摘要
采用实验研究球鼻艏附近电火花气泡的运动特性,在球鼻艏正前方、斜45°及正下方不同位置通过电火花打火生成气泡,研究球鼻艏结构附近气泡脉动特性。实验发现,由于球鼻艏结构的特殊性,气泡脉动过程中呈现出与水平刚性板不同的运动状态,因自由面作用,气泡在离球鼻艏较近时可能会在中部产生撕裂,分成两个子气泡。通过总结实验,统计气泡脉动周期、射流速度、中心运动规律和分裂阈值,旨在为水下爆炸气泡运动特性研究提供参考。
The dynamic behaviors of bubbles generated by sperk near a ship bulbous bow were investigated with bubbles initiated in front of, under and beside （with 45 degrees from horizontal） the bulbous bow. The bubble behaviors observed in pulsation were different from those near a horizontal rigid plate. The bubble near the bulbous bow was likely to split into two sub-bubbles due to the effect of free surface. The pulsation period, jet velocity, motion of bubble center and thresholds for split were assessed through a series of tests. The results provided a useful reference for studies on the dynamic behavior of underwater explosion bubbles.
出处
《振动与冲击》
EI
CSCD
北大核心
2012年第22期96-100,162,共6页
Journal of Vibration and Shock
基金
优秀青年科学基金项目(51222904)
国家自然科学基金项目(11202057
51009035)
国家自然科学基金重点项目(50939002)
教育部新世纪人才支持计划(NCET100054)
关键词
球鼻艏
水下爆炸
气泡
实验
bulbous bow
underwater explosion
bubble
test
