Implications of asymmetric beam geometry for convergent acoustic Doppler profilers

Conference · Tue Aug 13 04:00:00 EDT 2019

DOI:https://doi.org/10.1109/CWTM43797.2019.8955290· OSTI ID:1604779

Harding, Samuel F. ^[1]; Sellar, Brian ^[2]; Dorward, Mairi ^[2]

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1. BATTELLE (PACIFIC NW LAB)
2. University of Edinburgh

The focus of this research is to develop a measurement instrument to characterize complex flows at spatial and temporal resolutions pertinent to understanding hydrodynamic loads in zones of fluid-structure interaction. Foundational work has demonstrated that flow velocities can be measured at a fixed focal point using a convergent array of acoustic Doppler profiling (C-ADP) instruments. As an extension of this concept, the following approach describes an application of the technology to facilitate 3D velocity measurements at a dynamically adjustable focal point location. Furthermore, the ability to dynamically control the focal point location in real-time allows the instrument to survey velocities within a three-dimensional velocity field. The resulting configuration targets a combination of measurement fidelity and control that has not been achieved by existing remote flow measurement instrumentation in the marine environment.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1604779
• Report Number(s): PNNL-SA-147839
• Country of Publication: United States
• Language: English