The McKeon research group researches fundamental and applied problems related to fluid flow, especially close to surfaces. The focus is on challenges related to aerospace, hydrodynamics, the fluid dynamics of bioinspired design, and engineering in general, using novel experiments and analysis techniques.
We have current research activity related to characterizing the fundamental structure of turbulent boundary layers; to efficient and high-fidelity low-order models of wall turbulence, especially by extending the resolvent analysis for turbulent flows which we have been developing for several years; and to flow modeling exploiting both computational and experimental data through data assimilation frameworks.
Current Research Highlights
Extensions of the resolvent framework for a wider variety of applications in wall-bounded turbulence
Taming turbulence: we develop systematic approaches to design flow control schemes to reduce drag on the next generation of ships, airplanes and other engineering systems.
Influence of Mechanical System Design on the Response of an Airfoil to Predicted, Coherent Fluid Forcing
How should we design an engineering system to leverage a predicted incoming flow field for improved drag reduction?
Combining cyber-physical fluid dynamics and Koopman analysis in order to study forced fluid-structure systems.
It seems doubtful whether we can expect to understand fully the instability of a fluid flow without obtaining a mathematical representation of the motion of the fluid in some particular case in which instability can actually be observed. – G. I. Taylor (1923)
By modeling a turbulent boundary layer as a low-order linear system with random background forcing, we are able to qualitatively predict the effect of a rough wall on the individual scales of the turbulence.