Performance enhancement of a vortex ring thruster by adopting the Coanda effect
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Marine Science and Technology"
DOI: 10.1007/s00773-024-01014-2
Abstract: A vortex ring thruster (VRT) is a propulsion device in which a piston pushes fluid and thrusts it in reaction. As the fluid inside a VRT is moving, the boundary layer near the wall at… read more here.
Keywords: propulsion performance; jet; coanda jet; performance ... See more keywords
The effects of pre-swirl ducts on the propulsion performance of conventional ship: an experimental study
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the Brazilian Society of Mechanical Sciences and Engineering"
DOI: 10.1007/s40430-018-1476-y
Abstract: In the current study, the propulsion performance of a conventional ship is experimentally evaluated via self-propulsion tests under four different pre-swirl ducts compared to a case with no duct. For this purpose, the Series-60 ship… read more here.
Keywords: duct; propulsion; propulsion performance; conventional ship ... See more keywords
Numerical research on mechanism of the effect of propeller shaft brackets on wake field and propulsion performance
Sign Up to like & getrecommendations! Published in 2021 at "Ocean Engineering"
DOI: 10.1016/j.oceaneng.2021.108959
Abstract: Abstract Ship drag and self-propulsion simulations of a twin-screw high-speed displacement vessel were performed using the unsteady Reynolds-averaged Navier–Stokes (RANS) method. The sliding mesh and overset mesh methods were applied concurrently to simulate the coupling… read more here.
Keywords: shaft brackets; shaft; propeller; propulsion performance ... See more keywords
Analytical results for pitching kinematics and propulsion performance of flexible foil
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2023.1028
Abstract: Abstract Natural flyers and swimmers employ flexible wings or fins to propel. While the complex interaction between the foil with deformation and the surrounding non-steady fluid environment defines the propulsion performance of the propellers, elucidating… read more here.
Keywords: kinematics; propulsion performance; performance flexible; foil ... See more keywords
Investigation of the evolution process and propulsion performance of the longitudinal pulsed detonation in rotating detonation combustors
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Fluids"
DOI: 10.1063/5.0187773
Abstract: An investigation of the evolution process and propulsion performance of the longitudinal pulsed detonation (LPD) is conducted by numerical method in this study. Four computational models, model A–D, of different sizes are applied. A typical… read more here.
Keywords: detonation; process; propulsion performance; evolution process ... See more keywords
Propulsion performance of a flapping foil near free surfaces: Effects of submergence depth, Strouhal number, and pitching amplitude
Sign Up to like & getrecommendations! Published in 2025 at "Physics of Fluids"
DOI: 10.1063/5.0251644
Abstract: We numerically investigate the propulsion performance of a flapping foil operating near a free surface, focusing on the effects of submergence depth, Strouhal number, pitching amplitude, and surface features. A two-dimensional flapping foil of a… read more here.
Keywords: flapping foil; propulsion performance; submergence; foil ... See more keywords
Propulsion of a three-sphere microrobot in a porous medium.
Sign Up to like & getrecommendations! Published in 2024 at "Physical review. E"
DOI: 10.1103/physreve.109.065106
Abstract: Microorganisms and synthetic microswimmers often encounter complex environments consisting of networks of obstacles embedded into viscous fluids. Such settings include biological media, such as mucus with filamentous networks, as well as environmental scenarios, including wet… read more here.
Keywords: propulsion; propulsion performance; porous media; porous medium ... See more keywords
Propulsion Performance of the Full-Active Flapping Foil in Time-Varying Freestream
Sign Up to like & getrecommendations! Published in 2020 at "Applied Sciences"
DOI: 10.3390/app10186226
Abstract: A numerical investigation of the propulsion performance and hydrodynamic characters of the full-active flapping foil under time-varying freestream is conducted. The finite volume method is used to calculate the unsteady Reynolds averaged Navier–Stokes by commercial… read more here.
Keywords: time varying; propulsion performance; time; flapping foil ... See more keywords