NATIONAL INSTITUTE OF AEROSPACE

Contact Us

Colin Britcher, Ph.D.
Director of Graduate Education
757.325.6730
colin.britcher@nianet.org  

Mary Catherine Bunde, M.Ed.
Senior Education Administrator
757.325.6731
mary.bunde@nianet.org

2.18.14 Diskin

43rd NIA CFD Seminar:
EVALUATION OF MULTIGRID SOLUTIONS FOR TURBULENT FLOWS

Boris Diskin, NIA
February 18, 2014, 11:00 am, NIA, Rm 101

Abstract:
A multigrid methodology has been recently developed in a NASA solver, FUN3D, and successfully applied for a wide range of turbulent flows, from simple two-dimensional geometries to realistic three-dimensional configurations. The methodology is applicable to structured- and unstructured-grid solutions and includes both regular and agglomeratedcoarse meshes. Significant speed-ups over single-grid computations have been demonstrated. In the current work, we report on a detailed evaluation of the solver performance in computing benchmark turbulent flows. For those benchmark computations, multigrid solutions are compared with the corresponding single-grid solutions in terms of time-to-solution characteristics measured in the same computing environment. Multigrid efficiency enables a grid-refinement study of a turbulent flow around an airfoil that is discussed in detail. This talk is an extended version of the talk presented at AIAA SciTech-2014 conference.

Biography:
Dr. Boris Diskin is Research Fellow at NIA. He earned Ph.D. in Applied Mathematics at The Weizmann Institute of Science, Israel in 1998. He was a Senior Research Scientist at ICASE and joined NIA from its inception in 2003. His area of expertise is adjoint-based optimization and grid adaptation methods, finite-volume discretizations, and multigrid methods.

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/

BUSINESS WITH NIA

Headquarters

100 Exploration Way
Hampton, VA 23666
(757)325-6700
www.nianet.org