Journal
COMPUTATIONAL MECHANICS
Volume 54, Issue 4, Pages 955-971Publisher
SPRINGER
DOI: 10.1007/s00466-013-0935-7
Keywords
FSI with contact; Cardiovascular FSI; Heart valves; Parachute FSI; Flapping-wing aerodynamics; Space-time interface-tracking; DSD/SST method; Topology change
Funding
- JST-CREST
- Rice-Waseda
- ARO [W911NF-12-1-0162]
- NASA Johnson Space Center Grant [NNX13AD87G]
- NASA [NNX13AD87G, 475258] Funding Source: Federal RePORTER
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To address the computational challenges associated with contact between moving interfaces, such as those in cardiovascular fluid-structure interaction (FSI), parachute FSI, and flapping-wing aerodynamics, we introduce a space-time (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-domain/stabilized space-time (DSD/SST) method, and we call it ST-TC. It includes a master-slave system that maintains the connectivity of the parent mesh when there is contact between the moving interfaces. It is an 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 test computations with models representative of the classes of problems we are targeting.
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