New experimental platform for accelerated turbulent mixing and

1
New experimental platform for accelerated
turbulent mixing and turbulence in rotating
fluids at high Reynolds numbers
Sergei S. Orlov Solid State and Photonics Lab,
Stanford Snezhana I. Abarzhi FLASH Center,
University of Chicago
FLUID DYNAMICS EXPERIMENTS
MOTIVATION

• Rayleigh-Taylor Instability in large, spatially
  non-uniform, time-varying gravity fields
• Accelerated mixing and turbulence in rotating
  fluids at high Reynolds numbers and at
  high rotation rate scaling and statistics
• Compressible fluids simultaneous, correlated
  high-resolution measurements of the velocity
  and density, using PIV and interferometry
• Convection, combustion, MHD
• Laboratory astrophysics stellar and
  magneto- convection, shock-induced turbulent
  mixing, supernovae, accretion disks

STANFORD HOLOGRAPHIC DISK SYSTEM

• Accelerated turbulent mixing and turbulence in
  rotating fluids governs a wide variety of
  astrophysical phenomena
• stellar convection and turbulent dynamo
• shock-induced turbulent mixing in supernovae
• accretion and proto-stellar disks
• swirling flows and jets
• formation of planets and stars

• Background
• 52M 6-year long
• DARPA HDSS program
• Final deliverable
• 1 Gb/s holographic disk
• storage system (Stanford)
• 10 Gb/s optical data rate
• (fastest optical storage
• device ever built)
• State-of-the-art
• technology optics,
• mechanics, electronics

• Capabilities
• Rotation rate 0-10,000 RPM
• Max g 12,000g
• Reynolds number gt107
• Timing accuracy lt10 ns
• Position accuracy lt 1.5 mm
• Chamber size Ø40 ? 30 cm
• Spatial resolution lt 10mm
• Frame rate 103 (upto 104) fps
• Frame size upto 2 Mpixels

• References
• S. S. Orlov, W. Phillips, E. Bjornson, P.
  Sundaram, Y. Takashima, L.
  Hesselink, R. Okas, D. Kwan, R. Snyder, Appl.
  Opt. 43, 4902 (2004)
• S. I. Abarzhi et. al., Phys. Fluids 17, 081705
  (2005)
• S. I. Abarzhi, Scaling and spectral properties of
  the accelerated turbulent mixing, in preparation

Acknowledgements The work was supported by
DARPA/NSIC HDSS and PRISM consortia, DOE/ASC
contract N B523820, and NRL