Cfd Simulation Of The Boron Injection Into The Lower Plenum Of A Bwr

摘要

Boiling water reactors (BWRs) are equipped with a standby liquid control system (SLCS). The SLCS is used to inject boron to shutdown the reactor from full power condition in the event that the control rods fail to insert. In order for the SLCS system to shut down the reactor, adequate mixing of the borated solution with the reactor coolant is necessary. In BWRs prior to BWR 5, the boron injection points are located in the lower plenum. The objective of this project is to provide insight into the behavior of multi-species flow in typical pre-BWR 5 reactors during the injection of boron by using computational fluid dynamics (CFD). The results were validated against measurements conducted by GE during the 1/6 scale test program performed in 1981.