On coherent structures in a round turbulent jet educed by wavelet transforms

Kailas, SV and Kalavathi, K and Bhat, GS (1995) On coherent structures in a round turbulent jet educed by wavelet transforms. In: 6th Asian Congress of Fluid Mechanics, 22-26 May 1995, Singapore.

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We attempt to detect and describe structures from instantaneous pictures of diametral slices of an axisymmetric neutral jet. This is achieved by using the 2D wavelet transform which detects the presence of structures over a range of physical scales. The detection utilizes the property of the transform as a correlator, in the light of Robinson's (1989) definition of a coherent structure as a region of the flow over which at least one flow variable exhibits significant correlation with itself or with another variable over a range of space that is larger than the smallest local scales of the flow.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Turbulant jets;Wavelet analysis;Flow visualisation;Flow geometry
Subjects: ENGINEERING > Fluid Mechanics and Thermodynamics
Division/Department: Other, Materials Science Division, Materials Science Division
Depositing User: M/S ICAST NAL
Date Deposited: 26 Sep 2006
Last Modified: 13 Aug 2015 15:00
URI: http://nal-ir.nal.res.in/id/eprint/2795

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