迭代型体积力法预报船舶推进性能

摘要/Abstract

摘要：

摘要：应用计算流体动力学的方法（CFD），采用迭代型体积力法，耦合螺旋桨势流涡格法（VLM）和船体周围黏性流场RANS（Reynolds Averaged NavierStokes)方程，代替真实螺旋桨的作用，即将VLM法计算得到的推力和转矩分布插值后作为源项加载到RANS方程中，将RANS方程得到的流速扣减诱导速度后得到实效伴流作为VLM法计算的进流条件，计算得到新的推力和转矩值，重复迭代直至螺旋桨的推力变化达到收敛要求.在无舵情况下对集装箱船KCS(KRISO Container Ship)的自由面黏性流场进行了数值模拟,计算结果与试验结果吻合良好.整个计算过程由集成了VLM和RANS方程的程序自动完成.研究结果表明，迭代型体积力法可以快速准确地预报船桨干扰下船体的推进性能.

关键词: , 船舶推进性能, 迭代型体积力法, 升力面, 耦合计算

Abstract:

Abstract： The research of self-propulsion performance plays a vital role in the ship-design and the development of the novel ship. To achieve the prompt prediction of propulsive performance, this paper simulated hull/propeller interaction using a convenient prescribed bodyforce method and computational fluid dynamics (CFD).The free surface viscous flow around MOERI container ship (KCS) was simulated at the selfpropulsion point. An iterative bodyforce method which couples the Vortex Lattice Method (VLM) of the propeller lifting surface with the RANS solver was presented. Both the force and moment computed by VLM were input to RANS as the source term while the inflow to the propeller computation from the viscous velocity subtracted the induced velocity at the propeller plane. The iterations between the VLM and RANS were prosecuted until the propeller thrust and torque coefficients were converged within a specific tolerance. All the progress was done automatically by an integrated program which coupled RANS/VLM solvers. The computed results agree well with the measured data. The method adopted in this paper predicts the performance of selfpropulsion accurately and efficiently.

Key words: propulsive performance, iterative bodyforce method, lifting surface, coupled calculation

中图分类号:

U 661.33

郑洋a，陈作钢b，代燚b. 迭代型体积力法预报船舶推进性能[J]. 上海交通大学学报（自然版）, 2015, 49(02): 269-274.

ZHENG Yanga,CHEN Zuogangb,DAI Yib. Numerical Prediction of Propulsive Performance with an Iterative Body-Force Propeller Model[J]. Journal of Shanghai Jiaotong University, 2015, 49(02): 269-274.

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