Thermal convection in octagonal-shaped enclosures
Prabir Kumar Kar, Yada Nandu Kumar, Prasanta Kumar Das, Rajaram Lakkaraju
Abstract
An investigation into what triggers flow reversals in thermal convection, especially in two-dimensional enclosures, explores whether it is due to the corner roll growth process or the core bulk region instabilities, and examines the effect of enclosure shape. Using direct numerical simulations, it is shown that the flow reversals are due to the core bulk region instabilities.
Topics & Concepts
EnclosureConvectionMechanicsThermalCore (optical fiber)Flow (mathematics)Natural convectionGeologyConvective heat transferMaterials sciencePhysicsMeteorologyOpticsEngineeringElectrical engineeringFluid Dynamics and Turbulent FlowsNanofluid Flow and Heat TransferPlant Water Relations and Carbon Dynamics