Development of unsteady boundary layers on the generatrices of a vertical silicon rod heated by electric current in the mode of conjugate radiation-convective heat transfer

Abstract The nonstationary conjugate radiation-convective heat transfer of a single silicon rod heated by an electric current with the surrounding gas medium is studied numerically in axisymmetric formulation finite element method. calculations were carried out at Prandtl number Pr = 0.68, and range Grashof number, determined temperature difference radius 9 703 ≤ Gr 261 977. It shown that after short incubation period, circulation flow formed. As result, significantly inhomogeneous field longitudinal direction formed current. increases, inhomogeneity distribution increases.