Thursday, March 22nd, 2018

Heatline based thermal management for natural convection within right-angled porous triangular enclosures with various thermal conditions of walls

Publication year: 2011brbSource:/b Energy, In Press, Corrected Proof, Available online 13 July 2011brR., Anandalakshmi , Ram Satish, Kaluri , Tanmay, BasakbrAnalysis of natural convection in porous triangles have many important energy related applications in geophysical and solar energy fields. A numerical study on heat distribution and thermal mixing during steady laminar natural convective flow inside a right-angled triangular enclosure filled with porous media subjected to various wall boundary conditions is investigated in this study using Bejan’s heatlines approach. Influence of various thermal boundary conditions and inclination angles (φ) on evaluation of complex heat flow patterns are studied as a function of Darcy numbers (Da) for various regimes of Prandtl (Pr) and Rayleigh (Ra) numbers. Studies illustrate that maximum heat transfer…br Highlights: ► Analysis on heatlines is carried out for various isothermal and nonisothermal heating situations. ► Natural convection for fluids within porous right-angled triangular cavities are considered. ► Detailed analysis on flow, temperature and heatline characteristics has been done. ► Optimal thermal mixing and enhanced heating rates are compared for various angles of inclination. ► Effects of Darcy number and Prandtl numbers are also investigated.

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