Linear stability analysis of a non-Newtonian liquid jet in a coaxial swirling air

2019 ◽  
Vol 91 ◽  
pp. 150-158 ◽  
Author(s):  
Xin-Tao Wang ◽  
Zhi Ning ◽  
Ming Lü ◽  
Yuan-Xu Li
Keyword(s):  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Newtonian Liquid ◽  
Liquid Jet

Linear stability analysis of a slightly viscoelastic liquid jet

2013 ◽  
Vol 28 (1) ◽  
pp. 249-256 ◽  
Author(s):  
Li-jun Yang ◽  
Yuan-yuan Qu ◽  
Qing-fei Fu ◽  
Bing-rui Xu ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Viscoelastic Liquid ◽  
Liquid Jet

scholarly journals Shear instability of an axisymmetric air–water coaxial jet

2018 ◽  
Vol 843 ◽  
pp. 575-600 ◽  
Author(s):  
Jean-Philippe Matas ◽  
Antoine Delon ◽  
Alain Cartellier
Keyword(s):  
Surface Tension ◽  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Convective Instability ◽  
Scaling Laws ◽  
Shear Instability ◽  
Liquid Jet ◽  
Absolute Instability ◽  
Instability Waves

We study the destabilization of a round liquid jet by a fast annular gas stream. We measure the frequency of the shear instability waves for several geometries and air/water velocities. We then carry out a linear stability analysis, and show that there are three competing mechanisms for the destabilization: a convective instability, an absolute instability driven by surface tension and an absolute instability driven by confinement. We compare the predictions of this analysis with experimental results, and propose scaling laws for wave frequency in each regime. We finally introduce criteria to predict the boundaries between these three regimes.

Linear Stability Analysis of a Non-Newtonian Liquid Sheet

2010 ◽  
Vol 26 (6) ◽  
pp. 1212-1225 ◽  
Author(s):  
Li-jun Yang ◽  
Yuan-yuan Qu ◽  
Qing-fei Fu ◽  
Bin Gu ◽  
Feng Wang
Keyword(s):  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Liquid Sheet ◽  
Newtonian Liquid

LINEAR STABILITY ANALYSIS OF A POWER-LAW LIQUID JET

2012 ◽  
Vol 22 (2) ◽  
pp. 123-141 ◽  
Author(s):  
Li-Jun Yang ◽  
Ming-long Du ◽  
Qing-Fei Fu ◽  
Wei Zhang
Keyword(s):  
Stability Analysis ◽  
Linear Stability ◽  
Power Law ◽  
Linear Stability Analysis ◽  
Liquid Jet

Spiralling Liquid Jets

2002 ◽  
Author(s):  
Andrew King ◽  
Stephen Decent ◽  
Iain Wallwork ◽  
Emilian Parau ◽  
Mark Simmons ◽  
...  
Keyword(s):  
Surface Tension ◽  
Stability Analysis ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Rotation Rate ◽  
Liquid Jets ◽  
Liquid Jet ◽  
Leading Order ◽  
Temporal And Spatial ◽  
Exit Speed

We examine the dynamics of a spiralling slender liquid jet which emerges from a rotating cylindrical drum. Such jets arise in the manufacture of fertiliser and magnesium pellts in the prilling process. Exploiting the slenderness of the jet we determine the steady trajectory of the jet, and find that at leading-order it is a function of the rotation rate of the drum, the surface tension and density of the liquid, the exit speed and exit radius of the jet, the radius of the cylinder, but not of the viscosity of the liquid. We carry out a linear stability analysis of the steady solution, using both inviscid and viscous perturbations, and considering both temporal and spatial stability. We compare our results to experiments, obtaining favourable agreement.

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