Inferences drawn from shock-enhanced turbulent mixing analyses

Conference · Fri Oct 16 04:00:00 EDT 1987

OSTI ID:5803931

Buckingham, A C

This discussion concerns analyses of physical shock-tube and shock-boundary layer interaction experiments, supplemented by computations. The basic issue is that of evaluating the influence of reflected shock waves on enhancing the balance of turbulent kinetic energy and resultant turbulent materials mixing during implosion and shock reflection intervals. Increases in random velocity amplitudes of a factor of 5 or greater implying turbulent kinetic energy increases of a factor of 12 or more have been observed in some low Mach Number shock-tube and boundary-layer shock wave interaction experiments. These results are analyzed to estimate their influence on increased turbulent material mixing subsequent to shock interaction. The analyses are developed with the assistance of two-dimensional, pseudospectral free turbulent field shock interaction numerical simulations as well as compressible turbulent boundary-layer shock interaction calculations. Of particular interest is the influence of Mach Number and pre-existing turbulent intensity on the enhancement ratios. 24 refs., 8 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5803931
• Report Number(s): UCRL-97532; CONF-8710192-1; ON: DE88001634
• Country of Publication: United States
• Language: English

Related Subjects

640410* -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOUNDARY LAYERS
DIFFERENTIAL EQUATIONS
EQUATIONS
FLOW MODELS
LAYERS
MACH NUMBER
MATHEMATICAL MODELS
MIXING
NAVIER-STOKES EQUATIONS
PARTIAL DIFFERENTIAL EQUATIONS
SHOCK WAVES
TURBULENCE
TWO-DIMENSIONAL CALCULATIONS
VELOCITY