78th Annual Meeting of the APS Division of Fluid Dynamics (Nov 23 — 25, 2025)

P031: Turbulent Boundary Layer Separation over a Gaussian Bump

Authors
  • Nissrine Aziz, University of Illinois at Urbana-Champaign
  • Theresa Saxton-Fox , University of Illinois at Urbana-Champaign

Oil flow visualization is widely used to investigate the three-dimensional surface flow topology. By conducting this technique, we captured a swirling pattern known as 'Owl eyes' represented by two counter-rotating vortices. This structure provides evidence of flow separation on the downstream side of the Gaussian bump and highlights critical points. Focus points reflect outward swirling flow, and saddle points show where streaklines converge in one direction and diverge in the other.

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