Temat: magnetic field of the ship - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Multisource model of ship electric field
Autorzy:: Jakubiuk, K.
Zimny, P.
Wołoszyn, M.
Powiązania:: https://bibliotekanauki.pl/articles/97439.pdf
Data publikacji:: 2011
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:: magnetic field of the ship
mine protection
BEM
Opis:: A steel-hulled ship in sea water produces an electric field around itself. The source of this field are electrochemical processes and ship’s cathodic protection. The analysis of the electric field around the ship is important by the reason of the ship’s identification and counter-mine protection. The paper presents a simplified model of the ship’s multisource electric field, which allows to calculate the electric field distribution in the so-called distant zone around the ship in an approximate way using a PC, during time lasting from few up to several dozen of minutes.
Źródło:: Computer Applications in Electrical Engineering; 2011, 9; 78-84
1508-4248
Pojawia się w:: Computer Applications in Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Masking of ferromagnetic ellipsoidal shell in Earth’s magnetic field
Autorzy:: Jakubiuk, K.
Wołoszyn, M.
Zimny, P.
Powiązania:: https://bibliotekanauki.pl/articles/97594.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:: mathematical models of magnetic field
magnetization of ferromagnetic object
masking of ferromagnetic object
windings for demagnetization of the ship
Opis:: A ferromagnetic object, located in the Earth’s magnetic field, changes the distribution of that field. By measuring such disturbances it is possible to detect the object and destroy it. To conceal the object, a special winding is placed inside its ferromagnetic shell, which function is to eliminate the disturbances in the distribution of the Earth’s magnetic field. A thin walled ellipsoidal shell made of ferromagnetic material are examined as the object model. Coils are placed inside the shell and their function is to generate a magnetic field, which eliminates the effect the shell makes on the distribution of the Earth’s magnetic field in the surrounding area. Such a procedure is called magnetic masking and the winding used for this purpose is called the masking winding. The possibility of building the masking windings for the ferromagnetic ellipsoidal shell, situated in a magnetic field transverse in relation to its major axis, is also examined. Masking of a thin-walled ellipsoidal ferromagnetic object located in the longitudinal magnetic field is described in the article [1]. Investigating the possibility of masking of objects in a transverse magnetic field presented in this article will allow for a comprehensive assessment of a possibility of masking thin walled ferromagnetic objects of elongated ellipsoidal shape. The solution of Maxwell’s equations, which describe the magnetic field distribution caused by the ferromagnetic shell presence in the Earth’s magnetic field, are applied. Furthermore, the ability of selecting coils, which fully eliminate the perturbations of the magnetic field outside the shell are proven.
Źródło:: Computer Applications in Electrical Engineering; 2013, 11; 92-99
1508-4248
Pojawia się w:: Computer Applications in Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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