2-DIMENSIONAL NUMERICAL-SIMULATION ON HE-II HEAT-TRANSPORT

Heat transport characteristics in a helium channel for recovery proces ses have been investigated. The experimental results are analyzed by a two dimensional time dependent numerical calculation. One side wall o f the channel is heated uniformly. The channel is placed vertically in a helium bath. The bath is atmospherically pressurized and is filled with He II or subcooled He I. It is clearly simulated that, when the b ath is filled with He II, the generated He I in the channel recovers t o He II near the top of the channel. On the other hand, when the bath is filled with subcooled He I, the heated helium flows out from the to p of the channel and cooled in the bath.