Accession Number:

ADA617813

Title:

Space-Time Interface-Tracking Computations with Contact Between Solid Surfaces

Descriptive Note:

Master's thesis

Corporate Author:

RICE UNIV HOUSTON TX

Personal Author(s):

Report Date:

2014-04-01

Pagination or Media Count:

93.0

Abstract:

To address the computational challenges associated with contact between moving solid surfaces, such as those in cardiovascular fluidstructure interaction FSI, parachute FSI, and flapping-wing aerodynamics, we introduce a spacetime ST interface-tracking method that can deal with topology change TC. In cardiovascular FSI, our primary target is heart valves. The method is a new version of the Deforming-Spatial-DomainStabilized ST DSDSST method, and we call it ST-TC. It includes a masterslave system that maintains the connectivity of the parent mesh when there is contact between the moving interfaces. It is an e efficient, practical alternative to using unstructured ST meshes, but without giving up on the accurate representation of the interface or consistent representation of the interface motion. We explain the method with conceptual examples and present 2D and 3D test computations with models representative of the classes of problems we are targeting.

Subject Categories:

  • Aerodynamics
  • Numerical Mathematics
  • Theoretical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE