Pseudospectral computations illustrating shock wave turbulence amplification in viscous flow

Conference · Sun Mar 01 04:00:00 EST 1987

OSTI ID:6507462

Buckingham, A C

Pre-existing turbulence may be significantly amplified by shock waves. Qualitative confirmation exists from shock tube and supersonic wind tunnel shock wave boundary layer interaction experiments. The former rarely provide accurate quantitative data, since probe survival and resolution sensitivity are jeopardized by shock pressure, temperature, and brevity of measurement duration. The latter, shock boundary layer interaction experiments, are extremely difficult to interpret since the process is obscured by the complex flow structure, the general turbulence questions, and the ill-defined interaction. Detailed numerical simulations are sought to provide verification and isolate dominant mechanisms. In the present work, pseudospectral Navier-Stokes simulations are developed which either capture the shock or track and fit it as a moving computational boundary.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6507462
• Report Number(s): UCRL-95512; CONF-870712-2; ON: DE87008493
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
BOUNDARY LAYERS
COMPUTERIZED SIMULATION
FLUID FLOW
LAYERS
MATHEMATICAL MODELS
SHOCK WAVES
SIMULATION
TURBULENCE
VISCOUS FLOW