Stopping maneuver is an important research topic in ship maneuverability. The stopping ability of ship is not only related to the hydrodynamic characteristics of hull, rudder and propeller, but also related to the capacity of main engine. However, there are few researches on the capacity of main engine under reversed propulsion condition. In the paper, a numerical water tank is established to simulate the propeller loads using the computational fluid dynamics (CFD) software STAR CCM+. The numerical model is firstly validated by experimental data, and then is used to investigate the propeller loads on a full-scale model with different ship speed and propeller speed. By dimensionless, the relations between the advance coefficient and the load coefficients are shown as J - K_T curves and J - K_Q curves. Furtherly, the flow structures near the propeller and the pressure on the propeller with different J values are investigated. The simulations reveal that the flow velocities induced by the reversed propulsion of the propeller is similar to the wake flow by ship with J = -0.49. That is the reason for the minimum points of J - K_T and J - K_Q curve occurring in cases with J = -0.49. Subsequently, the capacity of the main engine and the output load of the propeller are considered comprehensively. The relations between the ship speeds and the maximum output loads on the propeller are discussed in details.

停止操纵是船舶操纵性的重要研究课题。船舶的停止能力不仅与船体，舵，螺旋桨的水动力特性有关，而且与主机的能力有关。但是，关于反向推进条件下的主机容量的研究很少。在本文中，使用计算流体动力学（CFD）软件STAR CCM +建立了一个数值水箱来模拟螺旋桨负载。首先通过实验数据验证了数值模型，然后将其用于在不同船速和螺旋桨速度的全尺寸模型上研究螺旋桨载荷。通过无量纲，提前系数和负载系数之间的关系表示为J - K _T曲线和J - K _Q曲线。此外，研究了螺旋桨附近的流动结构以及具有不同J值的螺旋桨上的压力。仿真表明，由螺旋桨反向推进引起的流速类似于船舶的尾流，J = -0.49。这对的最小点的原因Ĵ - ķ _Ť和Ĵ - ķ _Q在例发生曲线Ĵ= -0.49。随后，综合考虑了主机的能力和螺旋桨的输出负载。详细讨论了船速和螺旋桨上最大输出负载之间的关系。