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APPM Department Colloquium - Jed Brown
Start Date: 4/28/2017Start Time: 3:00 PM
End Date: 4/28/2017End Time: 4:00 PM
This event recurs on Friday every week until 4/28/2017.   Click here to see the series dates.
Event Description:
Jed Brown, Department of Computer Science, University of Colorado Boulder
On nonlinear adaptivity with heterogeneity
Conventional adaptive methods depend on the solution being smooth in
much of the domain, such that coarse grids provide adequate resolution
everywhere but in some localized areas that require higher resolution.
Heterogeneity impedes standard adaptive techniques because it is not
possible to have accurate solutions without resolving the heterogeneity.
We present an adaptive method that can be viewed as a nonlinear
multigrid or domain decomposition scheme in which fine levels resolve
the heterogeneity but are rarely visited in most of the domain during
the nonlinear solution process.  This requires judicious use of overlap
similar to the highly parallel segmental refinement methods of Adams et
al (2016) and related to admissibility criteria for fast integral
methods.  We will compare and contrast our method with other nonlinear
multilevel domain decomposition methods such as ASPIN.
Location Information:
Main Campus - Engineering Classroom Wing  (View Map)
1111 Engineering DR
Boulder, CO
Room: 265
Contact Information:
Name: Ian Cunningham
Phone: 303-492-4668

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