哈尔滨工程大学学报2013，Vol.34Issue(1)：92-97,6.DOI:10.3969/j.issn.1006-7043.201206013
FBM湍流模型水翼空化绕流数值研究
Numerical simulation on cavitating flow around hydrofoil with filter-based turbulence model
摘要
Abstract
For the purpose of accurately simulating the unsteady characteristics of cloud cavitations shedding, the research focus was first introducing the hybrid density correction function to build a filter-based turbulence model (FBM) based on the independent spatial filter scale. By coupling the mass transport-based cavitation model, the cavitating flows around a Clark-y type hydrofoil, were numerically simulated by using the RNG k-e turbulence model and the FBM, respectively. Also, the parameters of flow field and dynamic characteristics, such as time-averaged velocity field under the typical conditions, the time-varying cavitation form under cloud cavities conditions and the lift and drag coefficients of hydrofoil, were obtained and compared with the experimental results. The results indicate that the two types of turbulence models are slightly different on the prediction of the steady cavitating flow of the hydrofoil, and the RNG k-s turbulence model fails to capture the unsteady flow characteristics of cloud cavitating flow. However, the FBM can better accurately simulate the details of the cloud cavitations periodic shedding by regulating the turbulent viscosity of the multiphase flow field.关键词
空化流/滤波器湍流模型/湍流粘度/云空泡脱落Key words
cavitating flow/ filter-based turbulence model/ turbulent viscosity/ cloud cavitation shedding分类
建筑与水利引用本文复制引用
郜冶,刘乾坤,陈宇翔..FBM湍流模型水翼空化绕流数值研究[J].哈尔滨工程大学学报,2013,34(1):92-97,6.基金项目
国家自然科学基金资助项目(10972063). （10972063）
