Spectral analysis of the turbulent mixing of two fluids

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We describe a spectral approach to the investigation of fluid instability, generalized turbulence, and the interpenetration of fluids across an interface. The Technique also applies to a single fluid with large variations in density. Departures of fluctuating velocity components from the local mean are far subsonic, but the mean Mach number can be large. Validity of the description is demonstrated by comparisons with experiments on turbulent mixing due to the late stages of Rayleigh-Taylor instability, when the dynamics become approximately self-similar in response to a constant body force. Generic forms for anisotropic spectral structure are described and used as a ... continued below

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245 p.

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Steinkamp, M. J. September 1995.

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Description

We describe a spectral approach to the investigation of fluid instability, generalized turbulence, and the interpenetration of fluids across an interface. The Technique also applies to a single fluid with large variations in density. Departures of fluctuating velocity components from the local mean are far subsonic, but the mean Mach number can be large. Validity of the description is demonstrated by comparisons with experiments on turbulent mixing due to the late stages of Rayleigh-Taylor instability, when the dynamics become approximately self-similar in response to a constant body force. Generic forms for anisotropic spectral structure are described and used as a basis for deriving spectrally integrated moment equations that can be incorporated into computer codes for scientific and engineering analyses.

Physical Description

245 p.

Notes

OSTI as DE95017559

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  • Other Information: DN: Thesis submitted to University of Illinois, Urbana-Champaign, 1995.; TH: Thesis (Ph.D.)

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  • Other: DE95017559
  • Report No.: LA-UR--95-2927
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/105890 | External Link
  • Office of Scientific & Technical Information Report Number: 105890
  • Archival Resource Key: ark:/67531/metadc621906

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Office of Scientific & Technical Information Technical Reports

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  • September 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Feb. 29, 2016, 7:37 p.m.

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Steinkamp, M. J. Spectral analysis of the turbulent mixing of two fluids, thesis or dissertation, September 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc621906/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.