Results 41 to 50 of about 4,206,932 (358)

Pressure anomalies beneath solitary waves with constant vorticity [PDF]

open access: yesarXiv, 2022
While some works have investigated the particle trajectories and stagnation points beneath solitary waves with constant vorticity, little is known about the pressure beneath such waves. To address this gap, we investigate numerically the pressure beneath solitary waves in flows with constant vorticity.
arxiv  

Drag Control by Hydrogen Injection in Shocked Stagnation Zone of Blunt Nose [PDF]

open access: yesIOP Conf. Ser.: Mater. Sci. Eng. 1024 (2021) 012110, 2020
The main motivation of the current study is to propose a high-pressure hydrogen injection as an hybrid active flow control technique in order to manipulate the flow-field in front of a blunt nose during hypersonic flight. Hydrogen injection can lead to self-igition under the right environment conditions in a stagnation zone, and may cause thermal heat ...
arxiv   +1 more source

Numerical Simulation of Nozzle Flow Field with Secondary Injection Thrust Vector Control

open access: yesMATEC Web of Conferences, 2018
Numerical simulations are performed to characterize the secondary injection thrust vector control. For this objective the following measurements were taken: considering the flow to be compressible and turbulent using Realizable k-ε turbulence model ...
Noaman H.R.   +2 more
doaj   +1 more source

Ideal hydrodynamic scaling relations for a stagnated imploding spherical plasma liner formed by an array of merging plasma jets [PDF]

open access: yesPhysics of Plasmas 20, 032706 (2013), 2013
This work presents scaling relations for the peak thermal pressure and stagnation time (over which peak pressure is sustained) for an imploding spherical plasma liner formed by an array of merging plasma jets. Results were derived from three-dimensional (3D) ideal hydrodynamic simulation results obtained using the smoothed particle hydrodynamics code ...
arxiv   +1 more source

Impinging Performance of High-Pressure Water Jets Emitting from Different Nozzle Orifice Shapes

open access: yesGeofluids, 2020
The impinging pressure of a water jet is a key factor in engineering applications, and the jet shape has a great influence on this pressure. In this paper, five different nozzle shapes were designed, and impacting tests were conducted based on a self ...
Fei Huang   +3 more
doaj   +1 more source

Single cavitation bubble dynamics in a stagnation flow [PDF]

open access: yes, 2023
Jetting of collapsing bubbles is a key aspect in cavitation-driven fluid-solid interactions as it shapes the bubble dynamics and additionally due to its direct interaction with the wall. We study experimentally and numerically the near-wall collapse and jetting of a single bubble seeded into the stagnation flow of a wall jet, i.e.
arxiv   +1 more source

Evaluation of Influencing Factors in Cleaning Performance for Bio-Fouling Removal Based on High-Pressure Water Jets

open access: yesJournal of Marine Science and Engineering
Regular inspections and hull cleanings are essential to prevent bio-fouling on ships. However, traditional cleaning methods such as brush cleaning and high-pressure water-jet cleaning at docks are ineffective in cleaning niche areas like bow thrusters ...
Jaehyeon Ahn   +6 more
doaj   +1 more source

Analytical and Numerical Study on Irradiate Ignition of Solid Combustibles in Sub-Atmospheric Pressure

open access: yesJournal of Thermal Science and Technology, 2008
The aim of the present study is to understand the basics of spontaneous ignition of irradiated solid combustibles in sub-atmospheric pressure via analytical and numerical approaches.
Yuji NAKAMURA
doaj   +1 more source

Spatiotemporal Variability of Air Stagnation and its Relation to Summertime Ozone in the Yangtze River Delta of China

open access: yesFrontiers in Environmental Science, 2021
This paper investigates the spatiotemporal variability of air stagnation in summer as well as its relation to summer ozone (O3) over the Yangtze River Delta (YRD) region of China. Air stagnation days (ASDs) in the YRD during the summers from 2001 to 2017
Min Xie   +8 more
doaj   +1 more source

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