The conditions of the appearance cavitation in the crevices of structural еlements of xial-piston hydraulic machines

Aviation technics and technology


Аuthors

Matveenko A. M.*, Chapligin V. J.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: kaf103@mai.ru

Abstract

Investigated the influence of acceleration of structural elements and the fluid viscosity on the process of emergence and development of cavitation in the crevices, theoretically derived formulas for the three cavitation criteria, two of which (by acceleration and fluid viscosity) were previously unknown. Formulas are derived which express the cavitation criteria through the critical values of the basic hydrodynamic criteria. Is presented a mathematical model of the conditions of the appearance of cavitation in the crevices of structural elements, taking into account the fluid viscosity and the accelerations of structural elements.

Keywords:

criteria of cavitation; clearances; fluid viscosity; the acceleration of structural elements.


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