Hydrodynamic instability in ohmic regimes with imperfect electric membranes
| Autor: | E. N. Kalaydin, G. S. Ganchenko, S. Chakraborty, Evgeny A. Demekhin |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Thermodynamic equilibrium Computational Mechanics General Physics and Astronomy Thermodynamics Mechanics 01 natural sciences Instability Electromigration 010305 fluids & plasmas Vibration Membrane Two-stream instability Mechanics of Materials 0103 physical sciences Diffusion (business) 010306 general physics Ohmic contact |
| Zdroj: | Doklady Physics. 62:266-270 |
| ISSN: | 1562-6903 1028-3358 |
| DOI: | 10.1134/s1028335817050111 |
| Popis: | The transition to overlimiting currents directly from prelimiting regimes bypassing the limitingcurrent stage is considered for imperfect electric membranes. The hydrodynamic instability of the onedimensional equilibrium state, which is a result of the balance between diffusion and electromigration, is investigated. The influence of volume and surface effects on instability and the transition to overlimiting currents is estimated under variation of the membrane selectivity. It is found that the dominating mechanism of instability is destabilization of the residual space charge. The fact of the replacement of monotonic instability by vibratory instability with a vibration frequency of about 50−300 Hz has been discovered. |
| Databáze: | OpenAIRE |
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