Measurement of free surface elevation and velocity surrounding a surface piercing foil

James J Schock, University of Rhode Island

Abstract

Validation of sea keeping prediction programs is typically performed using experimentally obtained velocity and free surface elevation data. Traditionally this data is time computationally expensive to obtain due to issues with calibration, the number of the experiments required to develop the volume in question or the significant processing involved in calculating the flow dynamics. This paper describes two methods which could be used to obtain both velocity and free surface elevations surrounding a surface piercing foil. Both methods use Stereo Particle Image Velocimetry (SPIV) to measure the velocity of the flow and a GoPro camera to measure the free surface elevations. The first method is performed using a vertical laser sheet which is in plane with the foil. The second method rotates the vertical laser sheet such that the foil is orthogonal to the laser sheet. The two methods are compared using dynamic mode decomposition.

Subject Area

Engineering|Ocean engineering

Recommended Citation

James J Schock, "Measurement of free surface elevation and velocity surrounding a surface piercing foil" (2016). Dissertations and Master's Theses (Campus Access). Paper AAI10188436.
http://digitalcommons.uri.edu/dissertations/AAI10188436

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