Lubricated immersed boundary method in two dimensions
- Harvard Univ., Cambridge, MA (United States). Paulson School of Engineering
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Mathematics Group
Many biological examples of fluid-structure interaction, including the transit of red blood cells through the narrow slits in the spleen and the intracellular trafficking of vesicles into dendritic spines, involve the near-contact of elastic structures separated by thin layers of fluid. Motivated by such problems, we introduce an immersed boundary method that uses elements of lubrication theory to resolve thin fluid layers between immersed boundaries. We demonstrate 2nd-order accurate convergence for simple two-dimensional flows with known exact solutions to showcase the increased accuracy of this method compared to the standard immersed boundary method. Motivated by the phenomenon of wall-induced migration, we apply the lubricated immersed boundary method to simulate an elastic vesicle near a wall in shear flow. We also simulate the dynamics of a vesicle traveling through a narrow channel and observe the ability of the lubricated method to capture the vesicle motion on relatively coarse fluid grids.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21); NSF
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1526510
- Alternate ID(s):
- OSTI ID: 1576609; OSTI ID: 23078188
- Journal Information:
- Journal of Computational Physics, Journal Name: Journal of Computational Physics Journal Issue: C Vol. 356; ISSN 0021-9991
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Parallel three-dimensional simulations of quasi-static elastoplastic solids | text | January 2019 |
Two-dimensional Finite Element Model of Breast Cancer Cell Motion Through a Microfluidic Channel
|
journal | January 2019 |
Coarse graining the dynamics of immersed and driven fiber assemblies
|
journal | July 2019 |
Similar Records
Simulation of Osmotic Swelling by the Stochastic Immersed Boundary Method
A numerical approach for simulating fluid structure interaction of flexible thin shells undergoing arbitrarily large deformations in complex domains