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为什么会喷出这种水圈

更新时间: 2020-10-09 00:00:00     

很正常的流体动力学现象,喷嘴往外喷的瞬间是有扩散的(失去器壁约束),之后进入空气中高速流动,空气在流动速带动下流动,周围压强减少,外围压强增大,这就又形成束流收缩。所以一般情况下对于喷流速较大而且喷口形成类似密封膜就会有这种情况。

关键词: 为什么 这种 水圈

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