Workshop / Seminar:Identifying coherent structures and controlling turbulent flows through deep learning
2025-02-14 09:30 - 10:30 (America/Detroit) | Lurie Robert H. Engin. Ctr - 2210
Time and location: February 14, 2025, 9:30 - 10:30 am, 2210 Lurie Engineering Center
To join via Zoom: https://umich.zoom.us/j/97823527756?pwd=[REDACTED]

Abstract: In this work we first use explainable deep learning based on Shapley explanations to identify the most important regions for predicting the future states of a turbulent channel flow. The explainability framework (based on gradient SHAP) is applied to each grid point in the domain, and through percolation analysis we identify coherent flow regions of high importance. These regions have around 70% overlap with the intense Reynolds-stress (Q) events in two-dimensional vertical planes. Interestingly, these importance-based structures have high overlap with classical turbulence structures (Q events, streaks and vortex clusters) in different wall-normal locations, suggesting that this new framework provides a more comprehensive way to study turbulence. We also discuss the application of deep reinforcement learning (DRL) to discover active-flow-control strategies for turbulent flows, including turbulent channels, three-dimensional cylinders and turbulent separation bubbles. In all the cases, the discovered DRL-based strategies significantly outperform classical flow-control approaches. We conclude that DRL has tremendous potential for drag reduction in a wide range of complex turbulent-flow configurations.

Bio: Dr. Ricardo Vinuesa is joining the Department of Aerospace Engineering at the University of Michigan in the Fall of 2025. He is currently an Associate Professor at the Department of Engineering Mechanics, KTH Royal Institute of Technology in Stockholm. He studied Mechanical Engineering at the Polytechnic University of Valencia (Spain), and he received his PhD in Mechanical and Aerospace Engineering from the Illinois Institute of Technology in Chicago. His research combines numerical simulations and data-driven methods to understand, control and predict complex wall-bounded turbulent flows, such as the boundary layers developing around wings and urban environments. Dr. Vinuesa has received, among others, an ERC Consolidator Grant, the TSFP Kasagi Award, the MST Emerging Leaders Award, the Goran Gustafsson Award for Young Researchers, the IIT Outstanding Young Alumnus Award, the SARES Young Researcher Award and he leads several large Horizon Europe projects. He is also a member of the Young Academy of Science of Spain.

Well-being:"Let's Talk": Informal, Drop-In Mental Health Counseling
2025-02-14 10:00 - 12:00 | Bursley Hall - 2329B
Trained mental health counselors are now available for drop-in conversations at different times and locations across campus, including at Trotter, the Spectrum Center, South Quad, the International Center, and Bursley.

This informal, confidential “office hours” style can be a great fit for students unsure about formal counseling; for those with a specific, time-limited concern they’d like to talk through; or those seeking information on campus resources. Please note: this is not meant for crisis or emergency support.

"Let's Talk" will run from January 20th 2025 to April 25th 2025. There will be no drop-ins the week of Spring Break (March 3rd - 7th).

Monday: 11:00 am - 1:00 pm with Markie Silverman, Ph.D., LP, Room 2035 in Trotter Multicultural Center
Tuesday: 1:00 pm - 3:00 pm with Marcella A. Beaumont, Ph.D., Room 3032 in The Spectrum Center (Michigan Union)
Wednesday: 1:00 pm - 3:00 pm with Emily Malinowski, LMSW, Room 1721A in South Quad Housing
Thursday: 2:00 pm - 4:00 pm with Ling Liu, Ph.D. & Chunyu Xu, M.Ed., M.S.Ed., Conference Room in the International Center
Friday: 10:00 am - 12:00 pm with Kayla Douglas, LMSW, and Emily Powers, LLMSW, Room 2329B in Bursley Housing

Exhibition:A Gathering
2025-02-14 10:00 - 20:00 | Museum of Art - Lizzie and Jonathan Tisch Apse
Welcome. Make Yourself At Home.

A Gathering brings together the newest works of art to enter UMMA’s collection — many on display here for the first time.

As a free, public museum, UMMA staff takes care of art for the benefit of the community and society at large. The works on view in this exhibition, all brought into the Museum between 2019 and the present, shows how institutions like UMMA are becoming more permeable to societal challenges, and more nimble in responding to them in service to all in their communities. In this exhibition you will find works that reflect on how global migrations, race, gender, and ecological change shape the way we engage with the world and inform our visions for the future.

This collection of artistic engagements with issues give us tools to envision who we want to be as individuals, as a museum, and as a society, connected to one another across space and experience.

So gather here to take in these latest works of art brought here for you. Gather here to be engulfed in their forms and meanings, to discuss their takes, to learn, to disagree. Gather to relax, make a friend, drink a coffee, finish the daily Wordle. Gather to feel full, to be moved and inspired by all the possible imaginations of what is yet to come.

Curated by Félix Zamora Gómez Irving Stenn, Jr. Fellow in Public Humanities & Museum Pedagogy

Lead support for this exhibition is provided by Lizzie and Jonathan Tisch, the Richard and Rosann Noel Endowment, and the University of Michigan Office of the Provost.
