垂直微结构湍流剖面仪振动源及减振方法分析  

Vibration source analysis and vibration reduction for a vertical microstructure turbulence profiler

作　　者：兰世泉[1] 刘玉红[1] 王延辉[1] 刘进[1] 王子龙[1] 

机构地区：[1]天津大学机械工程学院,天津300072

出　　处：《振动与冲击》2012年第18期5-9,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金(50835006);国家863计划项目(2010AA09Z102)

摘　　要：垂直微结构湍流剖面仪(简称垂直剖面仪)是获取海水剪切流数据最有效的测量平台,对于海洋科学研究具有重要意义。简要介绍了垂直剖面仪的国内外发展现状,根据垂直剖面仪测量原理及海试结果,分析、总结了影响剖面仪测量精度的因素,重点讨论了剖面仪振动噪声的来源及降低其对剖面仪测量精度影响的方法。在综合分析剖面仪振动源的基础上,为减小剖面仪振动对测量精度的影响,提出了一种全新的传感器搭载方案,理论分析及计算流体力学仿真结果表明,提出的传感器搭载方案可有效降低剖面仪振动对测量精度的影响。A vertical microstructure turbulence profiler simply referred to as a vertical profiler is the most effective measurement platform to obtain shear flow in ocean and is very important for marine scientific research. Here, the developments of the vertical profiler at home and abroad was briefly introduced. According to the principle of the vertical profiler and the results of sea tests, the factors affecting the profiler measurement accuracy were summarized. Then, the sources of vibration in a vertical profiler and its vibration reduction methods were focused. Based on the analysis for the sources of vibration in the vertical profiler, a new designing scheme of the vertical profiler was proposed, i. e. , a shear probe was equipped around the center of the profiler＇s oscillation to reduce the effect of the profiler vibration on its measurement accuracy. The results of the theoretical analysis and the computational fluid dynamics simulation indicated that the proposed shear probe loaded method can effectively reduce the influence of the profiler vibration on its measurement accuracy.

关 键 词：垂直微结构湍流剖面仪 振动 剪切流测量 测量精度 

分 类 号：TH764[机械工程—仪器科学与技术]