Experimental evaluation of motion compensated ADV measurements for in-stream hydrokinetic applications

Author

VanZwieten, James H. ; Egeland, Matthew N. ; von Ellenrieder, Karl D. ; Lovenbury, James W. ; Kilcher, Levi

Author_Institution

Southeast Nat. Marine Renewable Energy Center, Florida Atlantic Univ., Boca Raton, FL, USA

fYear

2015

fDate

2-6 March 2015

Firstpage

1

Lastpage

8

Abstract

This study quantifies the impact of Inertial Measurement Unit (IMU) error on turbulence estimates calculated from motion compensated Acoustic Doppler Velocimeter (ADV) measurements. This analysis shows that IMU error can completely mask the turbulent spectra in the horizontal plane in low current areas (0.4 m/s) and reduce this range to 4-60 seconds in stronger tidal flows. However, even in an evaluated low current area (0.4 m/s) vertical spectra can be measure at periods between 1-60 seconds, with stronger current areas having a measureable frequency range with periods from 0.8-80 seconds.

Keywords

ocean waves; oceanographic techniques; wave power generation; Acoustic Doppler Velocimeter measurements; Inertial Measurement Unit error; horizontal plane; in-stream hydrokinetic applications; low current area vertical spectra; motion compensated ADV measurements; ocean current energy; resource assessment; tidal energy; turbulent spectra; Acceleration; Current measurement; Instruments; Measurement uncertainty; Sea measurements; Transducers; Velocity measurement; ADV; in-stream hydrokinetic; ocean current energy; resource assessment; tidal energy; turbulence;

fLanguage

English

Publisher

ieee

Conference_Titel

Current, Waves and Turbulence Measurement (CWTM), 2015 IEEE/OES Eleventh

Conference_Location

St. Petersburg, FL

Print_ISBN

978-1-4799-8418-3

Type

conf

DOI

10.1109/CWTM.2015.7098119

Filename

7098119