MHD natural convective Ag-water nanofluid flow in an enclosure having internal heat generation with centre heater and bottom heat source Online publication date: Wed, 24-Jan-2018
by Nagarajan Nithyadevi; Thangavelu Mahalakshmi; C. Udhaya Shankar
International Journal of Nanoparticles (IJNP), Vol. 9, No. 4, 2017
Abstract: Numerical study on MHD natural convection inside enclosure filled with Ag-water with centre heater is conducted. The vertical walls of enclosure are maintained at temperature Tc whereas its top wall is insulated and bottom wall is considered with constant heat source. The governing equations are solved numerically by finite volume method and SIMPLE algorithm. The effects of heater length, Rayleigh number, Hartmann number and heat generation parameter are investigated. Results are presented with streamlines, isotherms, variation of average Nusselt number and mid height velocity profile. It is found that high heat transfer is obtained for the vertical heater and Hartmann number is a good control parameter for suppressing heat transfer. Moreover, the fluid flow, thermal fields and rate of heat transfer are strongly depending on heater length and heat generation parameter. Also, increasing solid volume fraction of nanoparticles cause better enhancement of heat transfer inside enclosure.
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