漕渡门桥航行水阻力和绕流场的数值预报  

Numerical prediction of water-drags and flow fields for ferrying raft

作　　者：潘小强[1] 沈庆[1] 陈徐均[1] 吴广怀[1] 

机构地区：[1]解放军理工大学工程兵工程学院,江苏南京210007

出　　处：《解放军理工大学学报（自然科学版）》2005年第4期363-368,共6页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50309018).

摘　　要：为了进行漕渡门桥水动力性能的研究,利用CFD(computationalfluiddynamics)商用软件作为计算工具,用有限体积法离散控制方程,分别对带式和分置式漕渡门桥模型,在不同速度下航行时的水阻力和绕流场进行了数值求解。用重正化群k-ε湍流模型计算门桥壁面边界层流动,流体体积函数方法进行自由表面波形的数值追踪。计算结果与船舶拖曳水池阻力试验数据相比,具有良好的精度。该数值计算方法可作为研究门桥水动力性能方法的重要补充。By using CFD commercial software to investigate the hydrodynamic performance of the ferrying rafts, the governing equations were discretized in finite volume method and a series of numerical simulations were carried out for flow fields and water-drags for two ferrying raft models. The turbulence and free-surface motion were simulated by solving RNG （renormalization group） k-ε turbulence model and fluid volume fraction equation respectively. And in the numerical simulations two styles of raft model were handled, i.e. , the ribbon raft and multi-hull raft. Comparison of the simulated results with the experimental data shows that the simulated results are credible. The numerical method can be the important complement to the study on ferrying raft hydrodynamics.

关 键 词：漕渡门桥 水阻力 绕流场 数值预报 

分 类 号：U661.3[交通运输工程—船舶及航道工程]