In lucrare se propune o abordare teoretica precum şi o metodologie de calcul a unor etanşări neconvenţionale care folosesc drept element de etanşare un inel de ferofluid. Pornind de la ecuaţiile fundamentale ale magnetohidrodinamicii se stabilesc relaţiile de calcul ale etanşării. Se trec apoi în revistă unele relaţii propuse în literatura de specialitate şi se stabileşte o metodologie de calcul a etanşărilor magnetohidrodinamice fixe sau mobile (cu mişcare de translaţie sau de rotaţie).
In the paper we propose a theoretical approach and a calculating methodology for fixed and mobile sealing achieved by utilizing ferofluids (fluids having magnetically characteristics). Starting from the fundamental equations of the magnetohydrodynamics, calculus relations of the sealing are found out. Then, the relations usually presented in the speciality literature are also presented, and a calculus methodology is established for the fixed and mobile (with translation or rotation movement) sealing.
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