| 喷水推进器进水流道内流场数值模拟与分析 |
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| 引用本文： | 常书平,王永生,庞之洋,丁江明.喷水推进器进水流道内流场数值模拟与分析[J].武汉理工大学学报(交通科学与工程版),2010,34(1):47-51. |
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| 作者姓名： | 常书平 王永生 庞之洋 丁江明 |
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| 作者单位： | 海军工程大学船舶与动力学院,武汉,430033 |
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| 摘 要： | 进水流道是喷水推进系统的关键部件之一，该部件性能优良与否直接影响到整个喷水推进系统工作性能的优劣．考虑到船底边界层对进水流道来流动量和动能的影响及喷水推进器各部件的相互作用，合理界定了喷水推进器数值计算所需的流场控制体，联用六面体结构化网格和四面体非结构化网格进行区域离散，选择κ-ε两方程湍流模型封闭RANS方程，采用稳态多参考系方法计算求解．分析和比较了船的航速和喷泵的转速对进水流道内流场的速度和压力分布的影响，评估了进水流道的出流均匀度、唇部最小压力点位置的偏移、空化可能性等多方面的性能．研究发现：航速的增加使流道出流变的不均匀，使唇部最小压力点的位置向下偏移；进水流道的出口、唇部和斜坡处是易发生空化的地方，应保证所在运行工况的三处静压力最小值均大于空化临界静压力值．
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| 关 键 词： | 船舶 喷水推进 进水流道 计算流体力学 数值模拟 |
Numerical Simulation and Analysis of Fluid Flow in Inlet of Waterjet Propulsion |
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| Chang Shuping Wang Yongsheng Pang Zhiyang Ding Jiangming.Numerical Simulation and Analysis of Fluid Flow in Inlet of Waterjet Propulsion[J].journal of wuhan university of technology(transportation science&engineering),2010,34(1):47-51. |
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| Authors: | Chang Shuping Wang Yongsheng Pang Zhiyang Ding Jiangming |
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| Institution: | College of Naval Architecture and Power/a>;Naval University of Engineering/a>;Wuhan 430033/a>;China |
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| Abstract: | Waterjet inlet is a critical component of waterjet propulsion system,whose performance can greatly affect accomplishment of the whole waterjet propulsion system.The influence of the hull's boundary layer and the interactions among components which make up of waterjet are taken into account,and a control volume of calculated fluid flow region of waterjet is defined and meshed by hexagonal structured and tetrahedral unstructured grids.The CFD code solves the RANS equations with MFR method and turbulent model ... |
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| Keywords: | ship waterjet propulsion inlet CFD numerical simulation |
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