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.

• 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。