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Numerical Simulation on Convection and Thermal Radiation of Casson Fluid in an Enclosure with Entropy Generation

Abdullah Khamis Alzahrani, S. Sivasankaran, M. Bhuvaneswari

2020Entropy34 citationsDOIOpen Access PDF

Abstract

The goal of the current numerical simulation is to explore the impact of aspect ratio, thermal radiation, and entropy generation on buoyant induced convection in a rectangular box filled with Casson fluid. The vertical boundaries of the box are maintained with different constant thermal distribution. Thermal insulation is executed on horizontal boundaries. The solution is obtained by a finite volume-based iterative method. The results are explored over a range of radiation parameter, Casson fluid parameter, aspect ratio, and Grashof number. The impact of entropy generation is also examined in detail. Thermal stratification occurs for greater values of Casson liquid parameters in the presence of radiation. The kinetic energy grows on rising the values of Casson liquid and radiation parameters. The thermal energy transport declines on growing the values of radiation parameter and it enhances on rising the Casson fluid parameter.

Topics & Concepts

MechanicsGrashof numberEnclosureThermalThermal radiationEntropy (arrow of time)RadiationNatural convectionConvectionMaterials scienceThermodynamicsPhysicsNusselt numberTurbulenceReynolds numberOpticsEngineeringTelecommunicationsNanofluid Flow and Heat TransferFluid Dynamics and Turbulent FlowsHeat and Mass Transfer in Porous Media
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