PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Victor Nistor, Jinchao Xu, Xiantao Li, Yuxi Zheng, Kris Jenssen, Hope Shaffer.

Title:Uncertainty Quantification Algorithms, Analysis and Applications
Seminar:Computational and Applied Mathematics Colloquium
Speaker:Guang Lin, Pacific Northwest National Lab
Abstract:
Experience suggests that uncertainties often play an important role in quantifying the performance of complex systems. Therefore, uncertainty needs to be treated as a core element in modeling, simulation and optimization of complex systems. In this talk, a new formulation for quantifying uncertainty in the context of subsurface flow and transport problem will be discussed. An integrated simulation framework will be presented that quantifies both numerical and modeling errors in an effort to establish "error bars" in CFD. In particular, stochastic formulations based on Galerkin and collocation versions of the generalized Polynomial Chaos (gPC), adaptive ANOVA decomposition, random domain decomposition, and some stochastic sensitivity analysis techniques will be discussed in some detail. Several specific examples on flow and transport in randomly heterogeneous porous media piston problem will be presented to illustrate the main idea of our approach.

Room Reservation Information

Room Number:MB106
Date:11 / 04 / 2011
Time:03:35pm - 04:25pm