Dr. Roger Ayats

Assistant Professor of Fluid Mechanics

Polytechnic University of Catalonia – BarcelonaTech

DF-GeoTech (Fluid Dynamics and Geophysical and Technological Applications)

I am a researcher in Fluid Dynamics, primarily interested in the transition from laminar to turbulent flow in wall-bounded shear flows. My recent work focuses on intermittency phenomena, characterized by the spatio-temporal coexistence of laminar and turbulent regions. I am also deeply interested in the computation and analysis of Exact Coherent Structures (ECS), which serve as precursors or building blocks of chaotic attractors and turbulence.

In addition, I study extensional and viscoelastic flows, exploring their unique dynamical behaviors. More details about my research can be found on the Projects page.

I investigate these phenomena within the framework of dynamical systems and bifurcation theory, employing numerical simulations as a primary tool. My expertise includes optimization and spectral methods, hydrodynamic stability analysis, Newton solvers, homotopy continuation schemes, and Arnoldi-based stability analyses, among other computational techniques.