The Break-up Length of Laminar Cylindrical Liquid Jets. Modification of Weber's Theory

1997 ◽  
Vol 24 (1-3) ◽  
pp. 428-438 ◽  
Author(s):  
S. Leroux ◽  
Christophe Dumouchel ◽  
M. Ledoux
Keyword(s):  
Liquid Jets ◽  
Break Up

Aerodynamic effects in the break-up of liquid jets: on the first wind-induced break-up regime

2005 ◽  
Vol 541 (-1) ◽  
pp. 1 ◽  
Author(s):  
J. M. GORDILLO ◽  
M. PÉREZ-SABORID
Keyword(s):  
Liquid Jets ◽  
Break Up

scholarly journals Beating the Jetting Regime

2012 ◽  
Vol 13 (5) ◽  
Author(s):  
Alban Sauret ◽  
Ho Cheung Shum
Keyword(s):  
Flow Rate ◽  
Scaling Laws ◽  
Scaling Law ◽  
Good Control ◽  
Theoretical Modelling ◽  
Liquid Jets ◽  
Emulsion Droplets ◽  
Novel Approach ◽  
Break Up ◽  
Good Agreement

AbstractWe study numerically the dynamics of jets and drops in a microcapillary co-flow device. The co-flow stream encounters different flow regimes, including dripping, jetting. Using a level-set/finite element axysimmetric numerical simulation, we study the dynamics of breakup of a jet subject to flow rate perturbations. A scaling law for the width of the unperturbed jet is presented and compared to existing experimental results as well as numerical measurements. Then, we show that the introduction of a sinusoidal perturbation of the inner fluid flow rate can facilitate breakup of the fluid in regimes where a jet is usually observed. Moreover, the flow rate perturbation leads to a good control over the size and the frequency of the resulting droplets. Using theoretical modelling, we provide a criterion to determine the optimal frequency to break up the jet. We also derive scaling laws to determine the volume of inner fluid encapsulated in the emulsion droplets as a function of the frequency and to estimate the distance for the jet to break up as a function of the amplitude of perturbation. These scaling laws are in good agreement with results of numerical simulations. Our work suggests a novel approach and offers guiding principles to break up liquid jets in cases where dripping is difficult to achieve.

Break-up and droplet formation in shear thinning compound liquid jets

2012 ◽  
Vol 77 (1) ◽  
pp. 97-108 ◽  
Author(s):  
M. Mohsin ◽  
J. Uddin ◽  
S. P. Decent ◽  
M. J. H. Simmons
Keyword(s):  
Shear Thinning ◽  
Droplet Formation ◽  
Liquid Jets ◽  
Break Up

Break-up length of liquid jets produced by short nozzles

2018 ◽  
Vol 99 ◽  
pp. 397-407 ◽  
Author(s):  
M. Etzold ◽  
A. Deswal ◽  
L. Chen ◽  
F. Durst
Keyword(s):  
Liquid Jets ◽  
Break Up

Experimental and Theoretical Description of the Break-up of Curved Liquid Jets in the Prilling Process

2005 ◽  
Vol 83 (11) ◽  
pp. 1267-1275 ◽  
Author(s):  
L. Partridge ◽  
D.C.Y. Wong ◽  
M.J.H. Simmons ◽  
E.I. Părău ◽  
S.P. Decent
Keyword(s):  
Theoretical Description ◽  
Liquid Jets ◽  
Break Up

Thorough small-angle X-ray scattering analysis of the instability of liquid micro-jets in air

2013 ◽  
Vol 21 (1) ◽  
pp. 193-202 ◽  
Author(s):  
Benedetta Marmiroli ◽  
Fernando Cacho-Nerin ◽  
Barbara Sartori ◽  
Javier Pérez ◽  
Heinz Amenitsch
Keyword(s):  
Small Angle ◽  
Free Electron ◽  
Liquid Jets ◽  
Liquid Jet ◽  
X Rays ◽  
Free Electron Lasers ◽  
X Ray ◽  
X Ray Scattering ◽  
Break Up ◽  
Ray Scattering

Liquid jets are of interest, both for their industrial relevance and for scientific applications (more important, in particular for X-rays, after the advent of free-electron lasers that require liquid jets as sample carrier). Instability mechanisms have been described theoretically and by numerical simulation, but confirmed by few experimental techniques. In fact, these are mainly based on cameras, which is limited by the imaging resolution, and on light scattering, which is hindered by absorption, reflection, Mie scattering and multiple scattering due to complex air/liquid interfaces during jet break-up. In this communication it is demonstrated that synchrotron small-angle X-ray scattering (SAXS) can give quantitative information on liquid jet dynamics at the nanoscale, by detecting time-dependent morphology and break-up length. Jets ejected from circular tubes of different diameters (100–450 µm) and speeds (0.7–21 m s−1) have been explored to cover the Rayleigh and first wind-induced regimes. Various solvents (water, ethanol, 2-propanol) and their mixtures have been examined. The determination of the liquid jet behaviour becomes essential, as it provides background data in subsequent studies of chemical and biological reactions using SAXS or X-ray diffraction based on synchrotron radiation and free-electron lasers.

Break-up dynamics and drop size distributions created from spiralling liquid jets

2004 ◽  
Vol 30 (5) ◽  
pp. 499-520 ◽  
Author(s):  
D.C.Y. Wong ◽  
M.J.H. Simmons ◽  
S.P. Decent ◽  
E.I. Parau ◽  
A.C. King
Keyword(s):  
Drop Size ◽  
Liquid Jets ◽  
Size Distributions ◽  
Break Up ◽  
Drop Size Distributions
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