Abstract
We present a fast multipole method (FMM) for computing sums involving the Rotne-Prager-Yamakawa tensor. The method, similar to the approach in Tornberg and Greengard (2008) [26] for the Stokeslet, decomposes the tensor vector product into a sum of harmonic potentials and fields induced by four different charge and dipole distributions. Unlike the approach based on the kernel independent fast multipole method (Ying et al., 2004) [31], which requires nine scalar FMM calls, the method presented here requires only four. We discuss its applications to Brownian dynamics simulation with hydrodynamic interactions, and present some timing results.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 133-139 |
| Number of pages | 7 |
| Journal | Journal of Computational Physics |
| Volume | 234 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2013 |
All Science Journal Classification (ASJC) codes
- Numerical Analysis
- Modeling and Simulation
- Physics and Astronomy (miscellaneous)
- General Physics and Astronomy
- Computer Science Applications
- Computational Mathematics
- Applied Mathematics
Keywords
- Brownian dynamics
- Fast multipole method
- Hydrodynamic interaction
- Krylov subspace approximation
- Lanzcos iteration
- Rotne-prager-yamakawa tensor
- Square root matrix