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Influence of Corner flow on Mixed Convection in a Cavity


Affiliations
1 Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India
2 Department of Power Engineering, Jadavpur University, Salt Lake, Kolkata–700106, India
 

The external flow based mixed convection has wide uses in many applications. The present numerical investigation is carried out on a ventilated porous cavity providing fluid flow diagonally. Two heating elements and cooling elements are placed in the middle of the walls of the cavity. The simulation is carried out using an inhouse code for a range of parameters such as different flow regime (using Richardson number Ri= 0.120), Flow velocity (using Reynolds number Re= 10200), permeability (using Darcy number Da= 10 10 ) and porosity ( = 0.30.8) of the porous media. The -7 -3 ε results are presented using isotherms, streamlines and average Nusselt number. The obtained results show a strong parametric dependence of fluid flow and associated heat transfer phenomena. An exception to the usual trends of heat transfer characteristics of clear and porous domain, the heat transfer of porous domain increases due to corner flow.

Keywords

Mixed Convection, Porous Cavity, Corner flow, Heat Transfer.
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  • Influence of Corner flow on Mixed Convection in a Cavity

Abstract Views: 487  |  PDF Views: 193

Authors

Anish Pal
Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India
Sayanta Midya
Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India
Aakash Gupta
Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India
Nirmalendu Biswas
Department of Power Engineering, Jadavpur University, Salt Lake, Kolkata–700106, India
Nirmal K. Manna
Department of Mechanical Engineering, Jadavpur University, Kolkata 700032, India

Abstract


The external flow based mixed convection has wide uses in many applications. The present numerical investigation is carried out on a ventilated porous cavity providing fluid flow diagonally. Two heating elements and cooling elements are placed in the middle of the walls of the cavity. The simulation is carried out using an inhouse code for a range of parameters such as different flow regime (using Richardson number Ri= 0.120), Flow velocity (using Reynolds number Re= 10200), permeability (using Darcy number Da= 10 10 ) and porosity ( = 0.30.8) of the porous media. The -7 -3 ε results are presented using isotherms, streamlines and average Nusselt number. The obtained results show a strong parametric dependence of fluid flow and associated heat transfer phenomena. An exception to the usual trends of heat transfer characteristics of clear and porous domain, the heat transfer of porous domain increases due to corner flow.

Keywords


Mixed Convection, Porous Cavity, Corner flow, Heat Transfer.

References





DOI: https://doi.org/10.21843/reas%2F2019%2F61-71%2F196167