Numerical Study of Convection Air Currents Around a Hot Cylinder Inside a Triangular Cavity

A numerical study was performed of natural laminar convective heat transfer to its concentrated triangular enclosure around a horizontal circular cylinder. The air-filled kept the inner and outer cylinders at uniform temperatures. Boussinesq density approximation momentum problem control volume approach iteratively resolved governing equations explain buoyancy. CFD results show that velocity behavior increases by increasing Ra, so stream lines becomes more sluggish less vortices gets circulated pattern. rotation angle ? has significant effect on vortices, 90o gives higher range zones free convection with range. thermal boundary layer seems be larger in rr=0.455 as compared rr=0.345 decreases ?. variation isotherms appears lower because rate occurs maximum 90o. Eight correlations average Nusselt number have been deduced function Rayleigh for taken values aspect ratio angles inclination.