Identification and analysis of the meandering of a fin-tip vortex using Proper Orthogonal Decomposition (POD)
用适当正交分解(POD)识别和分析鳍尖涡的弯曲
作者: Yunpeng XueChetan KumarSoon-Kong LeeMatteo GiacobelloPeter Manovski
作者单位: 1Defence Science & Technology Group, Victoria 3207, Australia
2Australian Maritime College, University of Tasmania, Tasmania 7248, Australia
3School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh, United Kingdom
刊名: International Journal of Heat and Fluid Flow, 2020, Vol.82
来源数据库: Elsevier Journal
DOI: 10.1016/j.ijheatfluidflow.2020.108556
关键词: SPIVProper Orthogonal DecompositionVortex meanderingMeandering correction
原始语种摘要: Abstract(#br)The meandering of a vortex exists in a broad range of engineering applications and can lead to flow instability and other undesirable characteristics. Compared to a static vortex, measurement of a meandering vortex can result in a ‘smeared’ mean-flow field and increased levels of turbulence at the centre of the vortex. A case study was performed here on the meandering nature of a fin-tip vortex generated by a manoeuvring submarine. From stereoscopic particle image velocimetry (SPIV) measurements, it is possible to remove the meandering by shifting each instantaneous velocity field so as to produce a common centre for the vortex. In this paper, a snapshot Proper Orthogonal Decomposition (POD) technique is used to capture the dominant large-scale coherent structures (from...
全文获取路径: Elsevier  (合作)
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影响因子:1.581 (2012)

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关键词翻译
关键词翻译
  • meandering 弯曲化
  • POD Power On Diagnostics
  • vortex 涡旋
  • analysis 分析
  • velocity 速度
  • correction 校正
  • component 成分
  • centre 电话总机
  • fluctuating 变动
  • stereoscopic 立体的