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Integrální přístup k řešení neferomagnetického elektrodynamického akcelerátoru
Karban, P. ; Doležel, Ivo
The paper deals with the description of dynamic behavior of a nonferromagnetic electrodynamic launcher. Although the problem itself is not new, an innovative item is determination of eddy currents in the launched body based on the integral approach that provides more accurate results than former algorithms of computation based on the FEM or electric circuit techniques. The methodology is illustrated on an example whose results are discussed
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Vybrané procesy v tekutých kovech řízené elektromagnetickým polem a jejich počítačová simulace
Mach, M. ; Doležel, Ivo
The paper presents some important results obtained by the authors during the three-year work in the domain of electromagnetic stirring and levitation melting. From the viewpoint of mathematical modeling both processes represent coupled problems characterized by mutual interaction of two or three physical fields, together with evaluation of various force effects. The theoretical analysis is illustrated on two typical examples whose results are discussed
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Jev "zamrzlého pole" v elektricky vodivých médiích, řešený prostředky klasické elektrodynamiky
Doležel, Ivo ; Karban, P. ; Mayer, D. ; Ulrych, B.
The concept "frozen field" is often used in association with behavior of strongly electrically conductive media. Being introduced in astrophysics the phenomenon consists in drift of magnetic field by electrically well conductive medium (plasma or ionized mixture of gas and dust particles) that moves due to some primary mechanism not immediately associated with this magnetic field. This paper presents the description of the effect by means of classical electrodynamics in nonrelativistic medium and its solution in an integral formulation.
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