Results 31 to 40 of about 11,968 (257)
International Journal of Naval Architecture and Ocean Engineering, 2023 In this study, the proportional, integral, and differential control constants for a self-propulsion point search were investigated using free running Computational Fluid Dynamics (CFD) simulations. The experimental data obtained using a 1/100 scale model
ChangSeop Kwon +5 more
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Zhongguo Jianchuan Yanjiu, 2018 [Objectives] In order to numerically predict the self-propulsion factors of high speed underwater vehicles equipped with Contra-Rotating Propellers (CRP),[Methods] RANS modeling approaches are developed for vehicle resistance,self-propulsion and CRP open-
HUANG Yongsheng +2 more
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Phoretic self-propulsion at large Péclet numbers [PDF]
Journal of Fluid Mechanics, 2015 We analyse the self-diffusiophoresis of a spherical particle animated by a non-uniform chemical reaction at its boundary. We consider two models of solute absorption, one with a specified distribution of interfacial solute flux and one where this flux is governed by first-order kinetics with a specified distribution of rate constant.
Yariv, Ehud, Michelin, Sébastien
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An Investigation of Bilateral Symmetry during Manual Wheelchair Propulsion
Frontiers in Bioengineering and Biotechnology, 2015 Studies of manual wheelchair propulsion often assume bilateral symmetry to simplify data collection, processing and analysis. However, the validity of this assumption is unclear.
Shelby L. Soltau +4 more
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Quantum vacuum self-propulsion and torque [PDF]
International Journal of Modern Physics AThis paper summarizes our recent efforts to understand spontaneous quantum vacuum forces and torques, which require that a stationary object be out of thermal equilibrium with the blackbody background radiation. We proceed by a systematic expansion in powers of the electric susceptibility.
Kimball A. Milton +2 more
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Self‐Propulsion by Directed Explosive Emulsification [PDF]
Advanced MaterialsAbstractAn active droplet system, programmed to repeatedly move autonomously at a specific velocity in a well‐defined direction, is demonstrated. Coulombic energy is stored in oversaturated interfacial assemblies of charged nanoparticle‐surfactants by an applied DC electric field and can be released on demand.
Xuefei Wu +10 more
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Self-propulsion of an active polar drop [PDF]
The Journal of Chemical Physics, 2019 We investigate the self-propulsive motion of a drop containing an active polar field. The drop demonstrates spontaneous symmetry breaking from a uniform orientational order into a splay or bend instability depending on the types of active stress, namely, contractile or extensile, respectively.
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Self-Propulsion of Chemically Active Droplets
Annual Review of Fluid Mechanics, 2023 Microscopic active droplets are able to swim autonomously in viscous flows. This puzzling feature stems from solute exchanges with the surrounding fluid via surface reactions or their spontaneous solubilization and from the interfacial flows resulting from these solutes’ gradients.
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International Journal of Naval Architecture and Ocean EngineeringThis study evaluated the self-propulsion performance of the K-Supramax (66,000 DWT) bulk carrier in calm water and regular wave conditions at the design speed (14.5 knots) and 4.0 knots. Using the virtual disk method in Computational Fluid Dynamics (CFD)
Myeong-Min Kim +4 more
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NUMERICAL PREDICTION OF SCALE EFFECTS ON THE PROPULSION PERFORMANCE OF JOUBERT BB2 SUBMARINE
Brodogradnja, 2022 The motivation of this study is to present the scale effects on the propulsion performance of Joubert BB2 submarine with MARIN7371R propeller. Joubert BB2 submarine was designed as a realistic attack submarine to be used in benchmarking studies ...
Ali Dogrul
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