Upcoming Events
Hybrid Applied Mathematics Seminar
Conference/Seminar
Talk Title: Solving Heat Transfer and Fluid Flow Problems with Reduced Order Models and Neural Networks
Speaker: Dr. Zilong Song Department of Math & Stat, USU
Abstract: The friction stir welding process can be modelled using a system of heat transfer and Navier-Stokes equations with a shear dependent viscosity. Finding numerical solutions of this system of nonlinear partial differential equations over a set of parameter space, however, is extremely time-consuming. Therefore, it is desirable to find a computationally efficient method that can be used to obtain an approximation of the solution with acceptable accuracy. In this talk, we present a reduced basis method for solving the parametrized coupled system of heat and Navier-Stokes equations using a proper orthogonal decomposition (POD). In addition, we apply a machine learning algorithm based on an artificial neural network (ANN) to learn (approximately) the relationship between relevant parameters and the POD coefficients. Our computational experiments demonstrate that substantial speed-up can be achieved while maintaining reasonable accuracy.
Biology Speaker Seminar Series: Dr. Anne Murphy
Conference/Seminar
Dr. Anne Murphy from Georgia State University will be presenting "Impact of Age and Sex on Opioid Modulation of Pain" in-person as well as on Zoom. Join the seminar in-person in LSB 207 or on Zoom: https://usu-edu.zoom.us/j/83955459503?pwd=bXhoNCtLb1UzTy9zcEV1V3ByUzZodz09
Kevin Moon's Science Unwrapped Talk
Conference/Seminar | Science Unwrapped
Seeing Science: Using machine learning to visualize data.
Biology Speaker Seminar Series: Dr. Matt Holding
Conference/Seminar
Dr. Matt Holding from Michigan State University will be presenting "Evolution of Complexity in Two Molecular Weapons Systems: Viper Venoms and Rodent Phytochemical Detox Genes" in-person as well as on Zoom. Attend the seminar in-person in LSB 207 or on Zoom: https://usu-edu.zoom.us/j/83955459503?pwd=bXhoNCtLb1UzTy9zcEV1V3ByUzZodz09
Geosciences Speaker Series: Joann Stock
Conference/Seminar
Joann Stock from California Institute of Technology is a speaker from the IODP lecture series. She will present on "Filling the Void: Processes of Creation of New Crustal Area During Early Seafloor Spreading".
Applied Mathematics Seminar
Conference/Seminar
In-Person: ANSC 119
ZOOM ID: 860 6092 4997 PWD: USUAMS
Title: Sensitivity analysis and uncertainty quantification using novel physics-constrained machine learning
Speaker: Dr. Hamidreza Karbasian, Fields Institute, University of Toronto
Abstract:
A new physics-constrained data-driven approach is proposed for sensitivity analysis and uncertainty quantification of large-scale chaotic dynamical systems. Unlike conventional sensitivity analysis, this approach can solve the unsteady sensitivity function for PDE-constrained optimizations. In this new approach, high-dimensional governing equations, such as Navier-Stokes equations, from physical space are transformed into an unphysical space to develop a closure model in the form of a Reduced-Order Model (ROM). Subsequently, a new data sampling approach is proposed to build a data-driven approach for this framework. It is shown that the proposed approach can capture sensitivities for large-scale chaotic dynamical systems, where Finite Difference (FD) approximations fail ...
Biology Speaker Seminar Series: Dr. Robert Schaeffer
Conference/Seminar
Dr. Robert Schaeffer from Utah State University will be presenting a discussion of his research in-person as well as on Zoom. Attend the seminar in-person in LSB 207 or on Zoom: https://usu-edu.zoom.us/j/83955459503?pwd=bXhoNCtLb1UzTy9zcEV1V3ByUzZodz09
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