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| Liquid layered phenomenon and initial droplet size during explosive dispersal process |
| Received:July 04, 2013 Revised:October 14, 2013 |
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| DOI：10.7511/jslx201406016 |
| KeyWord:explosive dispersal liquid layered phenomenon initial breakup drop size numerical simulation |
| Author | Institution |
| 石艺娜 |
北京应用物理与计算数学研究所, 北京 |
| 洪滔 |
北京应用物理与计算数学研究所, 北京 |
| 姚雯 |
北京应用物理与计算数学研究所, 北京 |
| 冯其京 |
北京应用物理与计算数学研究所, 北京 |
| 秦承森 |
北京应用物理与计算数学研究所, 北京 |
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| Abstract: |
| It is one of the important stages in the process of aerosol cloud formation,the liquid outer interface happens to disperse and break up.The flow fields driven by explosive detonation are simulated by using the Euler code,with dimensional split algorithm.Young's method is employed to deal with the interface in the mixing mesh.Liquid layered phenomenon of the dispersal devices is verified.According to the experimental and calculated results,it is deduced that there exist three possible mechanisms of initial droplet formation process at the same time:liquid jet breakup,R-T instability and liquid dynamic fragmentation.The different primary breakup models are built,and theoretical formulae of droplet diameter are derived.The size and velocity distributions of initial droplet are simulated,and the results are compared between glycerin and water mediums.The jet mass of liquid outer interface are obtained. |
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