Results 21 to 30 of about 24,743 (266)

Viscoelastic effects on the jetting–dripping transition in co-flowing capillary jets [PDF]

open access: yesJournal of Fluid Mechanics, 2008
Linear hydrodynamics stability analysis is used to determine the influence of elasticity on the jetting–dripping transition and on the temporal stability of non-axisymmetric modes in co-flowing capillary jets. The critical Weber number for which axisymmetric perturbations undergo a transition from convective to absolute instability is calculated from ...
Montanero, J. M.   +1 more
openaire   +3 more sources

Fluidic Thrust, Propulsion, Vector Control of Supersonic Jets by Flow Entrainment and the Coanda Effect

open access: yesEnergies, 2022
Thrust, propulsion, vector control of supersonic jets has been applied to jet and rocket engines, ejectors, and other many devices. In general, there are two approaches to this type of control, namely mechanical moving systems and fluidic thrust vector ...
Toshihiko Shakouchi, Shunsuke Fukushima
doaj   +1 more source

The Flow Characteristics of Supercritical Carbon Dioxide (SC-CO2) Jet Fracturing in Limited Perforation Scenarios

open access: yesEnergies, 2020
Supercritical carbon dioxide (SC-CO2) jet fracturing is a promising alternative for shale gas fracturing instead of water. However, most studies pay more attention to the fracture generation and ignore the flow characteristic of SC-CO2 jet fracturing in ...
Can Cai   +5 more
doaj   +1 more source

Exploration of Fluidic Thrust Vectoring Control on a Dynamic Test Rig: Computational and Experimental Analysis

open access: yesEngineering Proceedings, 2023
Fluidic thrust vectoring (FTV) control is a cutting-edge method used to manipulate the motion of an unmanned air vehicle when traditional control surfaces like elevators are not available. The primary purpose of employing FTV is to make the aircraft less
Ahsan Tanveer, Sarvat Mushtaq Ahmad
doaj   +1 more source

Improvement of Laminar Lifted Flame Stability Excited by High-Frequency Acoustic Oscillation

open access: yesJournal of Thermal Science and Technology, 2009
A high-frequency (20kHz) standing wave was applied to the unburned mixture upstream of a methane-air lifted jet flame using a bolt-clamped Langevin transducer (BLT) to improve stability.
Mitsutomo HIROTA   +3 more
doaj   +1 more source

Numerical study on mean flow characteristics for a combined turbulent wall and offset jets with a parallel co-flow

open access: yesJournal of Taibah University for Science, 2022
Combined turbulent wall and offset jets with and without the presence of a parallel co-flow stream are investigated using the k-ω turbulence model. We focus on the effects of co-flow velocity on the locations of various characteristic points formed owing
Nidhal Hnaien   +5 more
doaj   +1 more source

Stability and Liftoff of a N2-in-H2 Jet Flame in a Vitiated Co-flow at Atmospheric Pressure

open access: yesEurasian Chemico-Technological Journal, 2014
The stability and liftoff characteristics of a nitrogen (N2) diluted hydrogen (H2) jet flame in a vitiated co-flow are investigated experimentally with particular attention focused on regimes where multiple stabilization mechanisms are active ...
A. A. North   +4 more
doaj   +1 more source

Numerical Investigation of Performance Enhancement of the S809 Airfoil and Phase VI Wind Turbine Blade Using Co-Flow Jet Technology

open access: yesEnergies, 2021
Making full use of wind energy can effectively alleviate the global energy shortage and environment contamination problems. Nevertheless, how to significantly improve the performance of the wind turbine airfoil and blade is a crucial issue.
Shunlei Zhang, Xudong Yang, Bifeng Song
doaj   +1 more source

Experimental design for a novel co-flow jet airfoil

open access: yesAdvances in Aerodynamics, 2023
The Co-flow Jet (CFJ) technology holds significant promise for enhancing aerodynamic efficiency and furthering decarbonization in the evolving landscape of air transportation.
Hao Jiang, Weigang Yao, Min Xu
doaj   +1 more source

Review of hydrodynamics of jet flow in coastal waters

open access: yesShui kexue jinzhan, 2012
It is of great significance to study the hydrodynamic behaviors of jet flow in coastal waters,which can enrich the basic theories of jet flow for coastal dynamics and provide the design guidance for sewage disposal in coastal zones.In this paper,the ...
XU Zhen-shan   +2 more
doaj   +1 more source

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