MHD enhanced nanofluid mediated heat transfer in porous metal for CPU cooling

The problem of laminar forced convection flow of nanofluids has been thoroughly investigated for two particular geometrical configurations, namely a uniformly heated tube and a system of parallel, coaxial and heated disks. Numerical results, as obtained for water-γAl 2 O 3 and Ethylene Glycol-γAl 2 O 3 mixtures, have clearly shown that the inclusion of nanoparticles into the base fluids has produced a considerable augmentation of the heat transfer coefficient that clearly increases with an increase of the particle concentration. However, the presence of such particles has also induced drastic effects on the wall shear stress that increases appreciably with the particle loading. Among the mixtures studied, the Ethylene Glycol -γAl 2 O 3 nanofluid appears to offer a better heat transfer enhancement than water- γ/Al 2 O 3 ; it is also the one that has induced more pronounced adverse effects on the wall shear stress. For the case of tube flow, results have also shown that, in general, the heat transfer enhancement also increases considerably with an augmentation of the flow Reynolds number. Correlations have been provided for computing the Nusselt number for the nanofluids considered in terms of the Reynolds and the Prandtl numbers and this for both the thermal boundary conditions considered

Heat transfer enhancement by using nanofluids in forced convection flows

Significance of haphazard motion and thermal migration of alumina and copper nanoparticles across the dynamics of water and ethylene glycol on a convectively heated surface

Marangoni radiative effects of hybrid-nanofluids flow past a permeable surface with inclined magnetic field

Entropy generation analysis for a reactive couple stress fluid flow through a channel saturated with porous material

The influence of thermophoretic particle deposition on fully developed MHD mixed convective flow in a vertical channel with thermal-diffusion and diffusion-thermo effects

A mathematical model is developed to examine the effect of chemical reaction
 on MHD mixed convective heat and mass transfer flow of a couple-stress fluid
 in vertical porous space in the presence of temperature dependent heat
 source with travelling thermal waves. The dimensionless governing equations
 are assumed to be made up of two parts: a mean part corresponding to the
 fully developed mean flow, and a small perturbed part, using amplitude as a
 small parameter. The analytical solution of perturbed part have been carried
 out by using the long-wave approximation. The expressions for the
 zeroth-order and the first order solutions are obtained and the results of
 the heat and mass transfer characteristics are presented graphically for
 various values of parameters entering into the problem. It is noted that
 velocity of the fluid increases with the increase of the couple stress
 parameter and increasing the chemical reaction parameter leads suppress the
 velocity of the fluid. Cross velocity decreases with an increase of the
 phase angle. The increase of the chemical reaction parameter and Schmidt
 number lead to decrease the fluid concentration. The hydrodynamic case for a
 non-porous space in the absence of the temperature dependent heat source for
 Newtonian fluid can be captured as a limiting case of our analysis by
 taking, and α1→0, Da→∞, a→∞.

/pdf/combined-effects-of-chemical-reaction-and-temperature-3bfhp62ldb.pdf

Combined effects of chemical reaction and temperature dependent heat source on MHD mixed convective flow of a couple-stress fluid in a vertical wavy porous space with travelling thermal waves

a Research Scholar, Department of Mathematics, Bharathiar University, Coimbatore and Faculty in dept. of Mathematics, The American College, Madurai-625 002. b Department of Mathematics, P.S.N.A. College of Engineering & Technology, Dindigul-624622, India. c Department of Mathematics, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, Amrita University, India d Fluid Dynamics Division, School of Advanced Sciences, VIT University, Vellore – 632 014, India.

/pdf/mhd-unsteady-flow-of-a-williamson-nanofluid-in-a-vertical-3ns3p1l506.pdf

Mhd unsteady flow of a williamson nanofluid in a vertical porous space with oscillating wall temperature

Effects of non‐Darcian and temperature dependent heat source on two‐phase flow in a vertical porous space with thermal radiation

This paper is devoted to the study of fully developed flow of a couple-stress fluid between two long vertical walls under the temperature of one of the wall is oscillating about a constant nonzero temperature in presence of viscous dissipation and radiative heat flux with heat and mass transfer. The coupled non-linear equations governing the problem are solved analytically by using perturbation series method. The expressions for the velocity, temperature and concentration field have been constructed and the influences of several interesting parameters on heat and mass transfer characteristics of the fluid flow are discussed with the help of graphs.

Heat and mass transfer effects on mhd fully developed flow of a couple-stress fluid in a vertical channel with viscous dissipation and oscillating wall temperature

D. Lourdu Immaculate

Papers

The influence of thermophoretic particle deposition on fully developed MHD mixed convective flow in a vertical channel with thermal-diffusion and diffusion-thermo effects

Combined effects of chemical reaction and temperature dependent heat source on MHD mixed convective flow of a couple-stress fluid in a vertical wavy porous space with travelling thermal waves

Mhd unsteady flow of a williamson nanofluid in a vertical porous space with oscillating wall temperature

Effects of non‐Darcian and temperature dependent heat source on two‐phase flow in a vertical porous space with thermal radiation

Heat and mass transfer effects on mhd fully developed flow of a couple-stress fluid in a vertical channel with viscous dissipation and oscillating wall temperature