Effect of Radiation and Gravity Modulation on Unsteady MHD Free Convection Flow Through Porous Medium in Slip-Flow Regime with Entropy

Satish Chandra RAJVANSHI; Baljinder Singh SAINI; Bhawn JEET

Authors

Satish Chandra RAJVANSHI Department of Applied Sciences, Gurukul Vidyapeeth Institute of Engineering & Technology, Distt Patiala, Punjab
Baljinder Singh SAINI Department of Applied Sciences, Gurukul Vidyapeeth Institute of Engineering & Technology, Distt Patiala, Punjab
Bhawn JEET Department of Applied Sciences, Institute of Engineering & Technology, Bhaddal, Distt Ropar, Punjab

Keywords:

Porous medium, MHD, heat transfer, entropy, gravity fluctuation, slip-flow

Abstract

The effect of radiation and periodic oscillation of the gravitational field on free-convection from a vertical plate is investigated. It is assumed that the gravity modulation is given by a harmonic function superimposed on a constant. The permeability and suction velocity is assumed to fluctuate with time. The transformed equations are solved by perturbation technique to investigate the effects of Prandtl number and gravity modulation parameter. The effect of gravity modulation on velocity, temperature, skin friction, penetration distance and entropy are discussed. It is observed that the Prandtl number and gravity modulation affect the shear stress and the rate of heat transfer considerably.

doi:10.14456/WJST.2014.41

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Author Biographies

Satish Chandra RAJVANSHI, Department of Applied Sciences, Gurukul Vidyapeeth Institute of Engineering & Technology, Distt Patiala, Punjab

Head of the Department of Applied Sciences

Gurukul Vidyapeeth Institute of Engineering and Technology, Ramnagar, Banur, Distt Mohali, Punjab

Baljinder Singh SAINI, Department of Applied Sciences, Gurukul Vidyapeeth Institute of Engineering & Technology, Distt Patiala, Punjab

Research Scholar

Bhawn JEET, Department of Applied Sciences, Institute of Engineering & Technology, Bhaddal, Distt Ropar, Punjab

Lecturer, Department of Applied Sciences

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