convective heat transfer of a non-Newtonian nanofluid in the horizontal tube under constant heat flux with computational fluid dynamicsInternational Communications in Heat and Mass Transfer, 2012
- Eulerian–Eulerian two-phase numerical simulation of nanofluid laminar forced convection in a microchannelInternational Journal of Heat and Fluid Flow, 2011
- Numerical study of turbulent forced convection flow of nanofluids in a long horizontal duct considering variable propertiesInternational Communications in Heat and Mass Transfer, 2010
- Constant wall heat flux boundary conditions in porous media under local thermal non-equilibrium conditionsInternational Journal of Heat and Mass Transfer, 2002
- High-performance heat sinking for VLSIIEEE Electron Device Letters, 1981