Efficient high-order time discretization methods for PDEs

May 8-10, 2019 - Villa Orlandi, Anacapri, Italy

Invited Lecture

New developments in multirate integration

Adrian Sandu,

Virginia Tech, Blacksburg, VA, USA

Abstract

Multirate methods seek to solve efficiently dynamical systems characterized by multiple time scales. The solution strategy is to use small step sizes to discretize the fast components, and large step sizes to discretize the slow components.
This talk will discuss the new family of multirate infinitesimal GARK schemes, where the fast component is advanced by solving an appropriate ODE, thereby allowing extreme flexibility in practical implementations. The talk will also discuss new multirate General Linear Methods.


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