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Simultaneous concentration and velocity field measurements in a shock-accelerated mixing layer

Journal Article · · Experiments in Fluids
 [1];  [2];  [2];  [3];  [4];  [2]
  1. Univ. of Wisconsin, Madison, WI (United States). Dept. of Engineering Physics; University of Wisconsin Madison
  2. Univ. of Wisconsin, Madison, WI (United States). Dept. of Engineering Physics
  3. Univ. of Wisconsin, Madison, WI (United States). Dept. of Mechanical Engineering
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
+ Show Author Affiliations
Here, a novel technique to obtain simultaneous velocity and concentration measurements is applied to the Richtmyer–Meshkov instability. After acceleration by a Mach 2.2 shock wave, the interface between the two gases develops into a turbulent mixing layer. A time-separated pair of acetone planar laser-induced fluorescence images are processed to yield concentration and, through application of the Advection-Corrected Correlation Image Velocimetry technique, velocity fields. This is the first application of this technique to shock-accelerated flows. We show that when applied to numerical simulations, this technique reproduces the velocity field to a similar quality as particle image velocimetry. When applied to the turbulent mixing layer of the experiments, information about the Reynolds number and anisotropy of the flow is obtained.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344; NA0001980
OSTI ID:
1489506
Alternate ID(s):
OSTI ID: 1762873
Report Number(s):
LLNL-JRNL--734238; PII: 1823
Journal Information:
Experiments in Fluids, Journal Name: Experiments in Fluids Journal Issue: 10 Vol. 55; ISSN 0723-4864
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (1)

Simultaneous direct measurements of concentration and velocity in the Richtmyer–Meshkov instability journal June 2018

Figures / Tables (10)

Fig. 1(p. 2)figure Fig. 1
Fig. 2(p. 3)figure Fig. 2
Fig. 3(p. 4)figure Fig. 3
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Fig. 7(p. 6)figure Fig. 7
Table 1(p. 6)table Table 1
Fig. 8(p. 7)figure Fig. 8
Fig. 9(p. 7)figure Fig. 9

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