螺旋桨缠绕物切割装置对螺旋桨水动力性能影响

将螺旋桨缠绕物切割装置与螺旋桨作为组合推进器,并运用基于RANS方程的多参考系模型计算了加装切割装置对螺旋桨水动力性能的影响。计算结果表明,加装的切割装置对螺旋桨的敞水性能影响较小,在±2%左右;切割装置对螺旋桨叶面压力的影响在半径较小的叶切面上比半径较大的叶切面上明显;各叶切面上导边受到的影响最大。从总体上看,增加切割装置不足以对螺旋桨的空泡性能和噪声性能造成明显的影响。

Influence of entanglemant cutting equipment on propeller hydrodynamic performance

Regarding the propeller and entanglemant cutting equipment as a whole, this paper calculated the influence on the propeller hydrodynamic performance of propeller by MRF RANS equation. The results show that the influence on the open-water performance of propeller is within 2%;the farther the radial section distance from the axis of rotation is, the more obvious the influences on pressure of the blades are;the influence on pressure of the leading edge is the most obvious. In general, the influence on the cavitations and acoustic performance of propeller is small enough to be ignored.