Results 11 to 20 of about 172 (142)
Energies, 2021 The paper focuses on the study of a semi-activated system, based on a combination of two movements of forced pitching and free-heaving motion. Therefore, quantifying with accuracy the hydrodynamic forces applied on the hydrofoil seems to be crucial. This
Paul Brousseau +2 more
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Systematic micro heat sink optimization based on hydrofoil shape pin fins
Case Studies in Thermal Engineering, 2021 Multi-objective optimization of the hydrofoil shaped pin fins for micro heat sinks was studied. Optimization tool utilized a multi objective genetic algorithm (MOGA) and a numerical model that was validated against previously obtained experimental single-
Fuad Ismayilov, Ali Akturk, Yoav Peles
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Flexible hydrofoil optimization for the 35th America's Cup with constrained EGO method [PDF]
Ocean Engineering, 2018 This paper investigates the use of constrained surrogate models to solve the multi-design optimization problem of a flexible hy-drofoil. The surrogate-based optimization (EGO) substitutes the complex objective function of the problem by an easily evaluable model, constructed from a limited number of computations at carefully selected design points ...
Sacher, Matthieu +6 more
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Polish Maritime Research, 2022 Numerical simulations of fluid-structure interaction (FSI) on an elastic foil heaving with constant amplitude in freestream flow are carried out at a low Reynolds number of 20,000. The commercial software STAR-CCM+ is employed to solve the flow field and
Li Fengkun +4 more
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Developments and Challenges of Miniature Piezoelectric Robots: A Review
Advanced Science, Volume 10, Issue 36, December 27, 2023., 2023 Miniature piezoelectric robots (MPRs) have exhibited many highlight features and captured considerable attentions and favor of numerous scholars. A comprehensive review of recent development in MPRs is provided, including the operating environment, the structure of piezoelectric actuating element, working principle, attempts of new fabricated methods ...
Jing Li +5 more
wiley +1 more source
International Journal of Tourism Research, Volume 25, Issue 5, Page 506-516, September/October 2023., 2023 Abstract Debates on island tourism have challenged the inevitability of underdevelopment in peripheral islands. A paradox of geopolitical dependency but optimal autonomy has been proposed where tourism can create a ‘virtuous periphery syndrome’.
Karl Agius, Samantha Chaperon
wiley +1 more source
A GIS framework for prediction of basin‐wide post‐failure geometry of confined subaqueous landslides
International Journal for Numerical and Analytical Methods in Geomechanics, Volume 47, Issue 13, Page 2405-2437, September 2023., 2023 Abstract Stability analysis of submarine and sub‐lacustrine slopes requires special attention to the strain‐softening nature of clay‐rich sediments. Utilizing the often‐used infinite slope assumption using the peak strength is inadequate for the task at hand as the well‐known limit equilibrium method may provide non‐conservative estimate of marine ...
Boaz Klein +2 more
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Deep‐time invention and hydrodynamic convergences through amniote flipper evolution
The Anatomical Record, Volume 306, Issue 6, Page 1323-1355, June 2023., 2023 Abstract The diapsid plesiosaurs were pelagic and inhabited the oceans from the Triassic to the Cretaceous. A key evolutionary character of plesiosaurs is the four wing‐like flippers. While it is mostly accepted that plesiosaurs were underwater fliers like marine turtles, penguins, and maybe whales, other swimming styles have been suggested in the past.
Anna Krahl, Ingmar Werneburg
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Beltrami fields and knotted vortex structures in incompressible fluid flows
Bulletin of the London Mathematical Society, Volume 55, Issue 3, Page 1059-1103, June 2023., 2023 Abstract This paper gives a survey on recent results about the existence of knotted vortex structures in incompressible fluids. This includes the proof of Lord Kelvin's conjecture on the existence of knotted vortex tubes in steady Euler flows and a new probabilistic approach to address Arnold's speculation that typical Beltrami fields should exhibit ...
Alberto Enciso, Daniel Peralta‐Salas
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Vortex Shedding From a Flexible Hydrofoil
, 2011 Video of vortex shedding in the wake of a Naca0009 hydrofoil made of polyoxymethylene type C (POM C). This video was submitted as part of the Gallery of Fluid Motion 2011 which is showcase of fluid dynamics videos.
Dreyer, Matthieu, Farhat, Mohamed
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