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On the limiting parameters of artificial cavitation

机译:关于人工空化的极限参数

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摘要

Artificial cavitation, or ventilation, is produced by releasing gas into the liquid flow. One of the objectives of creating this multiphase flow is to reduce frictional and sometimes wave resistance of a marine vehicle completely or partially immersed in the water. Flows around surface ships moving along the water-air boundary are considered in this paper. It is favorable to achieve a negative cavitation number in the developed cavitating flow under the vessel's bottom in order to generate additional lift. Cavities, formed in the flow, have limiting parameters that are affected by propulsion and lift-enhancing devices. Methods for calculating these influences and the results of a parametric study are reported.
机译:通过将气体释放到液流中来产生人工气蚀或通风。产生这种多相流的目的之一是减少完全或部分浸入水中的船舶的摩擦力,有时甚至是其波阻。本文考虑了沿水-空气边界运动的水面舰艇周围的水流。为了产生额外的升力,在容器底部下方的空化流中实现负空化数是有利的。在流动中形成的空腔具有受推进和提升装置影响的极限参数。报告了计算这些影响的方法和参数研究的结果。

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