Matlab仿真在舰艇水下辐射噪声数值预报教学中的应用  

Study on Teaching of Numerical Prediction of Underwater Radiated Noises of Ship and Submarine Based on Matlab Modeling

作　　者：杨琼方[1] 王永生[1] 魏应三[1] 庞之洋[1] 

机构地区：[1]海军工程大学动力工程学院,湖北武汉430033

出　　处：《实验室研究与探索》2014年第9期83-88,共6页Research and Exploration In Laboratory

基　　金：国家自然科学基金资助项目(No.51009144);水下测控技术重点实验室延伸性发展基金资助项目(YS0C261301)

摘　　要：搭建一种基于Matlab仿真的多极子声源和螺旋桨辐射噪声动态可视化教学演示平台。该平台能够动态显示单个和多个多极子声源辐射声场、墙面反射下的多极源辐射声场、有限长导管中的多极源辐射声场、螺旋桨促动盘辐射声场、真实螺旋桨脉动力源辐射声场及其线谱谱级值,是舰艇水下辐射噪声四大类噪声源数值分析平台之一。借助该平台,研究生学员可以直观、动态地了解简单和复杂声源的辐射噪声空间分布特征及其声波的传播规律,并能直接分析不同声源参数对辐射声场的影响作用。教学实践表明,该平台可以有效弥补动力工程专业学员噪声背景知识较少的不足,加深了学员对舰艇水下辐射噪声的理解,也调动了学员借助专业噪声分析软件预报方案设计阶段舰艇水下辐射噪声性能的积极性,为进一步深入研究低噪声舰艇设计奠定了基础。A dynamical novel demonstration platform for teaching numerical prediction of underwater radiated noises of ship and submarine based on Matlab modeling is constructed.Four kinds radiated noises that are fields of single and distributed multipole sources with or without the reflection of wall,within the finite duct,the propeller disk plane noise source,and real propeller fluctuated integrated force and its noise level are dynamically visualization and simulation on the platform.Benefiting from this platform,the simple and complex noise sources radiated noise fields and the acoustic wave propagation are directly and dynamically shown to the master candidates.In addition,the effects of different noise source parameters on radiation can be analyzed directly in the platform.The teaching practices prove that this platform compensates well the lack of background noise knowledge to the students,and it enlarges obviously the understanding of underwater radiated noises.Additionally,it activates the enthusiasm of students to predict the noise performances of ship and submarine on early stages,and the going low noise design of naval ship is the next step.

关 键 词：舰艇水下辐射噪声 多极子声源 螺旋桨噪声 声场可视化 噪声预报 

分 类 号：U664.3[交通运输工程—船舶及航道工程] TP319[交通运输工程—船舶与海洋工程]