基于体积力法的船体自航性能数值预报

为实现船舶自航性能的快速预报，应用计算流体力学（CFD）方法，采用一种便捷的描述型体积力模型替代螺旋桨的作用，分别在无舵实船自航点和有舵模型自航点2种条件下对MOERI(Korea Research Institute for Ships and Ocean Engineering)集装箱船(KCS)的黏性自由面流场进行了数值模拟.依据等推力法、敞水计算和螺旋桨敞水曲线等，计算船体自航性能相关参数.计算结果与试验结果吻合良好.研究结果表明，使用描述型体积力法可以便捷而较为准确地预报船体自航性能.

Numerical Prediction of Self-propulsion with a Body-force Propeller Model

In order to predict the self-propulsion quickly, based on the computational fluid dynamics (CFD) method, this paper performed numerical simulation of self propulsion for MOERI container ship(KCS) at ship point without rudder and at model point with rudder, in which the propeller was simulated by using a simplified prescribed body-force propeller model to give a model that determined propeller-hull interaction. The method to obtain self-propulsion factors was based on equality thrust method, open water computation and experimental open water curves. A comparison of calculated and measured data shows a fair agreement, indicating that the prescribed body-force propeller model can accurately and quickly predict the self propulsion. Key words：