铰接式顶推船船模浅水阻力试验及实船预报

Shallow Water Resistance Tests and Prediction of an Articulated Tug Barge

为获取铰接式顶推船(ATB)在浅水航行时的阻力特性,对其船组、驳船和顶推船在设计吃水和压载吃水状态进行深水阻力试验和不同水深时的浅水阻力试验,分别计算ATB船组、驳船和顶推船在设计吃水和压载吃水状态下遭遇不同水深h时的浅水阻力及其增幅,结果表明:设计吃水较于压载吃水状态,由于水深吃水比h/T较小,其浅水阻力及其增幅较大;在同一吃水状态,h/T越小,浅水阻力的增幅越大;ATB船组、驳船和顶推船由于结构形式的不同,其浅水阻力性能随水深弗劳德数的变化趋势有明显区别。

To obtain the shallow water resistance characteristics of articulated tug barge(ATB),the deep water and shallow water resistance performance of ATB,barge and tug at design draft and ballast draft were studied by model tests.The shallow water resistance and its increasement of ATB,barge and tug encountered different water depth h at design draft and ballast draft were tested respectively.The results showed that the shallow water resistance and its increasement were larger at design draft than ballast draft because the water depth draft ratio h/T was smaller;at the same draft,the smaller h/T was,the larger the increase of shallow water resistance would be;the shallow water resistance performance of the ATB,barge and tug varied significantly with the trend of water depth Froud number because of the different structural forms.