Multi-fidelity methods for uncertainty quantification in transport problems
Abstract
We compare several multi-fidelity approaches for uncertainty quantification in flow and transport simulations that have a lower computational cost than the standard Monte Carlo method. The cost reduction is achieved by combining a small number of high-resolution (high-fidelity) simulations with a large number of low-resolution (low-fidelity) simulations. We propose a new method, a re-scaled Multi Level Monte Carlo (rMLMC) method. The rMLMC is based on the idea that the statistics of quantities of interest depends on scale/resolution. We compare rMLMC with existing multi-fidelity methods such as Multi Level Monte Carlo (MLMC) and reduced basis methods and discuss advantages of each approach.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFM.H41F1390T
- Keywords:
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- 1829 Groundwater hydrology;
- HYDROLOGYDE: 1832 Groundwater transport;
- HYDROLOGYDE: 1839 Hydrologic scaling;
- HYDROLOGYDE: 1846 Model calibration;
- HYDROLOGY