Influences of a confined elliptic cylinder at different aspect ratios and inclinations on the laminar natural and mixed convection flows

摘要: Abstract Numerical investigations were carried out for natural and mixed convection within domains with stationary rotating complex geometry by using an immersed-boundary method. The method was first validated flows induced in the annulus between concentric circular cylinder square enclosure, grid-function convergence tests also examined. Natural isothermally elliptic further investigated different Rayleigh numbers range of 10 4 –10 6 influence outer enclosure considered. parameters study included number, axis ratio inclination angle cross-section. Local average heat transfer characteristics fully studied around surfaces both inner enclosure. Finally, a active considered quantities system obtained speeds.