深水网箱沉子在纯流作用下的水动力特性  

A study on the hydrodynamic characteristics of spheral sinkers and circular cylinder sinkers under pure currents

作　　者：李春柳[1] 张怀慧[1] 陈小山 

机构地区：[1]大连水产学院土木工程学院 [2]赣州市水利电力勘察设计院,江西赣州341000

出　　处：《大连水产学院学报》2006年第1期64-67,共4页Journal of Dalian Fisheries University

基　　金：辽宁省教育厅攻关计划项目(20102138)

摘　　要：根据物模试验得到球形和柱形沉子的受力,计算并分析水阻力系数及其变化特性。试验结果表明:具有自由运动状态的球形沉子的水阻力系数比固定时球体的水阻力系数大;柱形沉子的水阻力系数与雷诺数及形状参数有关,且在同一雷诺数下,柱形沉子的水阻力系数显著大于球形沉子的水阻力系数。Based on the physical model tests, the forces acting on spheral sinkers and circular cylinder sinkers under pure current were studied. The drag force coefficients of spheral sinkers and circular cylinder sinkers were calculated and the factors affected on them were analyzed. The experimental result showed that the drag force coefficients of spheral sinkers were bigger than the one commonly used due to its motion under current conditions and had significantly related with Renault number. With the same Renault number, the drag force coefficients of circular cylinder sinker were apparently bigger than those of spheral sinkers and correlated with the Renault number and geometry shape.

关 键 词：莫里森公式 水阻力系数 球形沉子 柱形沉子 

分 类 号：S972.1[农业科学—捕捞与储运] TV131.2[农业科学—水产科学]