摘要
本文针对两种不同舟型的分置式舟桥,运用CFD方法进行方案评估和选优。数值计算基于RANS方程结合RNGk-ε两方程湍流模型,采用VOF方法处理自由面。控制方程使用有限体积法离散,对流项采用二阶迎风差分格式,扩散项采用中心差分格式。对两舟桥模型进行一系列速度下阻力、纵倾、升沉和兴波等水动力性能的数值计算,并与在中国船舶科学研究中心拖曳水池进行的模型试验进行了全面的比较,二者的结果是一致的。
Two pontoon raft models with different types of pontoon were studied for selecting a pontoon with higher hydrodynamic performance by using CFD method. The numerical simulation was carried out by RANS method and Renormalization Group （RNG） κ-ε two-equation turbulence model. The free surface was treated with VOF method. FVM was used to discrete the governing equations; the second-order upwind difference scheme was adopted for the convection term and the centric difference scheme for the dissipation term. The drag, trim, sinkage and wave of the two models were computed at different speeds. The computed results agree well with the experimental results carried out in the towing tank of CSSRC. It shows that CFD method is a valid tool for selecting pontoon form during design.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2005年第5期551-557,共7页
Chinese Journal of Hydrodynamics
关键词
CFD方法
舟型
优选
水动力性能
CFD method
type of pontoon
selection
hydrodynamic performance
