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Assessment of image correlation methods for the estimation of volume flow rates of subsea oil-gas plumes

Willert, Christian and Wereley, Steve (2010) Assessment of image correlation methods for the estimation of volume flow rates of subsea oil-gas plumes. 63rd Annual Meeting, American Physical Society, Division of Fluid Dynamics (DFD), 21.-23. Nov. 2010, Long Beach (CA), USA.

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Official URL: http://meetings.aps.org/Meeting/DFD10/Event/134412

Abstract

The recent uncontrolled release of oil and gas from a failed well into the Gulf of Mexico in the wake of the Deep Water Horizons accident illustrated that the actual release rates are difficult to assess with established surface observation methods. To a large extent this has to with the great depth (~1500m) at which the oil was released and its subsequent dispersal throughout the vertical water column. Streaming video of the failure site was provided by subsea remotely operated vehicles (ROV) and allow, in principle, the quantification of the release rate on the basis of motion analysis image processing methods. Several correlation based approaches, commonly used in particle image velocimetry (PIV), are investigated with regard to estimating the propagation velocity of large scale features in the visible interface between sea water and oil plume. Together with time scale (video frame rate) and length scale (pipe diameter) the interface velocity of the plume can be estimated. Assuming the plume to be a turbulent free jet the actual volume flow rate of the oil/gas mixture can be then be recovered with reasonable accuracy.

Document Type:Conference or Workshop Item (Speech)
Title:Assessment of image correlation methods for the estimation of volume flow rates of subsea oil-gas plumes
Authors:
AuthorsInstitution or Email of Authors
Willert, Christianchris.willert@dlr.de
Wereley, StevePurdue University
Date:November 2010
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:fluid flow measurement, optical flow, particle image velocimetry (PIV), image processing, feature based motion estimation
Event Title:63rd Annual Meeting, American Physical Society, Division of Fluid Dynamics (DFD)
Event Location:Long Beach (CA), USA
Event Type:international Conference
Event Dates:21.-23. Nov. 2010
Organizer:University of Southern California, California State University Long Beach, California Institute of Technology, University of California Los Angeles
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Dr.phil. Christian Willert
Deposited On:16 Dec 2010 13:38
Last Modified:16 Dec 2010 13:38

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