考虑旋转和曲率修正的螺旋桨梢涡流场模拟  

Numerical simulation of propeller tip vortex flow with rotation-curvature correction

作　　者：熊鹰[1] 韩宝玉[1] 刘志华[1] 

机构地区：[1]海军工程大学船舶与动力学院,湖北武汉430033

出　　处：《华中科技大学学报（自然科学版）》2012年第2期27-30,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51079157)

摘　　要：应用显式代数雷诺应力湍流模型对螺旋桨尾流中梢涡流场分布进行了数值研究,为了避免过高地预报梢涡涡核内湍流黏性耗散,对湍流模型进行了旋转和曲率修正.应用全六面体网格对螺旋桨计算域进行网格划分,为了避免数值离散误差,对梢涡区域进行了网格加密处理.计算结果表明:提出的尾流中梢涡流场分布数值模拟方法能够准确预报螺旋桨梢涡流场的分布及涡核位置,并准确反映了梢涡形成和发展过程中梢涡内主涡和次涡的关系,与实验测量结果基本一致.Propeller tip vortex flowfield in the wake was calculated using explicit algebraic Reynolds stress model （EARSM）. In order to avoid over-prediCting the eddy viscosity along the vortex core, the rotation-curvature correction was adopted to the turbulence model. A single-block structure gridwas generated for the current computational domain. In order to reduce the discrete error induced by grid, the mesh refinement was applied to the area of tip vortex core in numerical simulation. The cal- culated results show that the numerical method can exactly predict the velocity distribution, vortexcore location and primary and secondary vortex structures in tip vortex formation and evolution, and agree with the test results.

关 键 词：螺旋桨 梢涡流场 梢涡空泡 显式代数雷诺应力模型 旋转和曲率修正 涡核 

分 类 号：U661.31[交通运输工程—船舶及航道工程]