潜艇流水孔排水与进水过程数值仿真研究  

Numerically Simulating Three-Dimensional Model of Water Hole of Submarine Using Large Eddy Simulation (LES) Turbulence Model

作　　者：孟生[1,2] 张宇文[1] 张平[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072 [2]中国船舶重工集团公司719所,湖北武汉430064

出　　处：《西北工业大学学报》2011年第2期257-262,共6页Journal of Northwestern Polytechnical University

摘　　要：以潜艇流水孔为研究对象,基于大涡模拟(LES)对潜艇流水孔三维模型进行数值模拟,比较排水和进水过程中潜艇航行阻力以及流噪声水平的差异。结果表明,潜艇排水过程呈现负阻力,对航行起助推作用。而进水过程阻力表现为正阻力,对航行起阻碍作用。排水过程较进水过程拥有更高的噪声级,流水孔位置处流噪声差异主要体现在低频段,高频段两者差异较小。可为潜艇流水孔的设计提供参考。Sections 1 and 2 of the full paper explain how to use LES turbulence model to do numerical simulation.Section 3 presents numerical simulation results,given in Tables 3 through 7 and Figs.6 and 8,and their analysis.Subsection 3.1 is entitled water hole resistance characteristics analysis;subsection 3.2 is entitled water hole flow noise characteristics analysis.Section 4 presents three preliminary conclusions,whose core consists of： ＂The process of drainage presented negative resistance which brought in boosting effect to navigation.But the process of inflow presented positive resistance and baffled the navigation.The process of drainage owned a higher noise level than process of inflow.The differences of flow noise in water hole position were mainly reflected in low frequency,less differences in high frequency.＂

关 键 词：潜艇 数值模拟 大涡模拟 流噪声 排水 进水 流水孔 

分 类 号：TN911[电子电信—通信与信息系统]