A NEW SCALING FOR ADVERSE PRESSURE GRADIENT TUBULENT BOUNDARY LAYERS etc15 Tracking Number 385Presentation: Session: Wall-bounded flows 3 Room: Room I Session start: 10:30 Wed 26 Aug 2015 Flint Thomas fthomas@nd.edu Affifliation: Institute for Flow Physics and Control, University of Notre Dame David Schatzman david.m.schatzman.ctr@mail.mil Affifliation: Science and Technology Corp., Moffett Field, CA Topics: - Wall bounded flows Abstract: A new scaling for strong adverse pressure gradient (APG) turbulent boundary layers (TBL) is presented. The new scaling is applied to both the author’s unsteady and steady APG TBL experiments as well as several previously published studies. The scaling is shown to provide a remarkable collapse of the mean velocity profiles in each case. The new scaling is motivated by the recognition that the physics of the strong APG TBL is dominated by the inflectional instability of an embedded shear layer within the boundary layer. The implications of the scaling on the physics of APG TBL flows in general is also discussed. |