Original title: Slabé řešení matematických modelů pro interakci mezi tekutinami, pevnými látky a elektromagnetickým polem
Translated title: Weak Solutions to Mathematical Models of the Interaction between Fluids, Solids and Electromagnetic Fields
Authors: Scherz, Jan Andreas ; Benešová, Barbora (advisor) ; Muha, Boris (referee) ; Disser, Karoline (referee)
Document type: Doctoral theses
Year: 2024
Language: eng
Abstract: Weak Solutions to Mathematical Models of the Interaction between Fluids, Solids and Electromagnetic Fields Abstract We analyze the mathematical models of two classes of physical phenomena. The first class of phe- nomena we consider is the interaction between one or more insulating rigid bodies and an electrically conducting fluid, inside of which the bodies are contained, as well as the electromagnetic fields trespass- ing both of the materials. We take into account both the cases of the fluid being incompressible and the fluid being compressible. In both cases our main result yields the existence of weak solutions to the associated system of partial differential equations, respectively. The proofs of these results are built upon hybrid discrete-continuous approximation schemes: Parts of the systems are discretized with respect to time in order to deal with the solution-dependent test functions in the induction equation. The remaining parts are treated as continuous equations on the small intervals between consecutive discrete time points, allowing us to employ techniques which do not transfer to the discretized setting. Moreover, the solution-dependent test functions in the momentum equation are handled via the use of classical penalization methods. The second class of phenomena we consider is the...
Keywords: Fluid-structure interaction|Magnetoelasticity|Magnetohydrodynamics|Minimizing movements|Navier-Stokes equations|Rothe method; Interakce tekutin a pevných látek|magneto-elasticita|magneto-hydrodynamika|minimalizujíci posuny|Navierovy-Stokesovy rovnice|Rotheho metoda

Institution: Charles University Faculties (theses) (web)
Document availability information: Available in the Charles University Digital Repository.
Original record: http://hdl.handle.net/20.500.11956/188247

Permalink: http://www.nusl.cz/ntk/nusl-541217


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Universities and colleges > Public universities > Charles University > Charles University Faculties (theses)
Academic theses (ETDs) > Doctoral theses