Title :
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
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;
Conference_Titel :
Current, Waves and Turbulence Measurement (CWTM), 2015 IEEE/OES Eleventh
Conference_Location :
St. Petersburg, FL
Print_ISBN :
978-1-4799-8418-3
DOI :
10.1109/CWTM.2015.7098119
