Seminar Series

Turbulent flows made up of solid particles or liquid droplets can be found across a broad range of engineering and scientific disciplines. The nonlinear and multiscale nature of such flows often precludes a direct analytic solution, and instead we must turn to numerical simulations that leverage high-performance computing resources or coarse-grained simulations that rely on subgrid-scale models.

High-speed shear flows are often characterized by some kind of aeroacoustic resonance phenomenon. Supersonic jets, particularly those that contain shock structures, produce high-intensity and discrete-frequency acoustic tones associated with an aeroacoustic feedback loop. While these jets and their associated resonances have been the subject of study for seventy years, our understanding of what physical mechanisms underpin the resonance has changed drastically in the past decade.

Midwest Mechanics Seminar Series Data-Driven Nonlinear Reduced-Order Modeling for Solid and Fluid Mechanics George Haller Chair in Nonlinear Dynamics ETH Zurich Monday, March 27, 2023 Johnson Room, LEC 4:00 p.m. Midwest Mechanics Zoom Link Passcode 465648 Add to calendar Abstract Machine learning has been a major development in applied science and engineering, with impressive success […]

Architected materials are lightweight with high specific strength and excellent energy absorption, holding great promise for a range of applications, including automobiles, aerospace, and space. However, the absolute strength of such materials is low due to the removal of base material. To enhance the strength, stretch-dominated architectures are used, but they suffer post-yield collapses, severely limiting their energy absorption and post-yield stability, which are critical for structural applications.