Electrohydrodynamic Instability of a Cylindrical Interface: Effect of the Buoyancy Thermo-Capillary in Porous Media

Moatimid, Galal M.; Amer, M. F. E.; Mohamed, Mona A. A.

doi:10.1007/s12217-021-09885-5

Cited by 15 publications

(7 citation statements)

References 49 publications

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“…Overall, one says that the EF resists the atomization process. Similar results have been recently found 19 , 27 .…”

Section: Discussion and Outcomessupporting

confidence: 92%

“…This may be due to the presence of MP effect. Additionally, it was found a double role of the Ohnesorge number 19 . It is also noticed that the Ohnesorge number stands for the proportion between the viscous and ST forces, and that a fewer Ohnesorge numeral generates a slighter viscous force in relationship by the ST force.…”

Section: Discussion and Outcomesmentioning

confidence: 97%

“…Furthermore, the main and the upper cutoff wave numerals rise by the increase of the thermal Grashof number. Moatimid et al 19 found that the Rayleigh number has a destabilizing effect. It is known that the thermal Grashof number is related to both the Prandtl numeral and the Rayleigh numeral by the relation .…”

Section: Discussion and Outcomesmentioning

confidence: 99%

“…This examination is different from the previous studies; for example, Amer and Moatimid 18 studied the viscous fluid jet in an inviscid gas medium with MHT using Hsieh 5 simplification which reduces MHT in one parameter that appears only from the BCs and ignores the energy and concentration equations. Similarly, Moatimid et al 19 studied the fluid jet stability in the existence of heat transfer by only using the heat equation that depends on the MP effect and BA and using the VPF theory which considers the viscous flow only at the interface i.e., Euler equation of motion is used to obtain the solutions. The main goal of the current study is to guide readers in finding the right answers to the following questions: What is the benchmark of the stability methodology?…”

Section: Introductionmentioning

confidence: 99%

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The influence of energy and temperature distributions on EHD destabilization of an Oldroyd-B liquid jet

Moatimid,

Amer

2023

Sci Rep

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This work examines the impact of an unchanged longitudinal electric field and the ambient gas on the EHD instability of an Oldroyd-B fluid in a vertical cylinder, where the system is immersed in permeable media. In order to explore the possible subject uses in thermo-fluid systems, numerous experimental and theoretical types of research on the subject are conducted. The main factors influencing the dispersion and stability configurations are represented by the energy and concentration equations. The linear Boussinesq approximating framework is recommended for further convenience. A huge growth in numerous physical and technical implications is what motivated this study. Using the standard normal modes of examination, the characteristics of velocity fields, temperature, and concentration are analyzed. The conventional stability results in a non-dimensional convoluted transcendental dispersion connection between the non-dimensional growth rate and all other physical parameters. The Maranogoni phenomenon, in which temperature and concentration distributions affect surface tension, has been addressed. It is observed that the intense electric field, the Prandtl numeral, the Lewis numeral, and the Lewis numeral velocity ratio have a stabilizing influence. As opposed to the Weber numeral, the Ohnesorge numeral, and the density ratio have a destabilizing influence.

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“…Overall, one says that the EF resists the atomization process. Similar results have been recently found 19 , 27 .…”

Section: Discussion and Outcomessupporting

confidence: 92%

Section: Discussion and Outcomesmentioning

confidence: 97%

Section: Discussion and Outcomesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The influence of energy and temperature distributions on EHD destabilization of an Oldroyd-B liquid jet

Moatimid,

Amer

2023

Sci Rep

Self Cite

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“…The experimental investigation of instability between two fluids in the horizontal layer was done by Kostarev and Torokhova. 27 Moatimid et al 28 studied the stability of a cylindrical interface of two viscous, incompressible, and homogeneous fluids. In their analysis, they have included the heat transport effect and fluids flowing through porous media affected by an axial electric field.…”

Section: Introductionmentioning

confidence: 99%

Stability analysis of water-alumina nanofluid film at the spherical interface

Agarwal

Awasthi

Shukla

2023

Proceedings of the Institution of Mechanical Engineers, Part E:

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The interface of a viscous fluid and [Formula: see text]-water nanofluid is analyzed through linear instability analysis in a spherical configuration. The viscous fluid lies inside the sphere while the outside region contains nanofluid. In this model, the viscosity of the nanofluid is considered a function of the base fluid viscosity, nanoparticles volume fraction, fractal aggregates, and nanoparticles shape. The perturbed flow is taken as irrotational, and the linear perturbation equations are solved through viscous irrotational theory. The perturbations growth rate can be computed through a 2-degree polynomial and the coefficients of this polynomial are the functions of the Atwood number, Richardson number, Weber number, Reynolds number, etc. The nanofluid interface is found more stable than the viscous fluid interface. The density of nanofluids raises the amplitude of disturbances while the nanofluid's viscosity has a reverse effect.

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Nonlinear Kelvin-Helmholtz instability of a horizontal interface separating two electrified Walters' B liquids: A new approach

Moatimid

Mohamed

Elagamy

2023

Chinese Journal of Physics

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Electrohydrodynamic Instability of a Cylindrical Interface: Effect of the Buoyancy Thermo-Capillary in Porous Media

Cited by 15 publications

References 49 publications

The influence of energy and temperature distributions on EHD destabilization of an Oldroyd-B liquid jet

The influence of energy and temperature distributions on EHD destabilization of an Oldroyd-B liquid jet

Stability analysis of water-alumina nanofluid film at the spherical interface

Nonlinear Kelvin-Helmholtz instability of a horizontal interface separating two electrified Walters' B liquids: A new approach

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