Results 11 to 20 of about 2,252 (180)
Surface drag reduction and flow separation control in pelagic vertebrates, with implications for interpreting scale morphologies in fossil taxa. [PDF]
R Soc Open Sci, 2015 Living in water imposes severe constraints on the evolution of the vertebrate body. As a result of these constraints, numerous extant and extinct aquatic vertebrate groups evolved convergent osteological and soft-tissue adaptations.
Palmer C, Young MT.
europepmc +2 more sources
EFFECTS OF TWO TYPES OF CONTROLLABLE DEFORMATION ON ENERGY EXTRACTION OF A FLEXIBLE HYDROFOIL
Brodogradnja, 2022 Energy extraction capacity of controllably flexible hydrofoil was studied under two identified deformation modes. Deformation modes, flexure parameters (flexure amplitude and flexure coefficient ) and motion parameters (reduced frequency f* and ...
Yubing Zhang +4 more
doaj +1 more source
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
doaj +1 more source
An experimental study of boundary-layer transition induced vibrations on a hydrofoil [PDF]
, 2012 This paper aims at characterizing experimentally laminar to turbulent transition induced vibrations. Here, the transition is known to be triggered by a Laminar Separation Bubble that results from a laminar separation of the boundary-layer flow on a ...
ASTOLFI, Jacques Andre +2 more
core +8 more sources
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
openaire +4 more sources
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
doaj +1 more source
Shape-optimization of 2D hydrofoils using an isogeometric BEM solver [PDF]
, 2016 In this paper, an optimization procedure, based on an Isogeometric BEM solver for the potential flow, is developed and used for the shape optimization of hydrofoils.
A.I. Ginnis +39 more
core +7 more sources
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
Ocean energy:the wave of the future [PDF]
, 2008 The power point presentation discussed the developing technology of ocean energy with design convergence on tidal but not on wave. Today's technologies will help solve the immediate needs, but we need to work hard nurturing tomorrow's low carbon ...
Aggidis, George A.
core +1 more source