Results 81 to 90 of about 1,010 (251)

Numerical and Experimental Studies of Cavitation Behavior in Water-Jet Cavitation Peening Processing

open access: yesShock and Vibration, 2013
Water-jet cavitation peening (WCP) is a new technology for the surface modification of metallic materials. The cavitation behavior in this process involves complex and changeable physics phenomena, such as high speed, high pressure, multiple phases ...
H. Zhang, B. Han, X.G. Yu, D.Y. Ju
doaj   +1 more source

Experimental investigation of the entrained droplet velocities in a submerged jet injected into a stagnant water pool

open access: yes, 2017
[EN] Round turbulent air jets submerged in stagnant water have been studied experimentally in this paper. To achieve this objective a water pool with an air injector has been built and particle image velocimetry visualization techniques (PIV) have been ...
Juliá, J.E.   +5 more
core   +1 more source

Liquid Jetting‐Based Miniature Robotic Navigation in Confined Fluidic Spaces

open access: yesAdvanced Intelligent Systems, EarlyView.
We introduce a new class of liquid‐jetting‐based miniature robots (JetBots) ranging in size from mm‐to‐cm, featuring a unified approach in design, fabrication, and actuation. They demonstrate fast locomotion (30.3 cm/s), rapid steering (648.8°/s), and diverse functions, such as puncturing soft materials and unlimited cargo sampling and delivery, paving
Debasish Roy, Tianlu Wang
wiley   +1 more source

Meandering Due to Large Eddies and the Statistically Self-Similar Dynamics of Quasi-Two-Dimensional Jets

open access: yes
We investigate experimentally the structure of quasi-two-dimensional plane turbulent jets discharged vertically from a slot of width into a fluid confined between two relatively close rigid boundaries with gap .
Caulfield, C. P.   +2 more
core   +1 more source

A Soft Robotic Jellyfish with Decoupled Actuators for Agile 3D Locomotion

open access: yesAdvanced Intelligent Systems, EarlyView.
This study presents a soft robotic jellyfish featuring a functionally decoupled actuation architecture. By separating propulsion, steering, and vertical regulation into independent modules, the robot overcomes conventional coupled‐motion limitations. Utilizing a passive‐valve‐based differential drag strategy and lateral water jets, it achieves agile 3D
Zhuoheng Li   +6 more
wiley   +1 more source

Experimental study on time-frequency characteristics of self-excited pulsed jet striking force in self-absorbing annular-air fluid type

open access: yesMeitan kexue jishu
In order to quantitatively analyze the striking force of self-absorbing annular-air fluidic self-excited pulsed jet, and to improve the impact performance of downward-facing orifice submerged water jets, a high-frequency striking force test system of ...
Weiqin ZUO   +6 more
doaj   +1 more source

The effect of a parallel free surface upon a submerged shallow synthetic jet

open access: yes, 2020
The interaction of a submerged shallow synthetic jet with a parallel free surface has gathered substantial interest, owing to its relevance to the operation of marine vehicles viz. ships that move close to the water surface.
Abhay Kumar, Ashish Karn
core   +1 more source

Three-dimensional visualization of the multiphase submerged jet flow model

open access: yes, 2023
Светлана Рустамовна Кильдибаева, кандидат физико-математических наук, доцент, кафедра прикладной информатики и программирования, Стерлитамакский филиал Уфимского университета науки и технологий (г.
Kharisov, E.I.   +3 more
core   +1 more source

Cteno‐Bot: An Untethered Metachronally Swimming Robot With Magnetoactive Propulsors

open access: yesAdvanced Intelligent Systems, EarlyView.
We present Cteno‐bot, an untethered ctenophore‐inspired robot which swims using metachronally coordinated appendages. A single mechanism controls up to 216 magnetoactive propulsors via a dynamically varying magnetic field. We show that the swimming speed of the robot can be increased without a corresponding increase in power requirement, simply by ...
David J. Peterman, Margaret L. Byron
wiley   +1 more source

Cavitation Bubbles in a Starting Submerged Water Jet

open access: yes, 2001
The behavior of cavitation bubbles in a starting submerged water jet discharging from a circular nozzle is studied by a simple photography technique in a moderately low range of jet exit velocity.
Fujikawa, Shigeo   +3 more
core  

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