Energy extraction of two flapping foils with tandem configurations and vortex interactions
Sign Up to like & getrecommendations! Published in 2017 at "Engineering Analysis With Boundary Elements"
DOI: 10.1016/j.enganabound.2017.06.010
Abstract: Abstract The energy extraction of two flapping foils with tandem configurations has been studied based on velocity potential theory. The interactions of the hind foil and the vortices of the fore foil with typical oscillatory… read more here.
Keywords: extraction two; two flapping; energy; flapping foils ... See more keywords
Universal scaling law for drag-to-thrust wake transition in flapping foils
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.361
Abstract: Reversed von Kármán streets are responsible for a velocity surplus in the wake of flapping foils, indicating the onset of thrust generation. However, the wake pattern cannot be predicted based solely on the flapping peak-to-peak… read more here.
Keywords: transition; flapping foils; drag thrust; thrust wake ... See more keywords
Deflected wake interaction of tandem flapping foils
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2020.640
Abstract: Abstract Symmetric flapping foils are known to produce deflected jets at high frequency–amplitude combinations even at a zero mean angle of attack. This reduces the frequency range of useful propulsive configurations without side force. In… read more here.
Keywords: flapping foils; back foil; interaction; wake interaction ... See more keywords
Dynamic interference of two anti-phase flapping foils in side-by-side arrangement in an incompressible flow
Sign Up to like & getrecommendations! Published in 2017 at "Physics of Fluids"
DOI: 10.1063/1.4978301
Abstract: A two-dimensional computational hydrodynamic model is developed to investigate the propulsive performance of a flapping foil system in viscous incompressible flows, which consists of two anti-phase flapping foils in side-by-side arrangement. In the simulations, the… read more here.
Keywords: foil; flapping foils; phase flapping; two anti ... See more keywords