scholarly journals Nonlinear electrohydrodynamic instability through two jets of an Oldroydian viscoelastic fluids with a porous medium under the influence of electric field

AIP Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 055302 ◽  
Author(s):  
Galal M. Moatimid ◽  
Doaa R. Mostapha
Keyword(s):  
Porous Medium ◽  
Electric Field ◽  
Viscoelastic Fluids ◽  
Electrohydrodynamic Instability ◽  
Two Jets

ELECTROHYDRODYNAMIC INSTABILITY OF LIQUID SHEET SATURATING POROUS MEDIUM WITH INTERFACIAL SURFACE CHARGES

2013 ◽  
Vol 23 (2) ◽  
pp. 165-191
Author(s):  
Mohamed F. El-Sayed ◽  
M. H. M. Moussa ◽  
Ahmed A. A. Hassan ◽  
N. M. Hafez
Keyword(s):  
Porous Medium ◽  
Liquid Sheet ◽  
Surface Charges ◽  
Electrohydrodynamic Instability ◽  
Interfacial Surface

Influence of electrode types on the electrohydrodynamic instability patterning process: a comparative study

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 112300-112306 ◽  
Author(s):  
Minzhe Liu ◽  
Hefu Li ◽  
Weixing Yu ◽  
Taisheng Wang ◽  
Zhenyu Liu ◽  
...  
Keyword(s):  
Electric Field ◽  
Comparative Study ◽  
Polymer Film ◽  
Dielectric Substrate ◽  
Electrohydrodynamic Instability ◽  
Conductive Pattern ◽  
Planar Substrate

A polymer film resting on a planar substrate under the influence of a electric field. (A) A conductive patterned electrode. (B) A conductive pattern on a dielectric substrate.

Rayleigh-Taylor Instability of Newtonian and Oldroydian Viscoelastic Fluids in Porous Medium

1994 ◽  
Vol 49 (10) ◽  
pp. 927-930
Author(s):  
R. C. Sharma ◽  
V. K. Bhardwaj
Keyword(s):  
Porous Medium ◽  
Interfacial Tension ◽  
Viscoelastic Fluids ◽  
Taylor Instability ◽  
Horizontal Boundary ◽  
Wave Numbers ◽  
Unstable Configuration ◽  
Rayleigh Taylor Instability

AbstractThe Rayleigh-Taylor instability of viscous and viscoelastic (Oldroydian) fluids, separately, has been considered in porous medium. Two uniform fluids separated by a horizontal boundary and the case of exponentially varying density have been considered in both viscous and viscoelastic fluids. The effective interfacial tension succeeds in stabilizing perturbations of certain wave numbers (small wavelength perturbations) which were unstable in the absence of effective interfacial tension, for unstable configuration/stratification.

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