Browsing by Subject "preconditioner"
Now showing items 1-3 of 3
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(2022-04-11)We develop, analyze, and test iterative methods for three kinds of multigroup transport problems: (1) k-eigenvalue neutronics, (2) thermal radiation transport, and (3) problems with “upscattering,” in which particles can ...
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(2016-12-07)The linear solver in a typical reservoir simulator consumes around 60 to 70 % of the total simulation time. To speed up the solution of the linear systems we will use a two stage preconditioner, where the first stage is ...
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(2012-10-19)In this dissertation, we focus on the uncertainty quantification problems where the goal is to sample the porous media properties given integrated responses. We first introduce a reduced order model using the level set ...