Author(s): C. Randall Truman, M. Anderson, P. Vorobieff, P. Wayne,
C. Corbin, T. Bernard & G. Kuehner
We present an experimental and numerical study of a complex flow that develops
upon impulsive (shock) acceleration of a compressible multiphase medium.
the initial conditions, both diffuse density interfaces (gas-gas) and sharp density
interfaces (gas-fluid) are present, with the fluid phase embedded within the gas in
the form of small droplets.
Our initial experiments failed to reveal some features
prominent in the numerical simulations.
For such occurrences, it is common
practice to look for problems with the computational model or its implementation.
In the case we present, however, the fault lay with a visualization technique that
relied exclusively on visible-light Mie scattering from the droplets.
visualization technique (laser-induced fluorescence) reveals that droplets do not
follow some of the flow features forming after acceleration.
and numerics we present cover Mach numbers ranging from 1.2 to 2.1, with
characteristic Atwood number (dimensionless density ratio) of 0.5....
Size: 2,063 kb
Paper DOI: 10.2495/MPF130111
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