Article
Pattern imaging of primary and secondary electrohydrodynamic instabilities
Author/s | Vega Reyes, Francisco
García García, Francisco Javier |
Department | Universidad de Sevilla. Departamento de Física Aplicada I Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Publication Date | 2006-02-08 |
Deposit Date | 2023-07-13 |
Published in |
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Abstract | A little known electrohydrodynamic instability, which we call a rose window, is observed in air/liquid interfaces in electric fields with unipolar space charge distributions. Depending on the liquid properties, the rose ... A little known electrohydrodynamic instability, which we call a rose window, is observed in air/liquid interfaces in electric fields with unipolar space charge distributions. Depending on the liquid properties, the rose window may appear from an initial rest state (primary instability) or on top of another instability, the classical unipolar-injection-induced instability, destroying its pattern (secondary instability). After imaging of the rose window, we use an edge-detection filter to find the instability threshold and study the characteristic pattern as a function of the liquid properties. Results show that the specific properties of the electric field, due to charge injection, are the cause of the rose-window and that the primary and secondary rose windows are essentially different instabilities. |
Funding agencies | Ministerio de Ciencia Y Tecnología (MCYT). España |
Project ID. | BFM-2003-01739 |
Citation | Vega Reyes, F. y García García, F.J. (2006). Pattern imaging of primary and secondary electrohydrodynamic instabilities. Journal of Fluid Mechanics, 549, 61-69. https://doi.org/10.1017/S0022112005007706. |
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