April 18, 2013: Fluid Mechanics Challenges in Energy, Environment and Health: Insights gained via Numerical Simulation
Date: Thu, 18 April 2013
Time: 05.15 p.m.
Location: ML J 34.3
Director, St. Anthony Falls Laboratory
James L. Record Professor, Dept. of Civil Engineering
College of Science and Engineering
Univerity of Minnesota
Simulation-based engineering science has emerged as a powerful approach for tackling the major societal problems of our time in human health, environmental sustainability, and renewable energy. In this talk I will review recent advances in computational algorithms for simulating challenging fluid mechanics problems in all these areas. Our numerical approach is based on the curvilinear immersed boundary method and features accurate and robust fluid-structure interaction algorithms for rigid bodies and soft tissues, can handle two-phase flows and free surface effects, and is capable of carrying out coherent-structure-resolving simulations of turbulent flows in arbitrarily complex domains with dynamically evolving boundaries. The ability of the method to yield striking insights into the physics of a broad range of societally relevant fluid mechanics problems will be demonstrated by discussing: 1) vortex formation and fluid-structure interaction in cardiovascular flows; 2) turbulent flows over mobile sediment beds in natural waterways; and 3) the dynamics of axial flow hydrokinetic turbine wakes in a turbulent open channel flow. Future grand challenges and opportunities for simulation-based fluid mechanics research will also be discussed.
Host: Prof. Petros Koumoutsakos