Hybrid nanoparticles dispersion into water inside a porous wavy tank involving magnetic force
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Hybrid nanoparticles dispersion into water inside a porous wavy tank involving magnetic force M. Sheikholeslami1,2 • M. Barzegar Gerdroodbary1 • Ahmad Shafee3 • Iskander Tlili4,5 Received: 14 June 2019 / Accepted: 18 September 2019 Ó Akade´miai Kiado´, Budapest, Hungary 2019
Abstract In current article, porous domain modeling in the presence of radiation and Lorentz forces has been scrutinized. To get better performance, hybrid nanomaterial has been utilized. Final equations with help of non-Darcy model were solved via CVFEM. Outputs reveal that as permeability enhances, thinner boundary layer can be produced, and in existence of magnetic field, permeability has slight effect on Nuave. Lorentz forces keep a reverse link with Nuave and with rise of Da, it improves. Higher gradient in temperature can be achieved with rise of buoyancy forces. Keywords Darcy number Free convection Hybrid nanopowders Radiation Lorentz forces
Introduction Within the past years, sharp development in nanotechnology resulted in appearing new coolants named ‘nanofluids’ which are a new category of liquids including nanoscale particles from 1 to 100 nm. These nanoparticles are suspended in typical liquids. Such suspension in the basis liquid is one of the passive methods. The nanoparticles are typically metal or metal oxide improving the convection heat transfer as well as the thermal conduction factors leading to more conduction, as
& Iskander Tlili [email protected] M. Sheikholeslami [email protected] 1
Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Islamic Republic of Iran
2
Renewable Energy Systems and Nanofluid Applications in Heat Transfer Laboratory, Babol Noshirvani University of Technology, Babol, Islamic Republic of Iran
3
Public Authority of Applied Education and Training, Applied Science Department, College of Technological Studies, Shuwaikh, Kuwait
4
Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam
5
Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
the rate of basis fluids thermal conductivity is lower compared to solid particles [1–8]. A compressive thesis about topic of nanoparticle migration through a wavy system and in holes including wavy surfaces utilizing nanomaterial as operant fluids has been represented by Shenoy et al. [9] who investigated natural as well as combined convection phenomena in the holes with smooth walls. Additionally, they studied the heat transfer efficiency of such convections in the holes limited by vertical wavy walls. Ghalambaz et al. [10] demonstrated charging of hybrid material within an enclosure, and they involved buoyancy effect in their model. Numerically and empirically, flow style of nanomaterial stream in channel including various shapes over Re from 400 to 4000 has been surveyed by Ahmed et al. [11] who found that the mean Nu and the heat transfer improvement gro
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