[1]朱志峰,方世良,王晓燕.船舶螺旋桨黏性空化流场数值方法[J].东南大学学报(自然科学版),2010,40(6):1146-1151.[doi:10.3969/j.issn.1001-0505.2010.06.004]
 Zhu Zhifeng,Fang Shiliang,Wang Xiaoyan.Nnumerical method for viscous cavitating flow around ship propeller[J].Journal of Southeast University (Natural Science Edition),2010,40(6):1146-1151.[doi:10.3969/j.issn.1001-0505.2010.06.004]
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船舶螺旋桨黏性空化流场数值方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第6期
页码:
1146-1151
栏目:
信息与通信工程
出版日期:
2010-11-20

文章信息/Info

Title:
Nnumerical method for viscous cavitating flow around ship propeller
作者:
朱志峰12 方世良1 王晓燕1
1 东南大学水声信号处理教育部重点实验室, 南京 210096; 2 安徽工业大学电气信息学院, 马鞍山 243002
Author(s):
Zhu Zhifeng12 Fang Shiliang1 Wang Xiaoyan1
1 Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education, Southeast University, Nanjing 210096, China
2 School of Electrical Engineering and Information, Anhui University of Technology, Maanshan 243002, China
关键词:
数值模拟 空化 纳维-斯托克斯方程 螺旋桨 湍流
Keywords:
numerical simulation cavitation Navier-Stocks equations propeller turbulence
分类号:
X502
DOI:
10.3969/j.issn.1001-0505.2010.06.004
摘要:
以螺旋桨E779a为对象研究适合螺旋桨黏性空化流场的数值方法.基于黏性多相流理论,在均匀入流条件下数值求解纳维-斯托克斯(N-S)方程和空泡动力学方程组来预报螺旋推力系数KT轴向速度UX和蒸汽体积分数av.数值结果表明,增加螺旋桨盘面至压力出口的计算空间距离后KTUX的准确性提高了约3%.螺旋桨外围圆柱形规则区域用结构网格划分可以明显改善片空化的预报.对于相同网格策略,网格尺寸在一定范围内减小对片空化位置、KTUX的预报结果影响不大,但片空化程度预报的准确性提高23%.网格收敛指数表明网格无关性较好,标准k-ω模型使计算容易收敛,大涡模型可提高UX和湍流动能的预报精度.
Abstract:
The numerical method for viscous cavitating flow field was studied with propeller E779a. Based on viscous multiphase flow theory, Navier-Stokes(N-S)and Bubble Dynamics equations were solved to predict propeller thrust coefficient KT, axial velocity UX and vapor volume fraction av in an uniform inflow. The numerical results indicate that the accuracy of the predictions of KT and UX is improved by 3% with increasing the distance from propeller disk to pressure outlet in computational domain. A sheet cavitation is better predicted with the structured grid in outer domain with regular shape of column. For the same grid strategy, the size of grid cells decreased within certain limits has little influence on the prediction of position of the sheet cavitation, KT and UX, but enhances the accuracy of the prediction of the sheet cavitation degree by 23%. The grid convergence index demonstrates good grid dependence. The standard k-ω turbulence model makes calculation more convergent. The LES(large eddg simulation)improves the accuracy of the prediction of UX and turbulence kinetic energy.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 朱志峰(1972—),男,博士生; 方世良(联系人),男,博士,教授,博士生导师,slfang@seu.edu.cn.
基金项目: 国家重大基础研究发展计划资助项目(6131222).
引文格式: 朱志峰,方世良,王晓燕.船舶螺旋桨黏性空化流场数值方法[J].东南大学学报:自然科学版,2010,40(6):1146-1151. [doi:10.3969/j.issn.1001-0505.2010.06.004]
更新日期/Last Update: 2010-11-20