Article
Complex flow patterns at the onset of annular electroconvection in a dielectric liquid subjected to an arbitrary unipolar injection
Author/s | Wu, Jiam
Pérez Izquierdo, Alberto Tomás Traoré, Philippe Vázquez González, Pedro Ángel |
Department | Universidad de Sevilla. Departamento de Física Aplicada III Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Publication Date | 2015 |
Deposit Date | 2018-07-10 |
Published in |
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Abstract | We numerically investigated the annular electroconvection that takes place in a dielectric liquid lying between two concentric cylinder electrodes. A uniform injection of arbitrary strengths either from the inner or outer ... We numerically investigated the annular electroconvection that takes place in a dielectric liquid lying between two concentric cylinder electrodes. A uniform injection of arbitrary strengths either from the inner or outer cylinder introduces free charge carriers into the system, and the resulting Coulomb force induces electroconvection. The problem is characterized by a linear instability that corresponds to the onset of flow motion. The linear stability criteria were determined from direct numerical results and by linear stability analysis, and the results obtained with the two approaches show an excellent agreement. We focused on the fully developed flow pattern in the finite amplitude regime. We observed very different flow motions that were highly dependent on the injection strength. |
Project ID. | FIS2011-25161
P10-FQM-5735 P09-FQM-4584 |
Citation | Wu, J., Pérez Izquierdo, A.T., Traoré, P. y Vázquez González, P.Á. (2015). Complex flow patterns at the onset of annular electroconvection in a dielectric liquid subjected to an arbitrary unipolar injection. IEEE Transactions on Dielectrics and Electrical Insulation, 22 (5), 2637-2645. |
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