Acquisition of the tide-induced Lagrangian residual current field by the PIV technique in the laboratoryReport as inadecuate




Acquisition of the tide-induced Lagrangian residual current field by the PIV technique in the laboratory - Download this document for free, or read online. Document in PDF available to download.

Ocean Dynamics

, Volume 63, Issue 11–12, pp 1181–1188

First Online: 25 September 2013Received: 02 March 2013Accepted: 12 September 2013

Abstract

In this paper, a new particle image velocimetry PIV-based measurement method is proposed to obtain the high-resolution tide-induced Lagrangian residual current field in the laboratory. A long gravity wave was generated to simulate the tide in a narrow tank full of water laden with PIV particles. Consecutive charge-coupled device CCD images were recorded with the studied layer illuminated with a laser beam. Two images separated by one tidal period were processed by applying the pattern-matching algorithm to get the horizontal tide-induced Lagrangian residual current field. The results coincide with sporadic results from the traditional surface-float tracing method, but with much higher spatial resolution and accuracy. Furthermore, it is found that the direct acquisition of the Lagrangian residual current may reduce the error at least by one order compared with those acquisition methods that require the detailed information of the tidal cycle.

KeywordsLagrangian residual current Particle image velocimetry Eulerian residual velocity Stokes’ drift velocity Mass transport velocity Responsible Editor: Birgit Andrea Klein

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Author: Tao Wang - Wensheng Jiang - Xu Chen - Shizuo Feng

Source: https://link.springer.com/







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