LOW PRESSURE DROP NUCLEAR FUEL ASSEMBLY BOTTOM NOZZLE

摘要

A nuclear fuel assembly having a bottom nozzle with protrusions that extend from the upstream and downstream side of a horizontally supported perforated flow plate. The protrusions have a funnel-like shape that gradually decreases the lateral flow area on the upstream side of the perforated flow plate and gradually increases the lateral flow area on the downstream side of the perforated plate. The protrusions on the downstream side are preferably recessed to accommodate the ends of the fuel rods.