基于RANS方程的舟桥水阻力预报  

Resistance Prediction of a Pontoon by RANSE computations

作　　者：林铸明 潘志远[2] 傅世晓[2] 崔维成[2] 

机构地区：[1]总装工程兵科研一所,江苏无锡214035 [2]上海交通大学船舶与海洋工程学院,上海200030

出　　处：《水动力学研究与进展（A辑）》2004年第3期281-287,共7页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金重点资助项目(50039010)

摘　　要：　本文采用RANS方程及VOF模型计算绕舟桥的自由表面粘性流动。计算中使用RNGk-ε湍流模型结合非平衡壁面函数,自由液面的确定采用几何重建方法。讨论了数值计算中网格质量、时间步长对阻力预报结果的影响。计算结果与实验值的比较显示,只要合理地划分网格并选择恰当的控制参数,数值计算方法可以辅助实验方法,用于舟桥水动力性能的预报。In this paper, the turbulent flow around a pontoon including free surface is computed using the Reynolds Averaged Navier-Stokes Equations (RANSE)and Volume of Fluid(VOF)model. The RNGk-ε turbulence model with non-equilibrium wall function is employed. The Geometric Reconstruction Scheme is applied to determine the interface between air and water. The dependence of the resistance on grid quality and time step is inverstigated. The comparison with the experimental data shows that with rational grid resolution and variation of parameters, CFD can be the complement of experiments for predicting hydrodynamic performances of pontoons.

关 键 词：自由表面流动 RANSE 阻力 VOF 

分 类 号：U661.2[交通运输工程—船舶及航道工程]