黏性液体爆炸抛撒模型

发布时间：2018-04-22 11:05

本文选题：黏性液体 + 爆炸抛撒　；参考：《振动与冲击》2017年17期

【摘要】：黏性液体爆炸抛撒模型的建立对数值模拟黏性液体爆炸抛撒形成的抛撒云团过程具有重要意义。黏性液体爆炸抛撒包含液体初始驱动、空化效应产生、液体环形成、射流形成和断裂、液滴破碎等现象,这是一个复杂的物理过程。根据不同阶段、不同现象流动特征,建立牛顿黏性流体爆炸抛撒数学模型,计算得到液体抛撒速度、抛撒半径以及液滴尺寸分布。计算结果表明抛撒半径与黏度成正比,而抛撒速度衰减曲线曲率与之成反比。为验证数学模型的准确性设计试验,试验结果与结论一致,模型准确性得到验证。
[Abstract]:The establishment of the model of the viscous liquid explosion is of great significance to the numerical simulation of the dispersing of cloud clusters formed by the dispersing of the viscous liquid explosion. The explosion of the viscous liquid contains the initial driving of the liquid, the formation of cavitation, the formation of the liquid ring, the formation and fracture of the jet, the breakage of the droplets and so on. This is a complex physical process. In the stage, the flow characteristics of different phenomena are set up, and the mathematical model of the Newtonian viscous fluid explosion is set up. The velocity, the scattering radius and the droplet size distribution are calculated. The calculation results show that the scattering radius is proportional to the viscosity, and the curve curvature of the dispersing velocity attenuation curve is inverse ratio. The results are in agreement with the conclusion, and the accuracy of the model is verified.

【作者单位】：国民核生化灾害防护国家重点实验室;北京理工大学爆炸科学与技术国家重点实验室;
【分类号】：O38

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