Topic: 29th NIA CFD Seminar:Design of Optimal Explicit Runge-Kutta Schemes for the High-Order Spectral Difference Method

Date: Tuesday, April 2, 2013

Time:11:00am-noon (EST),

Location: NIA room 137

Speaker: Matteo Parsani

Biography: Dr. Matteo Parsani is currently a Post-doctoral Fellow at NASA Langley Research Center, working with Professor Mark H. Carpenter. Prior to this he was a Post-doctoral Researcher at KAUST, working in the group of Professor David Ketcheson. He received his Ph.D. in Mechanical and Aerospace Engineering from Free University of Brussels in December 2010. His research interests include high-order accurate methods for large-eddy simulation and aeroacoustics, efficient explicit and implicit time integrators and acceleration techniques for compressible flows. In 2011 his PhD thesis was selected among the best National Ph.D. theses to be presented at the ECCOMAS Olympiad workshop in Athens.

Abstract: Explicit Runge--Kutta schemes with large stable step sizes are developed for integration of high order spectral difference spatial discretizations on quadrilateral grids. The new schemes permit an effective time step that is substantially larger than the maximum admissible time step of standard explicit Runge--Kutta schemes available in literature. Furthermore, they have a small principal error norm and admit a low-storage implementation. The advantages of the new schemes are demonstrated through application to the Euler equations, and both laminar and turbulent Navier-Stokes equations at moderate Reynolds numbers.

Additional information, including the webcast link, can be found at the NIA CFD Seminar website, which is temporarily located at http://www.hiroakinishikawa.com/niacfds/