Results 71 to 80 of about 1,633 (176)

Triple Diffusive Convection in a Fluid Layer Under an A.C Electric Field

Advances in Mathematical Physics, Volume 2025, Issue 1, 2025.
The effect of an imposed alternating current (A.C) electric field on the onset of convective instability in a horizontal triply diffusive fluid layer is investigated. Analytical solutions are obtained for steady and oscillatory onset when imposed gradients of the stratifying agencies are constant and vertical.
Sureshkumar S., Krishna B. Chavaraddi, Priya M. Gouder, G. K. Ramesh, J. K. Madhukesh, Umair Khan, Anuar Ishak, Syed Modassir Hussain, S. A. Edalatpanah   +8 more
wiley   +1 more source

Mathematical Modeling of the Influence of Electrical Heterogeneity on the Processes of Salt Ion Transfer in Membrane Systems with Axial Symmetry Taking into Account Electroconvection

Inventions
This article proposes a 3D mathematical model of the influence of electrical heterogeneity of the ion exchange membrane surface on the processes of salt ion transfer in membrane systems with axial symmetry; in particular, we investigate an annular ...
Ekaterina Kazakovtseva, Evgenia Kirillova, Anna Kovalenko, Mahamet Urtenov   +3 more
doaj   +1 more source

Electrically driven convection in a thin annular film undergoing circular Couette flow

, 2000
We investigate the linear stability of a thin, suspended, annular film of conducting fluid with a voltage difference applied between its inner and outer edges. For a sufficiently large voltage, such a film is unstable to radially-driven electroconvection
Agrait N., Avsec D., Stephen W. Morris, V. B. Deyirmenjian, Zahir A. Daya   +4 more
core   +1 more source

Distribution of Injected Power Fluctuations in Electroconvection [PDF]

Physical Review Letters, 2003
We report on the distribution spectra of the fluctations in the amount of power injected into a liquid crystal undergoing electroconvective flow. The probability distribution functions (PDFs) of the fluctuations as well as the magnitude of the fluctuations have been determined in a wide range of imposed stress both for `unconfined' and `confined' flow ...
Tóth-Katona, Tibor, Gleeson, James T.
openaire   +3 more sources

Weakly Nonlinear Analysis of Electroconvection in a Suspended Fluid Film

, 1997
It has been experimentally observed that weakly conducting suspended films of smectic liquid crystals undergo electroconvection when subjected to a large enough potential difference.
I. Stakgold, L. Kramer, M. C. Cross, M. C. Cross, M. C. Cross, P. Manneville, S. Chandrasekhar, S. Faetti, S. Ried, S. S. Mao, S. W. Morris, S. W. Morris, Stephen W. Morris, V. B. Deyirmenjian, W. H. Press, Z. A. Daya, Zahir A. Daya   +16 more
core   +2 more sources

Nonstandard electroconvection in a bent-core oxadiazole material [PDF]

, 2011
Electroconvection (EC) phenomena have been investigated in the nematic phase of a bent-core oxadiazole material with negative dielectric anisotropy and a frequency dependent conductivity anisotropy. The formation of longitudinal roll (LR) patterns is one
Belaissaoui, A., Gleeson, H. F., Goertz, V., Goodby, J. W., Kaur, S.   +4 more
core   +1 more source

Surfactant-Switched Positive/Negative Electrorheological Effect in Tungsten Oxide Suspensions

Molecules, 2019
The electrorheological (ER) effect was experimentally observed in dielectric suspensions containing tungsten oxide (WO3) modified with surfactant molecules (sodium dodecyl sulfate (SDS) and dodecylamine (DDA)) in electric fields up to several kilovolts ...
Alexander V. Agafonov, Anton S. Kraev, Tatiana V. Kusova, Olga L. Evdokimova, Olga S. Ivanova, Alexander E. Baranchikov, Taisiya O. Shekunova, Sergey A. Kozyukhin   +7 more
doaj   +1 more source

Manipulating crystallographic growth orientation by cation‐enhanced gel‐polymer electrolytes toward reversible low‐temperature zinc‐ion batteries

InfoMat, Volume 6, Issue 11, November 2024.
This study introduces a new bimetallic cation‐enhanced gel‐polymer electrolyte (Ni/Zn‐GPE) to address the problem of restricted ionic conductivity in subzero temperatures and dendrite formation with side reactions in zinc‐ion batteries, and demonstrates the introduction of Ni2+ can confine the orientated nucleation and growth of Zn (002) crystal plane.
Yanlu Mu, Fulu Chu, Baolei Wang, Taizhong Huang, Zhanyu Ding, Delong Ma, Feng Liu, Hong Liu, Haiqing Wang   +8 more
wiley   +1 more source

The Effect of Bulk Modification of the MF-4SK Membrane with Phosphorylated Hyper-Branched Dendrimer Bolthorn H20 on the Mechanisms of Electroconvection/Dissociation of Water and Specific Selectivity to Divalent Ions

Electrochem
This study focuses on the modification of ion-exchange membranes by incorporating a phosphorylated dendrimer into sulfonated polytetrafluoroethylene membranes to enhance the specific selectivity between mono-/divalent ions, using the Ca2+/Na+ pair as an ...
Aslan Achoh, Denis Bondarev, Elena Nosova, Stanislav Melnikov   +3 more
doaj   +1 more source

Mass Transfer Phenomena during Electrodialysis of Multivalent Ions: Chemical Equilibria and Overlimiting Currents

Applied Sciences, 2018
Electrodialysis is utilized for the deionization of saline streams, usually formed by strong electrolytes. Recently, interest in new applications involving the transport of weak electrolytes through ion-exchange membranes has increased. Clear examples of
Manuel César Martí-Calatayud, Montserrat García-Gabaldón, Valentín Pérez-Herranz   +2 more
doaj   +1 more source