NDLI: Oscillatory thermal structures in a reattaching jet flow

Content Provider	Springer Nature Link
Author	Narayanan, V.
Copyright Year	2007
Abstract	Spatially varying surface temperature oscillations in a nominally steady reattaching slot jet at a Reynolds number (Re) of 5000 are analyzed using Proper Orthogonal Decomposition (POD) for two nozzle-to-surface spacings, and three exit openings of the nozzle. The surface temperature data in these experiments were recorded using infrared thermography at a frequency of 20 Hz along two selected lines on the impingement surface corresponding to geometrically similar and dissimilar regions within the reattachment curtain. The magnitude of temperature oscillations were found to increase with an increase in exit opening for the larger nozzle spacing. The POD analysis results indicate that a majority of the temperature flucutations are well captured by 15 dominant modes. In many cases, the three dominant modes accounted for approximately 60 percent of the variance in surface temperature fluctuation.
Starting Page	389
Ending Page	396
Page Count	8
File Format	PDF
ISSN	13438875
Journal	Journal of Visualization
Volume Number	10
Issue Number	4
e-ISSN	18758975
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Infrared (IR) Thermography thermal structures reattachment jet temperature fluctuations Proper Orthogonal Decomposition (POD) Engineering Fluid Dynamics Computer Imaging, Vision, Pattern Recognition and Graphics Classical Continuum Physics Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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