Structure Optimization for Main Body of Vertical Microstructure Profiler

Abstract

Abstract:

Vertical microstructure profiler (VMP) is a most common and effective platform to obtain data of microstructure turbulence in the ocean. The FIV is the main factor affecting the measurement precision of the VMP. Factors influencing the FIV of the VMP were analyzed herein. Based on the numerical simulation platform of ANSYS-Workbench, the FIV of the VMP with various shapes and structure parameters was calculated using algorithm of two-way fluid-structure coupling. Aimed to decrease the FIV, the main body shape and the structure parameters of the main body were optimized respectively. The measurement precision of the optimized profiler is improved by 57%. The present investigation provides scientific guidance for designing the VMP.

Key words: vertical microstructure profiler(VMP), measurement precision, flow-induced vibration(FIV), fluid-structure coupling, structure optimization

摘要：

垂直微结构剖面仪是获取海洋微结构湍流数据最有效的测量平台，其下降过程中产生的流致振动是影响剖面仪测量精度的主要因素。分析了影响剖面仪流致振动的因素，基于ANSYS-Workbench数值仿真平台，采用双向流固耦合算法，得到了剖面仪流致振动与其结构外形及参数之间的关系。在此基础上，以减小流致振动为目标，采用单目标优化方法分别对剖面仪主体结构外形及结构参数进行了优化，优化后的剖面仪测量精度提高了57%。研究成果为垂直微结构剖面仪及类似结构的合理设计提供了理论指导。

关键词: 垂直微结构剖面仪, 测量精度, 流致振动, 流固耦合, 结构优化

CLC Number:

TH113

Jiang Xin, Liu Yuhong, Song Shijun, Wang Yanhui. Structure Optimization for Main Body of Vertical Microstructure Profiler[J]. China Mechanical Engineering, 2015, 26(1): 97-101.

姜欣, 刘玉红, 宋诗军, 王延辉. 垂直微结构剖面仪主体结构优化[J]. 中国机械工程, 2015, 26(1): 97-101.

References

[1]魏皓,武建平, 张平. 海洋湍流模式应用研究[J].青岛海洋大学学报, 2001, 31(1):7-13.
Wei Hao, Wu Jianping, Zhang Ping. Review on Turbulence Closure Models in Ocean Hydrodynamics[J]. Journal of Ocean University of Qingdao,2001, 31(1):7-13.
[2]Osborn T R.Vertical Profiling of Velocity Microstructure[J]. Journal of Physical Oceanography, 1974, 4: 109-115.
[3]Polzin K L, Montgomery E T. Microstructure Profiling with the High Resolution Profiler[C]//Proceedings of Microstructure Sensor Workshop.Massachusetts,1996：1-16.
[4]Prandke H. Microstructure Profiler to Study Mixing and Turbulent Transport Processes[C]//Oceans'98 Conference Proceedings.Nice,1998:179-183.
[5]Schmitt R W, Toole J M, Koehler R L. The Development of a Fine and Microstructure Profiler[J]. Journal of Atmospheric and Ocean Technology,1988,5(4):484-500.
[6]Wolk F, Yamazaki H, Seuront L, et al. A New Free-fall Profiler for Measuring Biophysical Microstructure[J]. Journal of Atmospheric and Ocean Technology, 2002, 19(5): 780-793.
[7]Lueck R G,Wolk F, Yamazaki H. Oceanic Velocity Microstructure Measurements in the 20th Century[J]. Journal of Oceanography, 2002,58:153-174.
[8]Moum J N, Gregg M C, Lien R C,et al. Comparison of Turbulence Kinetic Energy Dissipation Rate Estimates from Two Ocean Microstructure Profilers[J]. Journal of Atmospheric and Ocean Technology,1995,12:346-366.
[9]张大涛, 王延辉, 王树新. 湍流剖面仪系统动力学分析与实验研究[J].海洋技术, 2006, 25(1): 38-42.
Zhang Datao, Wang Yanhui, Wang Shuxin. Dynamics Analysis and Experiment Research for Shear Profiler[J].Ocean Technology, 2006, 25(1): 38-42.
[10]王子龙, 王延辉, 陈宝阔, 等. 海洋微结构湍流垂直剖面仪设计与试验[J].天津大学学报，2012, 45(3): 279-284.
Wang Zhilong, Wang Yanhui, Chen Baokuo, et al. Design and Application of Ocean Microstructure Turbulence Vertical Profiler[J]. Journal of Tianjin University,2012, 45(3): 279-284.
[11]兰世泉, 刘玉红, 王延辉, 等. 垂直微结构湍流剖面仪振动源及减振方法分析[J].振动与冲击, 2012, 31(18): 5-9.
Lan Shiquan, Liu Yuhong, Wang Yanhui, et al. Vibration Source Analysis and Vibration Reduction for a Vertical Microstructure Turbulence Profiler[J]. Journal of Vibration and Shock,2012, 31(18): 5-9.
[12]Miller J B, Gregg M C, MillerV W.Vibration of Tethered Microstructure Profilers[J].Journal of Atmospheric and Oceanic Technology, 1989, 6(6): 980-984.
[13]Liu Yuhong, Lan Shiquan, Wang Yanhui,et al. A Numerical Method for Calculating the Flow-induced Vibration of the Microstructure Profiler[C]//Oceans'12 MTS/IEEE.Virginia Beach,2012: 1-5.
[14]Prandke H,Stips A. Test Measurements with an Operational Microstructure-turbulence Profiler: Detection Limit of Dissipation Rates[J]. Aquatic Sciences, 1998, 60: 191-209.

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