半滑行船扰流板阻力试验研究

半滑行船的航行姿态对船体阻力影响较大。为研究扰流板对半滑行船的降阻作用,首先在3种典型载况下,确定了船模未加扰流板的阻力、纵倾及升沉;然后在这3种载况下,于船模艉部添加扰流板,与静水未添加扰流板时船模的阻力和航态作比较,且不同航速时扰流板的设置不同。实验结果表明:合理的扰流板高度可以减小半滑行船的纵倾角和阻力;扰流板的降阻效果与船模的压载有关,其中满载情况下的降阻效果最为明显,最大可达6%。

Model Tests of Effects of Interceptor on Resistance of a Semi-Planing Ship

The posture of semi-planing ship has important influences on ship resistance.In this paper the effects of interceptor on resistance reduction of a semi-planing ship were studied through model tests.First,the model ship＇s resistance,trim and heave were determined on three typical loaded conditions without interceptor.Then added the interceptor on the stern of model ship and compared resistance and posture with the condition not carrying the interceptor.The height of interceptor was experimentally found to be dependent on ship speed.The results show that a well-designed interceptor can reduce the running trim and resistance of the semi-planing hull.It also shows that resistance reduction effect of the interceptor is also dependent on loading condition.The resistance reduction effect is most obvious on the fully loaded condition and it attained a maximum of 6%.