A remeshed vortex method is used to simulate the flow interactions between four side-by-side self-propelled swimmers. The simulation was performed using both the CPUs and GPUs of a single modern compute node. We visualize the vorticity field using a volume rendering technique. More details can be found in my PhD thesis at ETH Zurich, online available at http://e-collection.library.ethz.ch/view/eth:47625 .
Partial credit: Diego Rossinelli and Petros Koumoutsakos. Visualized tool developed by Diego Rossinelli.