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We study a liquid jet that breaks up into drops in an external co-flowing liquid inside a confining microfluidic geometry. The jet breakup can occur right after the nozzle in a phenomenon named dripping or through the generation of a liquid…

Fluid Dynamics · Physics 2015-05-20 María Luisa Cordero , François Gallaire , Charles N. Baroud

We investigate the dynamics of a gas jet impinging on a thin liquid film. This configuration is relevant to the jet-wiping process and is unstable. In particular, we complement previous works that focused on the wiping of liquids with low…

Fluid Dynamics · Physics 2024-11-20 David Barreiro-Villaverde , Anne Gosset , Marcos Lema , Miguel A. Mendez

A stationary viscous jet falling from an oriented nozzle onto a moving surface is studied, both theoretically and experimentally. We distinguish three flow regimes and classify them by the convexity of the jet shape (concave, vertical and…

Fluid Dynamics · Physics 2008-11-18 A. Hlod , A. C. T. Aarts , A. A. F. van de Ven , M. A. Peletier

This experimental study investigates the effects of viscosity contrast between a saltwater jet and its high-viscosity propylene glycol surroundings. Using density-matched fluids in a gravity-driven flow, Jet Reynolds numbers (Re) from 1600…

Fluid Dynamics · Physics 2024-01-01 Vinod Srinivasan , Xijun Tan , Emmet Whitely , Ian Wright , Akash Dhotre , Jinwei Yang

This paper investigates the electron dynamics in three distinct discharge modes of a cross-field atmospheric pressure plasma jet, the COST-Jet. Thereby, the discharge modes are the non-neutral, the quasi-neutral, and the constricted mode.…

We describe a new numerical 3D relativistic hydrodynamical code, the results of validation tests, and a comparison with earlier, 2D studies. The 3D code has been used to study the deflection and precession of relativistic flows. We find…

Astrophysics · Physics 2009-11-07 Philip A. Hughes , Mark A. Miller , G. Comer Duncan

Bouncing jets are fascinating phenomenons occurring under certain conditions when a jet impinges on a free surface. This effect is observed when the fluid is Newtonian and the jet falls in a bath undergoing a solid motion. It occurs also…

Numerical Analysis · Mathematics 2015-09-01 Andrea Bonito , Jean-Luc Guermond , Sanghyun Lee

Experiments and numerical simulations were conducted to investigate the dispersion of turbulent jets issuing from realistic pipe geometries. The effect of jet densities and Reynolds numbers on vertical buoyant jets were investigated, as…

Fluid Dynamics · Physics 2018-11-15 Majid Soleimani Nia , Brian Maxwell , Peter Oshkai , Nedjib Djilali

The kinematic and radiative power of molecular jets is expected to change as a protostar undergoes permanent or episodal changes in the rate at which it accretes. We study here the consequences of evolving jet power on the spatial and…

Astrophysics · Physics 2009-11-07 Alexander Rosen , Michael D. Smith

The purpose of this article is to explore the role of viscoelastic properties of polymeric solutions on the jet mode in the electrospray process. In this research, several numerical simulations were performed to model the behavior of…

Fluid Dynamics · Physics 2024-03-18 Amirreza Panahi , Ahmad Reza Pishevar , Mohammad Reza Tavakoli

We analyze the flow of a planar gas jet impinging on a thin film, dragged by a vertical moving wall. In the coating industry, this configuration is known as jet wiping, a process in which impinging jets control the thickness of liquid…

Fluid Dynamics · Physics 2021-07-07 David Barreiro-Villaverde , Anne Gosset , Miguel A. Mendez

The liquid cone-jet mode can be produced upon stimulation by a co-flowing gas sheath. Most applications deal with the jet breakup, leading to either of two droplet generation regimes: jetting and dripping. The cone-jet flow pattern is…

An electrified visco-capillary jet shows different dynamic behavior, such as cone forming, breakage into droplets, whipping and coiling, depending on the considered parameter regime. The whipping instability that is of fundamental…

The study of plasma in liquid jets represents a significant area of research encompassing plasma science, dynamics, and properties. This paper presents experimental studies on plasma formation processes in liquid jets of water, ethanol, and…

Plasma Physics · Physics 2024-05-31 S. Hilal , M. Melnik , A. Ismagilov , A. Tsypkin , S. Kozlov

Fluid flows hosting electrical phenomena make the subject of a fascinating and highly interdisciplinary scientific field. In recent years, the extraordinary success of electrospinning and solution blowing technologies for the generation of…

Fluid Dynamics · Physics 2023-04-24 Marco Lauricella , Sauro Succi , Eyal Zussman , Dario Pisignano , Alexander L. Yarin

Over the last two decades, since explosive boiling has been widely used in industry, research on it has been increased. Thermal bubble jet printer, micro injectors and using in micro medicine for injection are some possible applications.…

Fluid Dynamics · Physics 2019-10-18 Farrokhs Mobadersani , Hamid Safari , Taher Hajilounezhad , Pourak Kahroba

An electrohydrodynamic numerical model is used to explore the electrospray emission behavior of both moderate and high electrical conductivity liquids under electrospray conditions. The Volume-of-Fluid method, incorporating a…

Fluid Dynamics · Physics 2022-11-30 Henry Huh , Richard E. Wirz

Breakup of a liquid jet in a high speed gaseous crossflow finds wide range of engineering and technological applications, especially in the combustors of the gas turbine engines in aerospace industry. In this study, we present…

We present 3-D numerical hydrodynamical simulations of precessing supersonic heavy jets to explore how well they serve as a model for generating molecular outflows from Young Stellar Objects. The dynamics are studied with a number of high…

Astrophysics · Physics 2019-08-15 J. A. Cliffe , Adam Frank , T. W. Jones

In this study, we systematically investigate the behaviors of viscoelastic liquid jets using an impulsive force, particularly in the high velocity and high elasticity regimes. The resulting jets are categorized into two types: (i) pinch-off…

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