抄録
Analyses of natural convection are performed using an analytical model consisting of two concentric spheres. The parameters used in the calculation are Pr=0.71, 0.025 and Ra=100. · Results obtained for Pr=0.71, Ra=229,330 and Ra=749,760 are compared with results of visualization experiments carried out by Yin et al., and good agreement is confirmed. Mutual relationships among the coriolis force, lorentz force and temperature are discussed. For the analysis of an induction magnetic field, the B method is developed and analyzed using the two concentric spheres with analytical model. The results obtained are compared with those obtained by the φ method, and the efficacy of the B method is demonstrated.
