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HYDRODYNAMIC PERFORMANCE [4 records]

Record 1 2022-05-31

English

Subject field(s)
  • Collaboration with the FAO
  • Commercial Fishing
CONT

The shape optimization approach of the cambered otter board has been performed by the integration of the neural network model and the multi-objective genetic algorithm... the excellent performance of the otter board is expressed by great lift and less drag force... The Bézier curve represented the cambered otter board as a simple structure with five control points... The hydrodynamic characteristics of [the] otter board models were calculated in a two-dimension computational fluid dynamics(CFD) analysis at an attack angle of 20 [degrees].

OBS

Of an otter trawl.

PHR

oval cambered otter board

PHR

oval cambered double slotted otter board, oval cambered single slotted otter board

Key term(s)
  • cambered otterboard

French

Domaine(s)
  • Collaboration avec la FAO
  • Pêche commerciale
OBS

D'un chalut à panneaux.

PHR

panneau cintré à fentes, panneau cintré à 1 fente

PHR

panneau ovale cintré à 1 fente

Spanish

Save record 1

Record 2 2021-02-04

English

Subject field(s)
  • Fluid Mechanics and Hydraulics (Physics)
CONT

Optimizing the structure of otter-boards may improve their hydrodynamic performance and reduce the energy consumption of fishing vessels...

Key term(s)
  • hydrodynamical performance

French

Domaine(s)
  • Mécanique des fluides et hydraulique (Physique)
CONT

Le rendement hydrodynamique est variable selon la conception du panneau [de chalut]. La résultante des forces s'exerçant sur le panneau […], appelée «force du panneau», est dirigée selon une direction à peu près perpendiculaire au panneau […]

Spanish

Campo(s) temático(s)
  • Mecánica de fluidos e hidráulica (Física)
CONT

El diseño de las puertas de arrastre a pesar de su sencillez y bajo costo, no es el mejor por su bajo rendimiento hidrodinámico.

Save record 2

Record 3 2019-07-31

English

Subject field(s)
  • Sea Operations (Military)
  • Submarines (Naval Forces)
  • Underwater Navigation Equipment
CONT

Built for submerged operations, the Barbel was a conventional predecessor to the Skipjackclass with an improved teardrop hull design for increased hydrodynamic performance.

French

Domaine(s)
  • Opérations en mer (Militaire)
  • Sous-marins (Forces navales)
  • Appareils de navigation sous-marine

Spanish

Save record 3

Record 4 2017-09-08

English

Subject field(s)
  • Engineering Tests and Reliability
  • Fluid Mechanics and Hydraulics (Physics)
  • Shipbuilding
DEF

A physical basin or tank used to carry out hydrodynamic tests with ship models, for the purpose of designing a new(full sized) ship, or refining the design of a ship to improve the ship's performance at sea.

CONT

Deep enough to test underwater vehicles and equipped with a tow carriage fast enough to test high-speed vessels such as warships, [the] towing tank is used to simulate marine conditions and evaluate the performance of a range of marine systems including bulk carriers, patrol vessels, sailing yachts, ice breakers, and submarines among others.

French

Domaine(s)
  • Fiabilité, contrôle et essais (Ingénierie)
  • Mécanique des fluides et hydraulique (Physique)
  • Constructions navales
CONT

D'une profondeur suffisante pour faire l'essai de véhicules sous marins et doté d'un réservoir à chariot mobile assez rapide pour faire l'essai de navires à grande vitesse (comme des navires de guerre), le bassin d'essais de carènes [...] sert à simuler les conditions maritimes et à évaluer le rendement d'un éventail de systèmes maritimes, y compris les vraquiers, les patrouilleurs, les voiliers, les brise glaces et les sous marins.

OBS

bassin d'essais des carènes : terme uniformisé par le Comité de normalisation de la terminologie navale.

Spanish

Campo(s) temático(s)
  • Fiabilidad y ensayos (Ingeniería)
  • Mecánica de fluidos e hidráulica (Física)
  • Construcción naval
DEF

Canal o depósito de agua de gran tamaño donde se ensayan modelos de barcos a escala.

CONT

El canal de ensayos hidrodinámicos [...] permite conjugar los estudios experimentales y numéricos en la optimización de las formas de distintos tipos de embarcaciones, tomando en cuenta la estabilidad, la propulsión, la resistencia y el comportamiento en la mar.

Save record 4

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