THEORETICAL AND APPLIED MECHANICS

     TEORIJSKA I PRIMENJENA MEHANIKA  2009 Vol.36(4), pp.261-274

Summary: 

Rudra Kt. Deka, Bhaben Ch. Neog

Unsteady natural convection flow past an accelerated vertical
plate in a thermally stratified fluid

An exact solution to one-dimensional unsteady natural convection flow past an infinite vertical accelerated plate, immersed in a viscous thermally stratified fluid is investigated. Pressure work term and the vertical temperature advection are considered in the thermodynamic energy equation. The dimensionless governing equations are solved by Laplace Transform techniques for the Prandtl number unity. The velocity and temperature profiles as well as the skin-friction and the rate of heat transfer are presented graphically and discussed the effects of the Grashof number Gr, stratification parameter S at various times t.