【作者】 黄国富； 洪方文；

【Author】 HUANG Guo-fu,HONG Fang-wen (China Ship Scientific Research Center)

【机构】 中国船舶科学研究中心上海分部； 中国船舶科学研究中心；

【摘要】 运转于水下航行体尾部充分发展的厚边界层内的导管推进器与船艉之间存在强干扰作用。本研究基于二维轴对称体的RANS方程求解建立了一种水下航行体导管推进器推力减额的数值预报方法,其中导管内的螺旋桨由体积力代替。经多轮模型试验验证,该方法预报的推力减额结果与快速性模型试验结果吻合良好。更多还原

【Abstract】 The design of a ducted propulsor operating within the thick boundary layer developed near the stem of an underwater revolution body is rather a complex problem due to strong interaction between the propeller and stem.The RANS equation solver for a 2D axisymmetric body is selected to compute the flow field around the body and the ducted propulsor,and then to computed thruster deduction caused by the ducted propulsor.The rotor is modeled by body force distribution.The experimental results for several ship models with ducted propulsor show that the numerical results of thruster reduction by CFD agree well with experimental ones.更多还原