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为了研究爆炸及燃烧产生的“蘑菇状”烟云，采用中尺度气象模式RAMS(Regional Atmospheric Modeling System)模拟计算了冲击波过后的爆炸烟云运动过程。对于稳定层结大气条件，模拟结果显示爆炸烟云造成的流动是一个多层次涡-波运动的过程。爆炸烟云在浮力作用下会形成浮力涡环结构，在到达最大高度以后，其烟云外侧边缘部分涡度变号，形成了环套环的多涡结构。随时间增加，涡能量的逐步衰减，涡运动转变为重力内波运动。通过模拟不同爆炸当量和不同稳定度烟云的上升最大高度，得到了与目前常用的爆炸烟云上升公式一致的形式。

SIMULATION AND EXPERIMENT OF DEPLOYMENT PROCESS OF INFLATABLE Z-FOLDED TUBES

The inflatable deployment tube is a basic support component of space inflatable structures, and a Z-folded configuration is one of the basic folding ways of the inflatable deployment tube of the inflatable solar array discussed in this paper. A model of segments inflatable control volume for deployment process of inflatable tubes is proposed. The inflatable deployment of the Z-folded tube is simulated by finite element method under zero gravity condition. The variations of the volume and pressure in each folded segment are analyzed. Influence of inflation rate on deployment dynamic characteristics is discussed, and compared with those in literature. An inflatable deployment experiment on an air track is conducted. The results demonstrate that variations of inflation rate have a great influence on the deployment process, and increasing the reduction factor of the inflation rate can decrease the impact force action of the tube at the full deployment.