Bulletin of the American Physical Society
75th Annual Meeting of the Division of Fluid Dynamics
Volume 67, Number 19
Sunday–Tuesday, November 20–22, 2022; Indiana Convention Center, Indianapolis, Indiana.
Session U36: Particle-Laden Flows: Modeling, Theory, and Experimentation I
8:00 AM–10:36 AM,
Tuesday, November 22, 2022
Room: 244
Chair: Shankar Subramaniam, Iowa State University
Abstract: U36.00012 : Fluid structure interaction simulation of subaqueous spherical objects: Soft sphere collision*
10:23 AM–10:36 AM
Presenter:
Dominik Worf
(University of Natural Resources and Life Sciences, Vienna)
Authors:
Dominik Worf
(University of Natural Resources and Life Sciences, Vienna)
Ali Khosronejad
(Stony Brook University)
Christine Sindelar
(University of Natural Resources and Life Sciences, Vienna)
To simulate such collisions, we implemented a soft sphere collision model with a lubrication model in the context of the immersed boundary model within our in-house and openly available code, i.e., the so-called Virtual Flow Simulator (VFS-Geophysics) model. The implemented collision model was validated according to available data of collision experiments and used to simulate colliding subaqueous spherical pendulums, showing good agreement with experiments done in our hydraulic laboratory.
Allowing for more general shapes in future development, the collision detection was implemented with different possibilities to compute contact points on the objects surfaces and their distance, e.g. spheres, oriented bounding boxes, and convex distance calculations.
*This research was funded by the Austrian Science Fund (FWF) [P 33493]. The computational resources for this work were provided by the Civil Engineering Department at Stony Brook University
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