The boron dilution transient of reactor is simulated using CFX10.0 in this paper.The boron concentration distributions and temperature distributions are obtained for the reactor.The results show that

as temperature of the reactor increases

the resistances fall down and clear water can reach the reactor core quickly

the mixing time between the clear water and borated water reduces

and the mixing effect weakens

with a lower boron concentration at the centre than other parts of the reactor core.