Abstract
We provide an extensive overview of the core and special techniques developed earlier by the Team for Advanced Flow Simulation and Modeling (T{black star}AFSM) for space-time fluid-structure interaction (FSI) modeling of patient-specific cerebral aneurysms. The core FSI techniques are the Deforming-Spatial-Domain/Stabilized Space-Time (DSD/SST) formulation and the stabilized space-time FSI (SSTFSI) technique. The special techniques include techniques for calculating an estimated zero-pressure (EZP) arterial geometry, a special mapping technique for specifying the velocity profile at an inflow boundary with non-circular shape, techniques for using variable arterial wall thickness, mesh generation techniques for building layers of refined fluid mechanics mesh near the arterial walls, a recipe for pre-FSI computations that improve the convergence of the FSI computations, the Sequentially-Coupled Arterial FSI (SCAFSI) technique and its multiscale versions, techniques for the projection of fluid-structure interface stresses, calculation of the wall shear stress (WSS) and calculation of the oscillatory shear index (OSI) and arterial-surface extraction and boundary condition techniques. We show how these techniques work with results from earlier computations. We also describe the arterial FSI techniques developed and implemented recently by the T{black star}AFSM and present a sample from a wide set of patient-specific cerebral-aneurysm models we computed recently.
| Original language | English |
|---|---|
| Pages (from-to) | 1665-1710 |
| Number of pages | 46 |
| Journal | International Journal for Numerical Methods in Biomedical Engineering |
| Volume | 27 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2011 Nov |
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Keywords
- Cardiovascular fluid mechanics
- Cerebral aneurysms
- Fluid-structure interactions
- Space-time methods
- Special techniques
ASJC Scopus subject areas
- Computational Theory and Mathematics
- Software
- Applied Mathematics
- Modelling and Simulation
- Biomedical Engineering
- Molecular Biology
Cite this
Space-time fluid-structure interaction modeling of patient-specific cerebral aneurysms. / Tezduyar, Tayfun E.; Takizawa, Kenji; Brummer, Tyler; Chen, Peng R.
In: International Journal for Numerical Methods in Biomedical Engineering, Vol. 27, No. 11, 11.2011, p. 1665-1710.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Space-time fluid-structure interaction modeling of patient-specific cerebral aneurysms
AU - Tezduyar, Tayfun E.
AU - Takizawa, Kenji
AU - Brummer, Tyler
AU - Chen, Peng R.
PY - 2011/11
Y1 - 2011/11
N2 - We provide an extensive overview of the core and special techniques developed earlier by the Team for Advanced Flow Simulation and Modeling (T{black star}AFSM) for space-time fluid-structure interaction (FSI) modeling of patient-specific cerebral aneurysms. The core FSI techniques are the Deforming-Spatial-Domain/Stabilized Space-Time (DSD/SST) formulation and the stabilized space-time FSI (SSTFSI) technique. The special techniques include techniques for calculating an estimated zero-pressure (EZP) arterial geometry, a special mapping technique for specifying the velocity profile at an inflow boundary with non-circular shape, techniques for using variable arterial wall thickness, mesh generation techniques for building layers of refined fluid mechanics mesh near the arterial walls, a recipe for pre-FSI computations that improve the convergence of the FSI computations, the Sequentially-Coupled Arterial FSI (SCAFSI) technique and its multiscale versions, techniques for the projection of fluid-structure interface stresses, calculation of the wall shear stress (WSS) and calculation of the oscillatory shear index (OSI) and arterial-surface extraction and boundary condition techniques. We show how these techniques work with results from earlier computations. We also describe the arterial FSI techniques developed and implemented recently by the T{black star}AFSM and present a sample from a wide set of patient-specific cerebral-aneurysm models we computed recently.
AB - We provide an extensive overview of the core and special techniques developed earlier by the Team for Advanced Flow Simulation and Modeling (T{black star}AFSM) for space-time fluid-structure interaction (FSI) modeling of patient-specific cerebral aneurysms. The core FSI techniques are the Deforming-Spatial-Domain/Stabilized Space-Time (DSD/SST) formulation and the stabilized space-time FSI (SSTFSI) technique. The special techniques include techniques for calculating an estimated zero-pressure (EZP) arterial geometry, a special mapping technique for specifying the velocity profile at an inflow boundary with non-circular shape, techniques for using variable arterial wall thickness, mesh generation techniques for building layers of refined fluid mechanics mesh near the arterial walls, a recipe for pre-FSI computations that improve the convergence of the FSI computations, the Sequentially-Coupled Arterial FSI (SCAFSI) technique and its multiscale versions, techniques for the projection of fluid-structure interface stresses, calculation of the wall shear stress (WSS) and calculation of the oscillatory shear index (OSI) and arterial-surface extraction and boundary condition techniques. We show how these techniques work with results from earlier computations. We also describe the arterial FSI techniques developed and implemented recently by the T{black star}AFSM and present a sample from a wide set of patient-specific cerebral-aneurysm models we computed recently.
KW - Cardiovascular fluid mechanics
KW - Cerebral aneurysms
KW - Fluid-structure interactions
KW - Space-time methods
KW - Special techniques
UR - http://www.scopus.com/inward/record.url?scp=80052686126&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80052686126&partnerID=8YFLogxK
U2 - 10.1002/cnm.1433
DO - 10.1002/cnm.1433
M3 - Article
AN - SCOPUS:80052686126
VL - 27
SP - 1665
EP - 1710
JO - International Journal for Numerical Methods in Biomedical Engineering
JF - International Journal for Numerical Methods in Biomedical Engineering
SN - 2040-7939
IS - 11
ER -