Numerical Solutions Of Temperature Fields Research Articles

Conjugate heat transfer between two natural convections separated by a vertical plate

Coupled heat transfer between two laminar natural convection systems separated by a vertical conductive wall is theoretically analyzed, taking account of the two-dimensional thermal conduction in the separating wall. Numerical solutions of temperature fields for both fluid flows are combined with the analytical solution for the wall so as to satisfy the continuity of the temperature and the heat flux at both sides of the conducting wall. Obtained results of the whole temperature field show that the axial conduction effect in the wall is substantial when the wall is thick and has a high thermal conductance, and that axial conduction in the wall is found to relax the interference between the two convections in both fluids. Experiments have been conducted for air-air systems with the conducting wall made of aluminum or glass. Theoretical predictions describe well the experimental temperature distributions, showing the validity of the present analysis.

Numerical solutions for temperature fields in electric coils

THE MAXIMUM PERMISSIBLE electric loading of a coil is restricted by the allowable temperature rise in the coil cross section. In order to establish this peak loading, the designer must compute the maximum temperature or general temperature distribution that is peculiar to each new cross-section profile under design loading. A technique for computing these general temperature fields t(x, y) which combines simplicity with both flexibility and accuracy is the numerical-relaxation method of Emmons and Southwell.