The local velocity characteristics of separating boundary-layer flows and the resulting downstream regions of recirculation are obtained by solving, with finite- difference methods, parabolic and elliptic equations that represent conservation of mass and momentum. Both methods are shown to represent, in general terms, the measurements of Simpson et al. obtained in a separating boundary layer. Quantitative discrepancies exist and may be attributed partly to the turbulence models and wall functions. In addition, the boundary-layer assumptions of the parabolic equations may contribute to the discrepancies, and the comparatively small number of nodes abailable for the solution of the elliptic equations undoubtedly contribute. The elliptic procedure has been used to calculate the separated flow in wide-angle diffusers and on wedges, again with flow separation, intended to simulate the trailing edge of airfoils at angle of attack. (Jensen)
Calculation of separated boundary-layer flows
Berechnung der Grenzschichtabloesung bei Grenzschichtstroemungen
AIAA Journal ; 17 , 12 ; 1291-1292
1979
2 Seiten, 2 Bilder, 3 Quellen
Article (Journal)
English
Calculation of Separated Boundary-Layer Flows
AIAA | 1979
|Turbulence modeling of shock separated boundary-layer flows
Tema Archive | 1977
|