HIGH RESOLUTION EXPERIMENTAL MEASUREMENTS OF RICHTMYER-MESHKOV TURBULENCE IN FLUID LAYERS AFTER RESHOCK USING SIMULTANEOUS PIV-PLIF

True ensemble-averaged density self-correlation and Reynolds stress turbulence statistics in a Richtmyer-Meshkov unstable fluid layer after reshock are measured for the first time using simultaneous Particle-Image Velocimetry (PlV)-Planar Laser-Induced Fluorescence (PLIF) diagnostic. These high-qual...

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Bibliographic Details
Main Authors: Balakumar, B J, Prestridge, K P, Orlicz, G, Balasubramanian, S, Tomkins, C
Format: Conference Proceeding
Language:English
Subjects:
ASYMMETRY
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CONVERGENCE
DIMENSIONLESS NUMBERS
EMISSION
ERRORS
FLUORESCENCE
LASERS
LAYERS
LUMINESCENCE
MEASURING INSTRUMENTS
PHOTON EMISSION
REYNOLDS NUMBER
SHOCK WAVES
TURBULENCE
VELOCIMETERS
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Summary:True ensemble-averaged density self-correlation and Reynolds stress turbulence statistics in a Richtmyer-Meshkov unstable fluid layer after reshock are measured for the first time using simultaneous Particle-Image Velocimetry (PlV)-Planar Laser-Induced Fluorescence (PLIF) diagnostic. These high-quality experiments with advanced diagnostics provide important insights into the physics of RM turbulence that cannot be obtained using simple shadowgraphy or Schlieren diagnostics. The double peaked nature of the density self-correlation and the asymmetric character of the Reynolds stress distributions are discussed. Error estimates and convergence rates for several turbulence quantities are also provided.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3295225