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Title:An Experimental Investigation Into the Effect of Plasma on the Flow Features of an Axisymmetric Jet
Author(s):Huffman, Richard E.
Doctoral Committee Chair(s):Gregory Elliott
Department / Program:Aerospace Engineering
Discipline:Aerospace Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Physics, Fluid and Plasma
Abstract:The plasma did influence the mean and turbulent velocity profiles of the jets tested - allowing the jet core to penetrate further downstream. Large scale structure tracking indicated an increase in convective velocity of up to 5%. Heating of the shear layer by the plasma field was believed to bias the convective velocity towards the jet core by increasing the speed of sound in the shear layer. Rotational temperatures taken by model matching of spectroscopy data indicated shear layer heating which supports an equivalent increase in convective velocity as was measured in large scale structure tracking. In perfectly expanded jets, turbulent kinetic energy decreased along the jet centerline by 7% to 14% and were not influenced by compressibility which is consistent with increased jet penetration. However, in pipe-flow jets the centerline turbulent kinetic energy decreased at low equivalent Mach numbers, reversing to slight increases for equivalent Mach numbers over 1.4.
Issue Date:2007
Description:352 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007.
Other Identifier(s):(MiAaPQ)AAI3301152
Date Available in IDEALS:2015-09-25
Date Deposited:2007

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