A study on the effect of magnetic field and the sinusoidal boundary condition on free convective heat transfer of non-Newtonian power-law fluid in a square enclosure with two constant-temperature obstacles using lattice Boltzmann method
作者： Sara Rostami , R. Ellahi , Hakan F. Oztop , Aysan Shahsavar Goldanlou
DOI: 10.1007/S10973-020-10202-2
关键词:
摘要: In this paper, the flow pattern and thermal characteristics of free convection a Newtonian magnetohydrodynamic fluid inside square enclosure are compared against two different non-Newtonian power-law (PL) fluids. The with horizontal insulated walls has constant-temperature obstacles, while sidewalls differentially heated sinusoidal pattern. Boussinesq approximation is used to consider effect hydrodynamic field on field. problem grounded using lattice Boltzmann method, D2Q9 function describe distribution density energy. effects Rayleigh number, PL index, aspect ratio Hartmann periodicity boundary condition investigated. results showed that increasing Nusselt number increases but index decreases for shear thinning, thickening addition, it was shown obstacles number. Also, reported thinning fluids from 2π 4π, reduces by further increase in periodicity.
springer.com
sci-hub.st 参考文章(56)
R. P. Chhabra, J. F. Richardson, Non-Newtonian Flow and Applied Rheology: Engineering Applications ,(2008)
Susana Gabbanelli, German Drazer, Joel Koplik, Lattice Boltzmann method for non-Newtonian (power-law) fluids. Physical Review E. ,vol. 72, pp. 046312- ,(2005) , 10.1103/PHYSREVE.72.046312
Dongyan Gao, Zhenqian Chen, Lattice Boltzmann simulation of natural convection dominated melting in a rectangular cavity filled with porous media International Journal of Thermal Sciences. ,vol. 50, pp. 493- 501 ,(2011) , 10.1016/J.IJTHERMALSCI.2010.11.010
Lyes Khezzar, Dennis Siginer, Igor Vinogradov, Natural convection of power law fluids in inclined cavities International Journal of Thermal Sciences. ,vol. 53, pp. 8- 17 ,(2012) , 10.1016/J.IJTHERMALSCI.2011.10.020
GH.R. Kefayati, Simulation of magnetic field effect on natural convection of non-Newtonian power-law fluids in a sinusoidal heated cavity using FDLBM International Communications in Heat and Mass Transfer. ,vol. 53, pp. 139- 153 ,(2014) , 10.1016/J.ICHEATMASSTRANSFER.2014.02.026
Meisam Habibi Matin, Waqar Ahmed Khan, Laminar natural convection of non-Newtonian power-law fluids between concentric circular cylinders International Communications in Heat and Mass Transfer. ,vol. 43, pp. 112- 121 ,(2013) , 10.1016/J.ICHEATMASSTRANSFER.2013.02.006
Hiroyuki Ozoe, Stuart W. Churchill, Hydrodynamic stability and natural convection in Ostwald-de Waele and Ellis fluids: The development of a numerical solution Aiche Journal. ,vol. 18, pp. 1196- 1207 ,(1972) , 10.1002/AIC.690180617
S.C. Fu, R.M.C. So, W.W.F. Leung, Linearized-Boltzmann-type-equation-based finite difference method for thermal incompressible flow Computers & Fluids. ,vol. 69, pp. 67- 80 ,(2012) , 10.1016/J.COMPFLUID.2012.08.016
Osman Turan, Anuj Sachdeva, Nilanjan Chakraborty, Robert J. Poole, Laminar natural convection of power-law fluids in a square enclosure with differentially heated side walls subjected to constant temperatures Journal of Non-newtonian Fluid Mechanics. ,vol. 166, pp. 1049- 1063 ,(2011) , 10.1016/J.JNNFM.2011.06.003
GH.R. Kefayati, Mesoscopic simulation of magnetic field effect on natural convection of power-law fluids in a partially heated cavity Chemical Engineering Research & Design. ,vol. 94, pp. 337- 354 ,(2015) , 10.1016/J.CHERD.2014.08.014