高速圆舭艇无浅水影响的最小水深衡准

THE CRITERION OF WATER DEPTH WITHOUT SHALLOW WATER EFFECT FOR HIGH SPEED ROUND BILGE HULL

本文通过5条模型、7种吃水状态的浅水阻力试验,经回归分析得到高速圆舭艇无浅水影响的最小水深条件,包括各种航速下均无浅水影响的“绝对深水”条件和不同航速下的“相对深水”条件,其适用范围可达Fr=0.8。将本文提出的衡准与国内外现有各种衡准进行了比较:在Fr≤0.4～0.5时,本衡准与各国驱逐舰的衡准基本一致,从而证实了本衡准的可靠性;当Fr≥0.5以后,差别较明显,表明目前常用的将驱逐舰浅水衡准用于高速圆舭艇是不合理的。

The resistance test of five typical model of high speed round bilge hull were conducted for seven drafts in deep and shallow water. The criterion of water depth without shallow water effect is obtained fased on the regression analysis of the test data, which may be used for the high speed craft with the Froude number up to Fr=0.8.