Influence of the shaft rotation on the stability of magnetic fluid shaft seal characteristics

M. S. Krakov¹ - I. V. Nikiforov²

¹ Belarussian National Technical University, 65 Independence Ave., 220027 Minsk, Belarus
² Belarussian State University, 4 Independence Ave., 220050 Minsk, Belarus

Abstract
Distribution of the magnetic particles concentration in a magnetic fluid shaft seal is studied numerically for a rotating shaft. It is revealed that the shaft rotation causes not only an azimuthal flow of the magnetic fluid, but a meridional flow as well. This meridional flow prevents the growth of magnetic particle concentration in the gap of the magnetic fluid shaft seal. As a result, the burst pressure of the magnetic fluid shaft seal for the rotating shaft is stable and does not change with time. Figs 6, Refs 7.