Spreading radius of fountains after impinging on a free surface
Spreading radius of fountains after impinging on a free surface
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发表时间：
2004
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通讯作者：
C. Lemckert
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作者：
C. Lemckert
实验室实验和尺寸的考虑被用来调查的扩展半径的轴对称喷泉后，他们的自由表面上的初始均匀和静态的周围环境的冲击。喷泉流体传播的距离，然后暴跌向下作为负浮力的结果，被发现是一个函数的源半径，源弗劳德数和流体被注入的深度。例如，对于相同的注入深度和源半径，源弗劳德数（以及初始动量）越大，表面流的扩散越大。实验数据和简单的缩放考虑被用于预测传播距离的方程。结果表明，需要进一步的研究，以量化混合过程和稀释率。
Laboratory experiments and dimensional considerations were used to investigate the spreading radius of axisymmetric fountains after they impinged upon the free surface of the initially homogeneous and quiescent ambient environment. The distance to which the fountain fluid spread, before plunging downwards as the result of negative buoyancy, was found to be a function of the source radius, the source Froude number and the depth at which the fluid was injected. For example, the greater the source Froude number (and hence initial momentum) the greater the spread of the surface flow for the same injection depth and source radius. Experimental data and simple scaling considerations were used to an equation for predicting the spreading distance. The results show the need for further studies to quantify mixing processes and dilution rates.