The 22nd National Computational Fluid Dynamics Conference
The energetically dominant flow features in a fish wake can be successfully extracted according to the criterion based on the Froude propulsive efficiency.
Caudal fin-wave propagation assists in the production of a compensating pitching moment that counterbalances the destabilizing pitching moment induced by the buoyancy and pectoral-fin stroke of a fish.
Quantify the body and drag forces acting on the fish, was achieved by estimating fish and drag acting on the fish with an error of less than 5%.
The investigation of the wake reveals a fish jet with alternating shedding vortices at the edges of the jet. The angle of the jet is up to +/- 30 degrees from the downstream direction with the jet bounded by the vortical structures in the wake.
