典型工况下回转体流噪声特性实验对比探究  

Study on Flow Noise Characteristics of Symmetrical Model Under Typical Working Conditions

作　　者：张平[1] 张宇文[1] 刘维[1] 侯二虎[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《计算机仿真》2012年第8期26-30,共5页Computer Simulation

基　　金：国家自然科学基金(9140A14020507HK03)

摘　　要：研究潜艇流水孔阻力及噪声影响,针对对艇体流噪声特性的影响,根据回转体声辐射以及声绕射理论,对水下航行器回转体模型的光体模型、底部进水孔模型、纵缝模型以及全孔模型进行了流噪声数值仿真。针对三种不同的来流速度研究四组模型流噪声的速度特性。结果表明,四组模型之间噪声级的从高到低依次为全孔模型、纵缝模型、底部进水孔模型以及光体模型,并与水洞实验数据相比较,结果相吻合,为水下航行器流水孔流噪声的研究提供了参考。For the purpose of researching the influence of submarine＇s weep hole on characteristics of flow noise, the paper conducted a simulation study on flow noise＇s numerical value of axially symmetrical models including rota- tional model, light model, bottom water inlet holes model, longitudinal joint model and full hole model by focusing on the submarine＇s weep hole, compared with submarine model made by defence advanced research projects agency of the department of defense, and based on theories of sound radiation and sound diffraction of axially symmetrical mod- el. The following conclusions were drawn according to the study on the speed characteristics of four models＇ flow noise on the basis of three different flow speeds defined by axially symmetrical model ： after comparison, the noise levels of the four models from the high to the low are full hole model, longitudinal joint model, bottom water inlet holes model and light model, compared with the experimental data. The result is the same, which provides references for researc- hing the weep hole＇s flow noise of underwater vehicles.

关 键 词：回转体 湍流模型 数值模拟 流噪声 实验 对比 

分 类 号：TN911[电子电信—通信与信息系统]