Results 71 to 80 of about 1,643 (178)

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

Charge injection enhanced natural convection heat transfer in horizontal concentric annuli filled with a dielectric liquid [PDF]

, 2016
The natural convection heat transfer in a highly insulating liquid contained between two horizontal concentric cylinders is shown by two-dimensional numerical simulations to be noticeably enhanced by imposing a direct current electric field.
Pérez Izquierdo, Alberto Tomás, Traoré, Philippe, Vázquez González, Pedro Ángel, Wu, Jiam, Zhang, Mengqi   +4 more
core   +2 more sources

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

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

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

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

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

Treatment of Cyanide-Free Wastewater from Brass Electrodeposition with EDTA by Electrodialysis: Evaluation of Underlimiting and Overlimiting Operations

Membranes, 2020
Growing environmental concerns have led to the development of cleaner processes, such as the substitution of cyanide in electroplating industries and changes in the treatment of wastewaters.
Kayo Santana Barros, Tatiana Scarazzato, Valentín Pérez-Herranz, Denise Crocce Romano Espinosa   +3 more
doaj   +1 more source

Impact of noise on domain growth in electroconvection [PDF]

, 2005
The growth and ordering of striped domains has recently received renewed attention due in part to experimental studies in diblock copolymers and electroconvection.
E. Bodenschatz, I. Rehberg, Mary Griffith, Michael Dennin, P. G. de Gennes, T. Taneike   +5 more
core   +1 more source