Computations of three-dimensional unsteady supersonic cavity flow to study the effect of different downstream geometries

Computations of three-dimensional unsteady supersonic cavity flow to study the effect of different downstream geometries

Soemarwoto, B.I.
Kok, J.C.

National Aerospace Laboratory NLR

2001-11-30

Computations of three-dimensional unsteady supersonic cavity flow are performed for a freestream Mach number of 1.2. Two cavity geometries are considered: (i) a simple rectangular cavity of length-to-depth (L/D) and length-to-width (L/W) ratios of 4.5, and (ii) a cavity with a 45° ramp attached to the downstream wall of the simple rectangular cavity. Two flow models for computing the cavity flowfield are assessed: (a) the Reynolds-Averaged Navier-Stokes (RANS) equations with a k-co turbulence model for the whole flow-field, and (b) a combination of an inviscid flow model using the Euler equations for the domain outside the boundary layer and the RANS model for the boundary layer. The structures of the flowfields resulting from the different models are observed. The effect of the different downstream geometries is assessed.

http://resolver.tudelft.nl/uuid:facccfaf-8463-44b2-a1b8-7937e631001c

Nationaal Lucht- en Ruimtevaartlaboratorium

Campus only

NLR Technical Publication TP 2001-446

Aerospace Engineering Reports

report

(c)2001 National Aerospace Laboratory NLR