...-and-release fishing, whereby a fish is caught and immediately released, has been implemented in many countries. It is unclear whether the injuries to the mouth that are caused by the hook have an impact on feeding performance of fishes. Using high-speed video and computational fluid dynamics (CFD), we asked...

... limited by strong laser reflections that interfere with velocity measurements proximate to the siphon. We used a new approach based on fitting PIV-based velocity profile measurements to theoretical profiles from computational fluid dynamic (CFD) models, which allowed us to calculate inhalant siphon...

... that encourage refuging in fish. Vortex street Oncorhynchus   mykiss Kármán gait Flow visualization DPIV CFD Turbulence Swimming Fishes in current-swept environments must successfully navigate complex flows while performing tasks that are essential for survival, such as foraging for prey...

... contributions R.H. and D.E. conceived and designed the research; R.H. conducted filming and morphological measurements; S.Y. conducted the CFD experiments; R.H. and S.Y. analyzed the results; R.H., S.Y. and D.E. wrote the paper. Competing interests The authors declare no competing financial interests...

... dynamics CFD computational swimming dynamics CSD free swimming zebrafish cyclic swimming C-start flow pattern intermediate flow regime body wave amplitude Many aquatic animals, especially fishes, rely on body undulations to swim. The kinematics and hydrodynamics of this so-called ‘body...

... snapshots on each plane had to be time averaged. The disadvantage of this method is that no information about the spatial structure of the unsteady flow is available. Therefore, numerical computations CFD were performed in addition to the measurements. The bases for the CFD simulations are the equation...

...Hao Liu; Charles P. Ellington; Keiji Kawachi; Coen Van Den Berg; Alexander P. Willmott ABSTRACT A computational fluid dynamic (CFD) modelling approach is used to study the unsteady aerodynamics of the flapping wing of a hovering hawkmoth. We use the geometry of a Manduca sexta -based robotic wing...