Published 8 issues per year
ISSN Print: 1065-5131
ISSN Online: 1563-5074
Indexed in
Convective Heat Transfer in a Wavy Channel Utilizing Nanofluids
ABSTRACT
In this paper, hydrodynamic and thermal characteristics of forced convection heat transfer for nanofluids through the wavy channels have been investigated numerically. Nanofluid was produced by mixing nanoscale metallic particles of Al2O3 and basefluids such as water and ethylene glycol. It is assumed that the wavy channel walls are under constant wall heat flux. The governing equations including the continuity, Navier-Stokes, and energy equations were disceritized using the finite-volume method and then solved by the well-known SIMPLE method in a curvilinear coordinate system. Numerical results were obtained for a range of Reynolds numbers of Re = 100−250 and nanoparticle volume concentration of φ = 0−10% and for two nanofluids, namely water−Al2O3 and ethylene glycol−Al2O3. It is found that nanofluids have higher pressure drop and heat transfer coefficient compared with traditional fluids (without nanoparticles). It is shown that an increase in the Reynolds number and particle concentration increases the pressure drop and heat transfer coefficient. Also, the pressure drop and the heat transfer coefficient of the ethylene glycol-Al2O3 nanofluid are higher than those of the water−Al2O3 nanofluid.
-
Mohamadifard Kamal, Zeinali Heris Saeed, Honarmand Mohamad, Experimental Investigation of Pool Boiling Performance of Alumina/Ethylene-Glycol/Water (60/40) Nanofluids, Journal of Thermophysics and Heat Transfer, 28, 4, 2014. Crossref
-
Mohammed Kafel A., Abu Talib A.R., Nuraini A.A., Ahmed K.A., Review of forced convection nanofluids through corrugated facing step, Renewable and Sustainable Energy Reviews, 75, 2017. Crossref
-
Ajeel Raheem K., Salim W.S.-I.W., Hasnan Khalid, Design characteristics of symmetrical semicircle-corrugated channel on heat transfer enhancement with nanofluid, International Journal of Mechanical Sciences, 151, 2019. Crossref
-
Abadshapoori M. Hosseini, Saidi M.H., Lattice Boltzmann simulation of TiO 2 -water nanofluid in a curved boundary domain at high Rayleigh numbers, Computers & Fluids, 168, 2018. Crossref
-
Borah Abhijit, Mehta Sumit Kumar, Pati Sukumar, Analysis of conjugate heat transfer for forced convective flow through wavy minichannel, International Journal of Numerical Methods for Heat & Fluid Flow, 2022. Crossref
-
Boudraa B., Bessaih R., Heat transfer and entropy generation of water/TiO2 nanofluid flow in a wavy channel using two-phase mixture approach, Thermophysics and Aeromechanics, 29, 4, 2022. Crossref