6 papers · 1 filter
Improving the robustness of the immersed interface method through regularized velocity reconstruction
Qi Sun, Ebrahim M. Kolahdouz, Boyce E. Griffith
Robust, broadly applicable fluid-structure interaction (FSI) algorithms remain a challenge for computational mechanics. In previous work, we introduced an immersed interface method…
Composite B-Spline Regularized Delta Functions for the Immersed Boundary Method: Divergence-Free Interpolation and Gradient-Preserving Force Spreading
Cole Gruninger, Boyce E. Griffith
This paper presents an approach to enhance volume conservation in the immersed boundary (IB) method by using regularized delta functions derived from composite B-splines. The conve…
Adaptive Mesh Refinement for Two-Phase Viscoelastic Fluid Mixture Models
Bindi M. Nagda, Aaron Barrett, Boyce E. Griffith +2
Multiphase flows are an important class of fluid flow and their study facilitates the development of diverse applications in industrial, natural, and biomedical systems. We conside…
An Immersed Interface Method for Incompressible Flows and Geometries with Sharp Features
Michael J. Facci, Ebrahim M. Kolahdouz, Boyce E. Griffith
The immersed interface method (IIM) for models of fluid flow and fluid-structure interaction imposes jump conditions that capture stress discontinuities generated by forces that ar…
Sensitivity of ECG QRS Complexes to His-Purkinje Structure in Computational Heart Models
Preetam V. Tanikella, Laryssa Abdala, Karin Leiderman +2
Cardiac digital twins (CDT) are emerging as a potentially transformative tool in cardiology. A critical yet understudied determinant of CDT accuracy is the His-Purkinje system (HPS…
An efficient and accurate semi-implicit time integration scheme for dynamics in nearly- and fully-incompressible hyperelastic solids
Edward M. Terrell, Boyce E. Griffith
The choice of numerical integrator in approximating solutions to dynamic partial differential equations depends on the smallest time-scale of the problem at hand. Large-scale defor…