水下多点爆炸条件下的冲击波载荷特性  

Load Characteristics of Shock Wave under Condition of Multiple Underwater Explosion(UNDEX)

作　　者：余俊[1] 盛振新[1] 毛海斌[1] 王海坤[1] YU Jun;SHENG Zhenxin;MAO Haibin;WANG Haikun(China Ship Scientific Research Center,Wuxi 214082,Jiangsu,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《高压物理学报》2021年第2期120-127,共8页Chinese Journal of High Pressure Physics

摘　　要：针对水下多爆源起爆的实战背景,开展了两点同时起爆条件下冲击波载荷特性的数值模拟研究。基于自研的多相可压缩流体计算程序,采用高精度的数值格式对流体控制方程进行离散求解。将数值模型计算的自由场水下爆炸的结果与理论结果比较,初步验证了数值模型计算的准确性与可靠性。利用该模型计算了典型工况下水下两点起爆工况,计算结果表明:两爆源对称面上压力相比单爆源线性叠加后的峰值压力增加12%~16%;两爆源垂直截面之间的压力存在双峰现象;而对于两垂直截面之外的测点压力也存在双峰现象,第1个峰值压力与单爆源线性叠加的峰值相等,第2个峰值压力要远低于单爆源线性叠加的峰值,峰值压力下降幅度可高达30%左右。研究结果能够为水下武器防护设计与威胁评估提供参考。According to the actual combat background of underwater multiple initiation,the numerical simulation of shock wave load characteristics under the condition of two-point simultaneous initiation is carried out.Based on the self-developed multiphase compressible fluid calculation program,a high precision numerical scheme is used to discretize the fluid control equation.Firstly,the results of free-field underwater explosion calculated by the numerical model are compared with the theoretical results,and the accuracy and reliability of the numerical model are preliminarily verified.And then this numerical model is used to calculate the underwater two-point initiation condition under typical working conditions.The results show that the pressure on the symmetrical plane of the two explosion sources increases by 12%to 16%compared with the peak pressure after the linear superposition of the single explosion source.There is a bimodal phenomenon in the pressure between the vertical sections of the two explosion sources.For the pressure at the measuring point outside the two vertical sections,there is also a double-peak phenomenon,the first peak pressure is equal to the peak value of the linear superposition of the single explosion source,and the second peak pressure is much lower than the peak value of the linear superposition of the single explosion source.The peak pressure can be reduced by as much as 30%.The research results of this paper can provide reference for underwater weapon protection design and threat assessment.

关 键 词：多爆源 冲击波 水下爆炸 冲击防护 

分 类 号：O383.1[理学—流体力学]