摘要
为了估算救生艇在风浪中的漂移速度,在船模拖曳水池中进行艇用海锚水阻力试验研究。海锚漂移速度(即拖车拖曳速度)范围为0.3～1.5 m/s,共7档,锚索长度为10～25 m,共4档。试验结果表明,海锚阻力大体上与速度的二次方成正比,且锚索越长,海锚阻力越大。在试验数据的基础上,运用最小二乘法给出估算海锚阻力的经验公式。
In order to determine the drift speed of lifeboat in wind, a 你 experiment was carried out in a towing tank to investigate the hydraulic resistances of sea anchor for lifeboat use. The sea anchor was towed by the carriage at 7 speeds, which vary from 0. 3 to 1.5 m/s. The length of sea anchor hawser was selected in 4 grades, from 10m to 25m. The experimental results showed that the drag of sea anchor is mostly proportional to the square of drift speed, and the longer the hawser is, the greater the resistance is. Based on the tested data, empirical formulas for the hydraulic resistance estimate are obtained by least square method.
出处
《船海工程》
2010年第4期31-33,共3页
Ship & Ocean Engineering
基金
浙江省重大科技攻关项目(2007C11039)
关键词
救生艇
海锚
水阻力
试验
拖曳水池
lifeboat
sea anchor
hydraulic resistance
experiment
towing tank
