The Effective Convectivity Model for Simulation of Molten Metal Layer Heat Transfer in a Boiling Water Reactor Lower Head

<table>CFD simulation velocity (a) and liquid fraction (b) contours at 22 min.</table>

Science and Technology of Nuclear Installations

Figure 7: The Effective Convectivity Model for Simulation of Molten Metal Layer Heat Transfer in a Boiling Water Reactor Lower Head 