Title: Bifurcation Phenomena in the Flow through Open Systems

Speaker: Ed Hall, University of Nottingham

Date/Time: May 22, 2008 at 9:00 - 10:00 am

Location: CSRI Building, Room 90 (Sandia NM)

Brief Abstract: In the past, studies of bifurcation phenomena of flow in a cylindrical pipe with a sudden expansion have proven inconclusive. In a new study we seek to exploit the O(2)-symmetric properties of the problem, thus making it tractable by reducing a 3-dimensional problem to a series of 2-dimensional ones. For the numerical solution of the Navier-Stokes equations we advocate the use of a Discontinuous Galerkin method and, in addition, develop a goal-oriented eigenvalue error estimation technique to ensure the accurate location of any bifurcation points. We then apply the method to a number of well documented cases, as well as the matter at hand.

CSRI POC: Eric Phipps, 284-9268