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Title: Spectral analysis of the turbulent mixing of two fluids

Abstract

The authors 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.

Authors:
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
212563
Report Number(s):
LA-13123-T
ON: DE96008881; TRN: AHC29608%%108
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Technical Report
Resource Relation:
Other Information: DN: Thesis submitted to Univ. of Illinois, Urbana, IL (US); TH: Thesis (Ph.D.); PBD: Feb 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; FLUIDS; MIXING; TURBULENT FLOW; FLOW MODELS; FLUID MECHANICS; TURBULENCE; NUMERICAL SOLUTION; THEORETICAL DATA; NAVIER-STOKES EQUATIONS; MASS TRANSFER; RESEARCH PROGRAMS

Citation Formats

Steinkamp, M J. Spectral analysis of the turbulent mixing of two fluids. United States: N. p., 1996. Web. doi:10.2172/212563.
Steinkamp, M J. Spectral analysis of the turbulent mixing of two fluids. United States. https://doi.org/10.2172/212563
Steinkamp, M J. 1996. "Spectral analysis of the turbulent mixing of two fluids". United States. https://doi.org/10.2172/212563. https://www.osti.gov/servlets/purl/212563.
@article{osti_212563,
title = {Spectral analysis of the turbulent mixing of two fluids},
author = {Steinkamp, M J},
abstractNote = {The authors 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.},
doi = {10.2172/212563},
url = {https://www.osti.gov/biblio/212563}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 1996},
month = {Thu Feb 01 00:00:00 EST 1996}
}