A computational study of bubble-structure interaction

The complex interaction bent een underwater explosion bubbles and nearby st ructures is studied using two-fluid computational fluid dynamics. Gravitati onal effects on bubble jetting are significantly different between jet-up a nd jet-down orientations. This paper presents computational results of unde rwater explosion hubble dynamics near a disk anti a sphere. The results sho w that the bubble jetting and collapse phenomena and the consequent pressur e lending are affected br the structure's shape, the orientation of the bub ble to the structure, and the bubble depth. A unifying notion emerges conne cting jet strength at impact to bubble curvature at the time of jet formati on.