Heat transfer by steady laminar free convection in triangular enclosures

Abstract Two-dimensional laminar free convection in air contained in a long horizontal right-triangular enclosure has been investigated using numerical techniques. Steady-state solutions have been obtained for height-base ratios of 0.0625 H / B ⩽ 1.0 for Grashof number of 800 ⩽ Gr ( B ) ⩽ 64 000. Results show that heat transfer across the base wall increases towards the hypotenuse/base intersection such that the third of the base length nearest the intersection accounts for about 60% of the heat transferred across the base. Results are well correlated by N u (B) = 1,102[Gr (B) ] 0,0535 [H/B] −1,19 for 0,0625 ⩽ H/B ⩽ 0.25.