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Applied Mathematics and Computation Seminars

Methane bubbles frozen in the ice of Lake Baikal

The AMC seminar is devoted to general topics in applied mathematics and computation. We welcome an interdisciplinary audience and speakers: faculty, researchers, and graduate students from mathematics, geosciences, computer science, engineering, atmospheric sciences, and other disciplines, to attend and present research talks in their fields as well as reaching across multiple fields. Both technical, tutorial, and expository presentations are welcome.

Attendees are encouraged to join the mailing list by sending an email to the organizer (M. Peszynska).

Students attending regularly are encouraged to sign up for (an appropriate section of) seminar credit under MTH 607. Non-OSU participants from outside academe are also encouraged to write an email to the organizers and provide their names and affiliation.

See below for upcoming seminars or access the seminar archive.


Organizers

Malgorzata Peszynska and Ralph E. Showalter.

Timing

Meetings are Fridays at noon.


Heterogeneous domain decomposition approach for coupled soil-snow model

STAG 110

Speaker: Praveeni Mathangadeera

ABSTRACT: We present a heterogeneous domain decomposition approach for solving nonlinear heat conduction for a snow-soil model in Arctic environments. The snow and soil domains are treated as distinct physical domains, each described by a separate nonlinear heat equation with distinct nonlinear laws for material properties. These two models are coupled across their interface by ensuring the continuity of temperature and the conservation of heat flux. The coupled system is solved iteratively with a Dirichlet to Neumann approach, where the snow and soil models are solved independently, updating the interface conditions within a Richardson scheme until convergence is achieved. We show the basics of analysis, compare with Schur complement calculations, and with the monolithic approach. Read more.


TBA

STAG 110

Speaker: Daniel Fust

Read more.


TBA

STAG 110

Speaker: Stefanie Fazekas and Eddie Ramos-Arteaga

Read more.