Effects of system spatial distribution on natural circulation under rolling motion condition

The effects of the system spatial distribution including mass distribution, rolling axes and double loops on natural circulation under rolling motion condition were studied theoretically based on the mathematical model of natural circulation flow with rolling motion. The results show that the spatial distribution has important influences on natural circulation flow due to the time-spatial characteristic of additional acceleration caused by the rolling motion, and the effect of rolling axes is significant. For the coolant system, the effect of centripetal force may be counteracted by the symmetrical distribution of the loop; the effect of tangential force may be reduced by locating the rolling axes outside the loop, and the fluctuation of the total coolant mass flow rate may be lowered by using symmetrical double loops.