Instability of MHD-modified interfacial gravity waves revisited

A. Lukyanov*, G. El, S. Molokov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


We reveal the basic mechanism of instability of the two-layer conductive fluid system carrying a normal current and exposed to a uniform external magnetic field. This process is a reflection of a MHD-modified interfacial gravity wave from the boundary. Due to special boundary conditions, the reflection coefficient turns out to be greater than 1 for some directions of the wave propagation. We consider two cases: reflection of a monochromatic plane wave from the plane boundary and reflection of rotating waves in a circular geometry. We believe that the proposed mechanism gives a new understanding of the instability formation in the system 'liquid metal-electrolyte' type.

Original languageEnglish
Pages (from-to)165-172
Number of pages8
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number3-4
Early online date19 Oct 2001
Publication statusPublished - 12 Nov 2001
Externally publishedYes


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