一种改进诱导因子计算方法的叶素动量理论体积力模型  

A BEMT body-force method based on improved induct factor calculation method

作　　者：王明哲 王建华[1,2] 万德成[1,2] WANG Ming-zhe;WANG Jian-hua;WAN De-cheng(Computational Marine Hydrodynamics Lab(CMHL),Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学船海计算水动力学研究中心(CMHL),上海200240 [2]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《船舶力学》2024年第1期1-9,共9页Journal of Ship Mechanics

基　　金：国家重点研发计划资助项目(2019YFB1704205);国家自然科学基金资助项目(51809169)。

摘　　要：叶素动量理论体积力模型作为能够替代真实螺旋桨的一种体积力形式,在模拟螺旋桨以及船桨相互作用问题中具有较大的应用潜力。为了处理基于理想流体假设的传统叶素动量理论在与粘性求解器耦合过程中不能在较大工况范围内准确代表真实螺旋桨模型的问题,本文提出一种基于真实螺旋桨诱导因子分布的改进方法,并进行KP505螺旋桨体积力模型在J=0.4~0.8五种进速条件下的敞水试验模拟。本文将敞水性能、桨载荷分布与诱导速度场的体积力模拟结果与真实螺旋桨模型进行了对比,结果表明改进后的体积力模型预报敞水性能误差在各进速下最大值为1.05%,且体积力模型诱导速度场可以反映真实螺旋桨尾流的动量输运。As a kind of body-force model capable of replacing real propellers,the Blade Element Momentum Theory(BEMT)has a great application potential in simulating propeller performance and hull-propeller inter-action.In order to deal with the problem that the traditional BEMT based on the ideal fluid hypothesis cannot accurately represent the real propeller model in a wide range of working conditions when coupling with the viscosity solver,an improved induct factor calculation method based on the real propeller was proposed in this paper.Open-water simulation of KP505 propeller body-force model at J=0.4-0.8 was carried out,and the simulation results of the body-force model,such as open-water performance,propeller load distribution and induced velocity field,were compared with those of the real propeller model.The results show that the maximum error of open water performance is 1.05%at each advance ratio,and the induced velocity field of the improved body-force model can reflect the wake momentum transport of the real propeller.

关 键 词：诱导因子 叶素动量理论 体积力模型 敞水试验 数值模拟 

分 类 号：U661.1[交通运输工程—船舶及航道工程]