Air Bubble Oscillation Frequencies in Boiling Water Reactor Pressure Suppression Pools

The effects of bubble interaction and boundary surfaces on the radial oscillation dynamics of multiple air bubbles in a liquid pool are analyzed. Quantitative predictions are obtained for the coupling between bubble phasing and the distribution of power over a range of frequencies, the crowding effect on bubble frequency when multiple bubbles are formed in a single pool, the effect on frequency of a bubble's rise from a point near the floor of a pool toward the free surface, and the frequency correction for test tank data when the design condition of interest is a discharge in a larger pool.