Thermal radiation on oscillatory flow past a moving vertical plate in a time varying gravity field
Department of Mathematics, Narajole Raj College, Narajole, Dist- PaschimMidnapore – 721211 West Bengal, India.
Research Article
Global Journal of Engineering and Technology Advances, 2020, 02(01), 001-007.
Article DOI: 10.30574/gjeta.2020.2.1.0015
Publication history:
Received on 31 December 2019; revised on 10 January 2020; accepted on 14 January 2020
Abstract:
Thermal radiation on oscillatory flow of a viscous incompressible fluid of an optically dense medium past a moving hot vertical plate under the influence of a time varying gravity field by using Rosseland approximation is investigated. Since the flow is characterised by a time varying gravity field, a g-jitter force is associated with microgravity field in space. In a g-jitter driven flow, the empty space above the leading edge of the medium corresponds to a crystal growth in space; the net mass flow rate in the system is zero. In a time varying gravity field, the flow is characterised by the oscillating velocity near the plate surface with reference to a phase angle and to increase the fluid velocity with increase in phase angle due to impulsive onset into motion. The effects of radiation parameter, Prandtl number and Grashof number on the velocity field are analysed. The effect of Nusselt number at the plate is discussed.
Keywords:
Thermal radiation; G-jitter force; Oscillatory flow; Grashof number; Rosseland approximation; Time varying gravity.
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