Overcoming fluid-structure instabilities for incompressible flows and light bodies
TITLE:
Overcoming fluid-structure instabilities for incompressible flows and light bodies
DATE:
Friday, April 13th, 2018
TIME:
3:30 PM
LOCATION:
GMCS-314
SPEAKER:
Dr. Bill Henshaw, Mathematical Sciences, Rensselaer Polytechnic Institute.
ABSTRACT:
The added-mass instability has, for decades, plagued partitioned fluid-structure
interaction (FSI) simulations of incompressible flows coupled to light solids
and structures. Many current approaches require tens or hundreds of expensive
sub-iterations per time-step. In this talk some new stable partitioned algorithms
are described for coupling incompressible flows with (1) compressible elastic
bulk solids, (2) thin structural beams and (3) rigid bodies. These added-mass
partitioned (AMP) schemes require no sub-iterations, can be made fully second-
or higher-order accurate, and remain stable even in the presence of strong
added-mass effects. These schemes are implemented using moving and deforming
overlapping grids with the Overture framework.
HOST:
Dr. Jose Castillo
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