Results 41 to 50 of about 9,942,018 (291)

The Effect of Mass Ratio and Damping Coefficient on the Propulsion Performance of the Semi-Active Flapping Foil of the Wave Glider

open access: yesJournal of Marine Science and Engineering, 2020
A numerical investigation on the propulsion performance of the semi-active flapping foil of the wave glider with different mass ratio and damping coefficient is investigated.
Zhanfeng Qi   +4 more
doaj   +1 more source

Numerical Analysis of the Effect of Flexibility on the Propulsive Performance of a Heaving Hydrofoil Undergoing Sinusoidal and Non-Sinusoidal Motions

open access: yesPolish 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

NUMERICAL STUDY ON PROPULSIVE FACTORS IN REGULAR HEAD AND OBLIQUE WAVES

open access: yesBrodogradnja, 2022
This paper applies Reynolds-averaged Navier-Stokes (RANS) method to study propulsion performance in head and oblique waves. Finite volume method (FVM) is employed to discretize the governing equations and SST k-ω model is used for modeling the turbulent ...
Kun Dai   +5 more
doaj   +1 more source

How structural disorder and polyelectrolyte properties of prothymosin α enable its large interactome

open access: yesFEBS Letters, EarlyView.
In this review, complexes of the fully disordered and highly negatively charged prothymosin α are collected, described, and discussed. Linked to its poly‐electrostatic character, prothymosin α engages a large interactome through multiple different binding modes ranging from fully disordered complexes to short linear motif (SLiM)‐driven interactions ...
Ketty C. Tamburrini   +3 more
wiley   +1 more source

Performance of Very Small Robotic Fish Equipped with CMOS Camera

open access: yesRobotics, 2015
Underwater robots are often used to investigate marine animals. Ideally, such robots should be in the shape of fish so that they can easily go unnoticed by aquatic animals.
Yang Zhao   +3 more
doaj   +1 more source

Flow Interactions Between Low Aspect Ratio Hydrofoils in In-line and Staggered Arrangements

open access: yesBiomimetics, 2020
Many species of fish gather in dense collectives or schools where there are significant flow interactions from their shed wakes. Commonly, these swimmers shed a classic reverse von Kármán wake, however, schooling eels produce a bifurcated wake topology ...
Melike Kurt   +2 more
doaj   +1 more source

Circulating microRNA signatures of cachexia and cancer in Canis familiaris as a comparative oncology model for human disease

open access: yesMolecular Oncology, EarlyView.
Circulating microRNAs as biomarkers of cachexia and sex‐specific cancer in senior dogs. In 25 client‐owned dogs, four circulating miRNAs (miR‐15a, miR‐15b, miR‐16, miR‐140) were downregulated in cachexia, with miR‐16 the strongest individual biomarker (AUC = 0.899).
Soon‐Seok Park   +6 more
wiley   +1 more source

On the Effect of a Rudder on Propulsive Performance

open access: yesJournal of the Society of Naval Architects of Japan, 1981
In designing a ship, it is important to estimate the effects of the propeller-rudder interaction, as the rudder behind a propeller has a great effect on the propulsive performance of a ship. This interaction problem has been treated theoretically by applying the thin wing theory to the rudder, and the hydrodynamical forces have been discussed.In this ...
openaire   +2 more sources

More push from your push-off: Joint-level modifications to modulate propulsive forces in old age.

open access: yesPLoS ONE, 2018
IntroductionCompared to young adults, older adults walk with smaller propulsive forces and a redistribution to more proximal leg muscles for power generation during push-off. Despite this deficit in propulsive function, older adults can increase push-off
Michael G Browne, Jason R Franz
doaj   +1 more source

Two-dimensional numerical simulation of NACA 0012 flapping foil hydrodynamics

open access: yesZhongguo Jianchuan Yanjiu, 2018
[Objectives] In order to study the impact of the hydrodynamic performance of foil in the design of a wave glider,[Methods] on account of the characteristics of the oscillating foil when the wave glider is heaving, and based on the Dynamic Fluid Body ...
LV Yuanbo   +3 more
doaj   +1 more source

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