THE EFFECT OF A MAGNETIC-FIELD ON HEAT-TRANSFER IN A SLOTTED CHANNEL

The results of numerical and experimental studies of liquid metal heat transfer in slotted channels in a transverse magnetic field are prese nted. Test results showed an improvement in heat transfer in a straigh t channel at low and moderate interaction parameter N. The Nusselt num ber at small N (around 120) was up to twofold higher than in turbulent flow without a magnetic field, the Peclet number being equal. This ef fect of heat transfer enhancement is caused by the generation and deve lopment of large-scale velocity fluctuations close to the heated wall area. Qualitative and quantitative correlations between heat transfer and velocity fluctuation characteristics are presented.