Stability Analysis of Shock Wave/Boundary Layer Interactions - Jean ...

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Compressible Case: SWBLIBase FlowSWBLI - Global Instability X. MERLE SINUMEF - ENSAM Paris 2008-07-15 10/19The base flow hase been computed by a two-dimensional solver code:Spatial discretization: seven order AUSMPW+ scheme unlimitedthrough the shock.Time discretization: third order implicit methods (time dual stepping).The basic flow solutions are converged in time to within a toleranceof 10 −10 .y/X sh0.20.150.10.050.9470.8970.8500.7500.6500.5500.4500.3500.2500.1500.050-0.034-0.061-0.100-0.14500 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2UIso-lines of longitudinalvelocity U(x,y) andstreamlines. θ = 32 o ,Re= 10 5 .x/X sh
Compressible Case: SWBLINumerical ResolutionSWBLI - Global Instability X. MERLE SINUMEF - ENSAM Paris 2008-07-15 11/19Linear global stability equation are discretized by a multidomain(three domains) spectral collocation method (Gauss-Lobatto points)on staggered grid,two sets of Chebychev points for each direction x and y; the pressureis computed on Chebychev Gauss points and the remainder of thephysical sizes in a Chebychev Gauss-Lobatto grid. Data aretransferred between the grids using the interpolation arrays.
Page 1 and 2: SWBLI - Global Instability X. MERLE
Page 3 and 4: Why the shock wave / boundary layer
Page 5 and 6: Global Linear Stability TheoryTheor
Page 7 and 8: Incompressible case: Separated Boun
Page 9: Compressible Case: SWLBLIIntroducti
Page 13 and 14: Compressible Case: SWBLIDNS Compari
Page 15 and 16: Compressible Case: SWBLIResults: co
Page 17 and 18: Conclusion and ProspectsSWBLI - Glo
Page 19: Compressible Case: SWBLIDNS Compari

Stability Analysis of Shock Wave/Boundary Layer Interactions - Jean ...

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