Study on Electrohydrodynamic Capillary Instability of Viscoelastic Fluids in Presence of Axial Electric Field

Tiwari, D. K.; Awasthi, Mukesh Kumar; Agrawal, G.S.

doi:10.1142/s1758825112500275

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…21 The interface of viscous-viscoelastic fluid was analyzed by Funada and Joseph 22 for Oldroyd B fluid. Awasthi and his coauthors [23][24][25] examined cylindrical interfaces with electromagnetic effects. The instability of an interface involving Walter's B fluid was analyzed by Moatimid et al [26][27] Dharamendra and Awasthi 28 studied the stability in cylindrical configuration for Walter's B fluid.…”

Section: Introductionmentioning

confidence: 99%

Stability characteristics of Walter’s B viscoelastic fluid in a cylindrical configuration with heat transfer

Awasthi

Dharamendra

Yadav

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The stability characteristics of the viscous fluid–viscoelastic fluid interface are investigated in a region confined by two rigid cylindrical surfaces. Walter’s B viscoelastic fluid is taken for the analysis and the fluid phases are transferring heat along with mass from one phase to the other. The gravitational acceleration effect is neglected and therefore, the interface is unstable due to surface tension. Using the linear stability analysis, the implicit expression for the critical wave number is derived analytically in terms of associated physical parameters and solved through the Newton–Raphson method. The various plots are made in terms of perturbations growth rate and critical wave number showing the behavior of flow variables. It is found that the instability of the interface decreases if the transfer of heat is increased. Walter’s B viscoelastic fluid interface is more unstable than the equivalent Newtonian fluid interface. The density of Walter’s B fluid resists the perturbation’s growth while viscoelasticity has an inverse effect.

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Section: Introductionmentioning

confidence: 99%

Stability characteristics of Walter’s B viscoelastic fluid in a cylindrical configuration with heat transfer

Awasthi

Dharamendra

Yadav

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Effects of a radial electric field on the thinning of a slightly viscoelastic liquid jet

Yin

2017

Microfluid Nanofluid

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One-dimensional nonlinear instability study of a slightly viscoelastic, perfectly conducting liquid jet under a radial electric field

Yin

2016

Physics of Fluids

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A one-dimensional electrified viscoelastic model is built to study the nonlinear behavior of a slightly viscoelastic, perfectly conducting liquid jet under a radial electric field. The equations are solved numerically using an implicit finite difference scheme together with a boundary element method. The electrified viscoelastic jet is found to evolve into a beads-on-string structure in the presence of the radial electric field. Although the radial electric field greatly enhances the linear instability of the jet, its influence on the decay of the filament thickness is limited during the nonlinear evolution of the jet. On the other hand, the radial electric field induces axial non-uniformity of the first normal stress difference within the filament. The first normal stress difference in the center region of the filament may be greatly decreased by the radial electric field. The regions with/without satellite droplets are illuminated on the χ (the electrical Bond number)-k (the dimensionless wave number) plane. Satellite droplets may be formed for larger wave numbers at larger radial electric fields.

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Study on Electrohydrodynamic Capillary Instability of Viscoelastic Fluids in Presence of Axial Electric Field

Cited by 5 publications

References 24 publications

Stability characteristics of Walter’s B viscoelastic fluid in a cylindrical configuration with heat transfer

Stability characteristics of Walter’s B viscoelastic fluid in a cylindrical configuration with heat transfer

Effects of a radial electric field on the thinning of a slightly viscoelastic liquid jet

One-dimensional nonlinear instability study of a slightly viscoelastic, perfectly conducting liquid jet under a radial electric field

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