【摘要】 采用CFD技术研究船舶黏性流场,能提供迅速的、准确的和低成本的船舶水动力性能以及全面、精细的流场信息预报结果,将有望成为船舶航行性能预报和优化的主要手段之一。通过总结前人对各种湍流模型在流场计算中的应用研究,对船舶CFD中湍流模型的选择方法进行了讨论。并采用标准k-ε模型、RNGk-ε模型、Realizablek-ε模型、标准k-ω模型及SSTk-ω模型分别对集装箱船、油船和散货船绕流流场进行了数值计算,通过对流场分析及与试验结果比较得到了一些有意义的结论。更多还原

【Abstract】 Computational fluid dynamics(CFD) can be used to investigate ship flow field and hydrodynamics performance.It can reduce the research cost and provide much comprehensive flow information in a short time.In the future, the numerical method will become the primary method in predicting the powering performance and ship hull optimization.The experience in the study on turbulence model is summarized, and the choosing of turbulence model in CFD is discussed.The flow field around some ships, such as container ship, tanker and KVLCC ship, are investigated with standard k-ε turbulence model, RNG k-ε turbulence model, Realizable k-ε turbulence model, standard k-ω turbulence model and SST k-ω turbulence model.Compared with the experimental data, some significant conclusions are achieved.更多还原