Natural convection heat transfer between inner sphere and outer vertically eccentric cylinder

摘要: The effects of eccentricity and geometric configuration with a Newtonian fluid have been investigated numerically to determine heat transfer by natural convection between the sphere vertical cylinder isothermal boundary conditions. inner outer were heated cooled in steady change temperature. Calculations carried out systematically for range Rayleigh numbers average Nusselt which are affected ratio (HR:RR) (e) parameters on flow temperature fields. governing equations, terms vorticity, stream function expressed spherical polar coordinate system. Results parametric study conducted further reveal that fields primarily dependent number, configuration, Prandtl number 0.7, ranging from 103 106, three eccentricities two configurations. Above all, specification different convective configurations has significant effect rate across composite annulus gap.