On the problem of small motions and normal oscillations of a viscous fluid in a partially filled container

Azizov, Tomas Ya. and Hardt, Volker and Kopachevsky, Nikolay D. and Mennicken, Reinhard (2003) On the problem of small motions and normal oscillations of a viscous fluid in a partially filled container. MATHEMATISCHE NACHRICHTEN, 248. pp. 3-39. ISSN 0025-584X, 1522-2616

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Abstract

The famous classical S. Krein problem of small motions and normal oscillations of a viscous fluid in a partially filled container is investigated by a new approach based on a recently developed theory of operator matrices with unbounded entries. The initial boundary value problem is reduced to a Cauchy problem dy/dt +Ay f(t), y(0) = y(0), in some Hilbert space. The operator matrix A is a maximal uniformly accretive operator which is selfadjoint in this space with respect to some indefinite metric. The theorem on strong solvability of the hydrodynamic problem is proved. Further, the spectrum of normal oscillations, basis properties of eigenfunctions and other questions are studied.

Item Type: Article
Uncontrolled Keywords: DIFFERENTIAL-OPERATORS; ESSENTIAL SPECTRUM; MIXED ORDER; MATRICES; SYSTEM; Hilbert space; evolution problem; Navier-Stokes equations; normal oscillations
Subjects: 500 Science > 510 Mathematics
Divisions: Mathematics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 05 Aug 2021 10:36
Last Modified: 05 Aug 2021 10:36
URI: https://pred.uni-regensburg.de/id/eprint/39496

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