Cavitation of a Liquid Column when Its Lower Boundary Moves

 
PIIS086956520003129-4-1
DOI10.31857/S086956520003129-4
Publication type Article
Status Published
Authors
Affiliation: Mechanical Engineering Research Institute, RAS
Address: Russian Federation,
Affiliation:
Mechanical Engineering Research Institute of the Russian Academy of Sciences, Moscow
Bashkir State University, Ufa
Mavlyutov Institute of Mechanics, Ufa Investigation Center, R.A.S., Ufa
Address: Russian Federation
Journal nameDoklady Akademii nauk
EditionVolume 482 Issue 1
Pages28-32
Abstract

The paper considers the movement of a fluid column caused by a piston that travels along the vertical pipe in contact with its lower boundary. The law is formulated for the piston displacement judging from experimental data. The acceleration of the piston exceeds the acceleration due to gravity. Flow separation from the piston and a change in the volume of cavitation voids are assumed to occur. The simplest model is put forward for the phenomenon. The paper presents a qualitative analytical solution to the one-dimensional problem, numerical simulation and comparison with the experimental evidence.

Keywordsfluid column, stroke, cavitation, collapse
Received04.11.2018
Publication date04.11.2018
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