Tim Colonius
Frank and Ora Lee Marble Professor of Mechanical Engineering and Medical Engineering; Cecil and Sally Drinkward Leadership Chair, Department of Mechanical and Civil Engineering; Executive Officer for Mechanical and Civil Engineering
Research interests: Fluid dynamics: global instabilities, cavitation and bubble dynamics, aerodynamic sound. Control: closed-loop flow control and reduced-order modeling. Biomedical fluid dynamics: shock-waves, lithotripsy and ultrasound. Numerical methods: interface capturing, immersed-boundary methods, high-order-accurate methods, and nonreflecting boundary conditions.
Overview
Acoustic waves, especially high-intensity ultrasound and shock waves, are used for medical imaging and, increasingly, in manipulation of cells, tissue, and urinary calculi. They are used to treat kidney stone disease, plantar fasciitis, and bone nonunion, and are being investigated as a technique to ablate cancer tumors and mediate drug delivery. In many applications, acoustic waves interact with bubbles whose presence can either mediate the desired mechanical stresses and strains, or lead to collateral damage. Professor Colonius' interdisciplinary research group, uses theory and large-scale numerical simulations to study the dynamics and interaction of ultrasound and shock waves with inhomogeneous materials and bubbles, and to predict and optimize the local stresses and strains generated by insonification. They work with other engineers, scientists, and medical professionals to translate the fundamental mechanics into improvements in the design and clinical application of shockwave lithotripters.
Related News
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- Hou, Wei;Colonius, Timothy E. (2024) An adaptive lattice Green's function method for external flows with two unbounded and one homogeneous directionsJournal of Computational Physics
- Arun, Rahul;Colonius, Tim (2024) Velocity gradient partitioning in turbulent flowsJournal of Fluid Mechanics
- Lee, Chungil;Ozawa, Yuta et al. (2024) Superresolution and analysis of three-dimensional velocity fields of underexpanded jets in different screech modesPhysical Review Fluids
- Radhakrishnan, Anand;Le Berre, Henry et al. (2024) Method for scalable and performant GPU-accelerated simulation of multiphase compressible flowComputer Physics Communications
- Chreim, Jose Rodolfo;Rodriguez, Mauro, Jr. et al. (2024) A phase change model for the simulation of cavitating droplet aerobreakup using interface-capturing schemes
- Nekkanti, Akhil;Pickering, Ethan et al. (2024) Nonlinear Interactions in Non-Resonant, Homogeneous Turbulent Jets
- Eichberger, Ethan R.;Heidt, Liam et al. (2024) Localized Resolvent-Mode Bases for Turbulence Statistics
- Hasparyk, Barbara;Jordan, Peter et al. (2024) Resolvent Modeling of Subsonic Jet Noise
- Tissot, Gilles;Cavalieri, André et al. (2024) Coherence Decay in Turbulent Jets by Stochastic Modelling Under Location Uncertanty
- Maia, Igor A.;Heidt, Liam et al. (2024) The effect of flight on a turbulent jet: coherent structure eduction and resolvent analysisJournal of Fluid Mechanics