Results 1 to 10 of about 16,736 (167)
How Non-Uniform Stiffness Affects the Propulsion Performance of a Biomimetic Robotic Fish [PDF]
Biomimetics, 2022 Live fish in nature exhibit various stiffness characteristics. The anguilliform swimmer, like eels, has a relatively flexible body, while the thunniform swimmer, like the swordfishes, has a much stiffer body.
Changzhen Zheng +5 more
doaj +2 more sources
Prediction of Propulsion Kinematics and Performance in Wheelchair Rugby
Frontiers in Sports and Active Living, 2022 Prediction of propulsion kinematics and performance in wheelchair sports has the potential to improve capabilities of individual wheelchair prescription while minimizing testing requirements.
David S. Haydon +8 more
doaj +3 more sources
Hydrodynamic Characteristics of an Electric Eel-Like Undulating Fin [PDF]
Journal of Applied Fluid Mechanics, 2023 Taking the electric eel as a bionic object, a long undulatory fin is designed. The turbulent model standard k-ε is used to solve the N‒S equation of a three-dimensional unsteady incompressible fluid. The hydrodynamic characteristics of the undulatory fin
M. Zhang, C. Wang, Y. Su
doaj +1 more source
Propulsive Performance of Morphing and Heaving Foil
Volume 5B: Ocean Engineering; Honoring Symposium for Professor Günther F. Clauss on Hydrodynamics and Ocean Engineering, 2022 Abstract Biological locomotion, observed in the flexible wings of birds and insects, bodies and fins of aquatic mammals and fishes, consists of their ability to morph the wings/fins. The morphing capability holds significance in the ability of fishes to swim upstream without spending too much energy and that of birds to glide for ...
Singh, Pragalbh Dev +3 more
openaire +2 more sources
Experimental study of the wake interaction between two vertical axis wind turbines
Wind Energy, 2023 Wakes and wake interactions in wind turbine arrays diminish energy output and raise the risk of structural fatigue; hence, comprehending the features of rotor–wake interactions is of practical relevance.
Ming Huang +3 more
doaj +1 more source
On the performance of electrohydrodynamic propulsion [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2013 Partially ionized fluids can gain net momentum under an electric field, as charged particles undergo momentum-transfer collisions with neutral molecules in a phenomenon termed an ionic wind. Electrohydrodynamic (EHD) thrusters generate thrust by using two or more electrodes to ionize the ambient fluid and create an electric field ...
Kento Masuyama, Steven R. H. Barrett
openaire +1 more source
On the wake deflection of vertical axis wind turbines by pitched blades
Wind Energy, 2023 Wake losses are a critical consideration in wind farm design. The ability to steer and deform wakes can result in increased wind farm power density and reduced energy costs and can be used to optimize wind farm designs.
Ming Huang +2 more
doaj +1 more source
Aerospace, 2023 A three-dimensional upwind conservation element and solution element method (CESE) in cylindrical coordinates is first developed to effectively solve the unsteady reactive Euler equations governing a hydrogen–air rotating detonation engine (RDE) with ...
Lisong Shi +5 more
doaj +1 more source
Propulsion performance of a skeleton-strengthened fin [PDF]
Journal of Experimental Biology, 2008 SUMMARYWe examine numerically the performance of a thin foil reinforced by embedded rays resembling the caudal fins of many fishes. In our study, the supporting rays are depicted as nonlinear Euler–Bernoulli beams with three-dimensional deformability.
Qiang, Zhu, Kourosh, Shoele
openaire +2 more sources
Propulsive performance of plunging airfoils in biplane configuration
Physics of Fluids, 2022 Biplane configuration of pure plunging airfoils is investigated in terms of vortex dynamics both experimentally and numerically by utilizing particle image velocimetry and unstructured finite volume solver of incompressible unsteady Navier–Stokes equations.
S. B. Yucel, M. Sahin, M. F. Unal
openaire +2 more sources