Abstract
The effect of partial heating and cooling on laminar natural convective heat transfer in right-angle triangular cavity filled with water has been investigated numerically. The triangular cavity is presented in nine different configurations namely Left-Bottom, Left-Middle, Left-Top, Middle-Bottom, Middle-Middle, Middle-Top, Right-Bottom, Right-Middle and Right-Top and the length of the thermally active wall is b = L/3. The base wall is considered as partially hot while the side wall as partially cold. Two-dimensional steady-state continuity, Navier–Stokes and energy equations along with the Boussinesq approximation are solved using the finite volume method. The Rayleigh number is varied from 105 to 107. Results revealed that the heat transfer rate is high for LB walls whereas low for RT location. Also, the heat transfer rate enhancement is observed for all values of Rayleigh number.
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