Development of a Visual Method to Track the Movement of Hydrogen Bubbles in a Laboratory Flume

by Athanasios N. Papanicolaou, Virginia Polytechnic Inst and State, Univ, Blacksburg, United States,
Panayiotis Diplas, (M.ASCE), Virginia Polytechnic Inst and State, Univ, Blacksburg, United States,



Document Type: Proceeding Paper

Part of: Fundamentals and Advancements in Hydraulic Measurements and Experimentation

Abstract: The current study proposes a visual method for tracking the hydrogen bubbles position with time in a 2-D space. The experiment is filmed from above with a video camera. The obtained movie is imported into a video recorder for its timing process and then is digitized using a SGI Indigo workstation to create a movie file. A video grabber is used to transfer fifteen frames per second to a Sun workstation for their image development. From this process the spatial coordinates of hydrogen bubbles can be obtained in sequential frames and plots of several bubbles' pathlines can be drawn.

Subject Headings: Imaging techniques | Hydrogen | Tracking | Cameras | Frames | Flumes | Computing in civil engineering | Signal processing

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