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Control of the motion of a vessel with a heavy inhomogeneous liquid. (English. Russian original) Zbl 0860.76020

Fluid Dyn. 30, No. 3, 341-350 (1995); translation from Izv. Ross. Akad. Nauk, Mekh. Zhidk. Gaza 1995, No. 3, 11-22 (1995).
The problem of controlling the internal waves inside a closed rectangular cavity filled with a heavy two-layer fluid is considered in the linear approximation. The fluid is assumed to be stably stratified, ideal, and incompressible. The controlling horizontal force is applied to the body containing the cavity. It is assumed that at the initial moment there are no oscillations of the fluid and the interface is horizontal. The problem is to bring the vessel as a whole into a prescribed state of linear motion without relative wave motion of the fluid. The Cauchy-Poisson problem and the self-consistent integro-differential equation of the vessel motion are solved using the Fourier method and taking into account the reaction of the internal waves. On the basis of an analysis of the corresponding generalized momentum problem, approaches are proposed for solving the problem of control.

MSC:

76B55 Internal waves for incompressible inviscid fluids
76V05 Reaction effects in flows
93C20 Control/observation systems governed by partial differential equations
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References:

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