CAJ | 학술논문

研究了近水面水下爆炸的水柱形态及其形成机理。进行了5种比例深度的水下爆炸实验，通过高速录像和同步冲击波压力测量，分别记录水柱形成过程和水下冲击波压力，两方面测试结果相互对照，分析不同比例深度的水柱形态及其形成机理。对于实验的5种比例深度，分别出现了喷射水柱、水射流和二次水冢等3种水柱形态，表明比例深度对水柱形态具有决定性影响。根据实验结果，发现水面形成水射流的比例因子存在一定取值范围，其上限值介于0.543和0.644之间，间接表明Blake准则关于水射流形成的临界比例因子可能偏小。
연구료근수면수하폭작적수주형태급기형성궤리。진행료5충비례심도적수하폭작실험，통과고속록상화동보충격파압력측량，분별기록수주형성과정화수하충격파압력，량방면측시결과상호대조，분석불동비례심도적수주형태급기형성궤리。대우실험적5충비례심도，분별출현료분사수주、수사류화이차수총등3충수주형태，표명비례심도대수주형태구유결정성영향。근거실험결과，발현수면형성수사류적비례인자존재일정취치범위，기상한치개우0.543화0.644지간，간접표명Blake준칙관우수사류형성적림계비례인자가능편소。
The morphology and formation mechanism of water columns produced by near surface underwa-ter explosion was studied. By using high-speed camera and synchronous measurement of shock wave pres-sures, recording the forming process of water column and shock wave pressures, and contrasting those two results, the configuration and formation mechanism of water columns for five scaling depths underwater ex-plosion experiments were analyzed. The 5 scaling depths experiments appeared 3 water column configu-rations, including spray water column, jet and secondary water dome. The experimental results show that the scaling depths have decisive effects to the water column configuration, and the scaling factor of forming jet has a certain range, and the upper limit is between 0.543 and 0.644. The critical scaling factor to judge the appearance of Bjerknes or Buoyancy jet in Blake Criterion may be a little smaller.