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JOURNALS // Zapiski Nauchnykh Seminarov POMI // Archive

Zap. Nauchn. Sem. POMI, 2013 Volume 410, Pages 131–167 (Mi znsl5627)

This article is cited in 12 papers

Solvability of a free boundary problem of magnetohydrodynamics in an infinite time interval

V. A. Solonnikova, E. V. Frolovabc

a Steklov Institute of Mathematics at St. Petersburg, Fontanka 27, 191023 St. Peterburg, Russia
b St. Petersburg State Electrotechnical University, prof. Popova 5, 191126 St. Peterburg, Russia
c St. Petersburg State University, Department of Mathematics and Mechanics

Abstract: We prove global in time solvability of a free boundary problem governing the motion of a finite isolated mass of a viscous incompressible electrically conducting capillary liquid in vacuum, under the smallness assumptions on initial data. We assume that initial position of a free boundary is close to a sphere. We show that if $t\to\infty$, then the solution tends to zero exponentially and the free boundary tends to a sphere of the same radius, but, in general, the sphere may have a different center. The solution is obtained in Sobolev–Slobodetskii spaces $W_2^{2+l,1+l/2}$, $1/2<l<1$.

Key words and phrases: magnetohydrodynamics, free boundary, global solvability, Sobolev spaces.

UDC: 517

Received: 17.12.2012

Language: English


 English version:
Journal of Mathematical Sciences (New York), 2013, 195:1, 76–97

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© Steklov Math. Inst. of RAS, 2025