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Concentration-Based Decomposition of the Flow around a Confined Cylinder in a UV Disinfection Reactor
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Material Type |
Article
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Author(s) |
Gandhi, Varun (Author)
Bryant, Duncan B. (Author)
Socolofsk, Scott A. (Author)
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Source Journal Info. |
Title:
Journal of Engineering Mechanics
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Volume/ Issue No.: 2015/DEC V.141 N.12
Call No.:620.1005 JEM Location: Periodicals & References Hall - 2nd floor
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Physical Description |
p ---
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Subject Area/ Descriptors |
Engineering
(39711)
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Abstract |
The proper orthogonal decomposition (POD) is applied to spatial concentration data, obtained using laser-induced fluorescence (LIF), for the flow around a confined circular cylinder (R=4,900R=4,900) and compared with their corresponding velocity and vorticity fields. The velocity, vorticity, and concentration modes identify the dominating coherent structures, i.e., shear layer rollup, instantaneous recirculation and von Karman vortex shedding. In the velocity and vorticity decomposition, instantaneous recirculation, and von Karman vortex shedding are represented in the highest energy modes. However, in the concentration decomposition, the most energetic modes represent the regions with strong concentration intermittency, i.e., where no dye is present, whereas the coherent structures...
Full Abstract
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Journal:
Journal of Engineering Mechanics
(1052)
Issu: 2015/DEC V.141 N.12
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