Electrohydromagnetic instability of superposed fluids

✍ Scribed by Bhowmik, G. ;Talwar, S. P.

• Publisher: Springer
• Year: 1971
• Tongue: English
• Weight: 498 KB
• Volume: 24
• Category: Article
• ISSN: 0003-6994
• DOI: 10.1007/bf00411716

✦ Synopsis

The problem of stability of superposed viscous liquids subj ect simultaneously to electric and magnetic fields is investigated using the normal mode analysis. A configuration of an eleetrieally conducting liquid topped by a dielectric liquid is envisaged in a a downward gravity field. The electric Iield is assumed along the gravity iield, while the magnetic field is taken to be either along or normal to the electric fiel& Criteria of instability are derived in both cases. It is found that a vertical electric field has a destabilizing influence and renders an otherwise stable conIiguration (bottom heavy arrangement) unstable for small wavelengths, while the effeet of the magnetic field is stabilizing.