Results 21 to 30 of about 11,483,688 (354)
Effects of gradual flexibility and trailing edge shape on propulsive performance of pitching fins
The Physics of Fluids, 2021 This paper addresses hydrodynamic performance of fins regarding their trailing edge convexity–concavity and flexibility distribution. The effects of trailing edge convexity–concavity on propulsive performance and vortex dynamics were investigated ...
L. Yao, C. Hefler, W. Shyy, H. Qiu
semanticscholar +1 more source
Comparative jet wake structure and swimming performance of salps [PDF]
, 2010 Salps are barrel-shaped marine invertebrates that swim by jet propulsion. Morphological variations among species and life-cycle stages are accompanied by differences in swimming mode.
Madin, Laurence P., Sutherland, Kelly R.
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International journal of numerical methods for heat & fluid flow, 2021 Purpose This paper aims to analyze the propulsive performance of small-amplitude pitching foils at very high frequencies with double objectives: to find out scaling laws for the time-averaged thrust and propulsive efficiency at very high frequencies ...
E. Sanmiguel-Rojas, R. Fernández-Feria
semanticscholar +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
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Swimming mechanics and propulsive efficiency in the chambered nautilus [PDF]
Royal Society Open Science, 2018 The chambered nautilus (Nautilus pompilius) encounters severe environmental hypoxia during diurnal vertical movements in the ocean. The metabolic cost of locomotion (Cmet) and swimming performance depend on how efficiently momentum is imparted to the ...
Thomas R. Neil, Graham N. Askew
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Propulsion system performance resulting from an Integrated Flight/Propulsion Control design [PDF]
Astrodynamics Conference, 1992 Propulsion-system-specific results are presented from the application of the integrated methodology for propulsion and airframe control (IMPAC) design approach to integrated flight/propulsion control design for a 'short takeoff and vertical landing' (STOVL) aircraft in transition flight.
DUANE MATTERN, SANJAY GARG
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Numerical Investigation of the Semi-Active Flapping Foil of the Wave Glider
Journal of Marine Science and Engineering, 2019 A numerical investigation is conducted to study the propulsive performance of the semi-active flapping foil of the wave glider, where the heaving smotion is fully prescribed, and the pitching motion is determined by the hydrodynamic force and torsion ...
Zhanfeng Qi +6 more
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Installed performance assessment of a boundary layer ingesting distributed propulsion system at design point [PDF]
, 2016 Boundary layer ingesting systems have been proposed as a concept with great potential for reducing the fuel consumption of conventional propulsion systems and the overall drag of an aircraft.
Goldberg, Chana +3 more
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Effects of Regular Waves on Propulsion Performance of Flexible Flapping Foil
Applied Sciences, 2018 The objective of the present study is to analyze the effects of waves on the propulsive performance and flow field evolution of flexible flapping foil, and then offer a way to take advantage of wave energy.
Peng Liu +4 more
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Determining the Optimum Power Load in Jump Squat Using the Mean Propulsive Velocity. [PDF]
PLoS ONE, 2015 The jump squat is one of the exercises most frequently used to improve lower body power production, which influences sports performance. However, the traditional determination of the specific workload at which power production is maximized (i.e., optimum
Irineu Loturco +9 more
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