Investigation on Mass Flux Distribution and Asymmetrical Cooling in A Plate-Type Fuel Reactor

A program was developed to calculate the mass flux distribution in the whole core and the asymmetrical cooling of fuel pins for a plate type fuel reactor by applying the proper physical model.Three iterative algorithms for mass flux distribution calculation and two iterative algorithms for temperature field calculation of plate fuel element under asymmetrical cooling condition were proposed and compared by applying in a subassembly.The results showed that the flow distribution is mainly determined by the core structure,although it is also impacted by the power distribution in the core.The asymmetrical cooling condition seriously impacts the temperature field and power distribution of the fuel pins.