The structure of near-wall re-entrant flow and its influence on cloud cavitation instability.

ABSTRACT:

Abstract

The so-called 're-entrant jet' is fundamental to periodic cloud shedding in partial cavitation. However, the exact physical mechanism governing this phenomenon remains ambiguous. The complicated topology of the re-entrant flow renders whole-field, detailed measurement of the re-entrant flow cumbersome. Hence, most studies in the past have derived a physical understanding of this phenomenon from qualitative analyses of the re-entrant jet. Thus, quantitative studies are scarce in the literature. In this work, we present a methodology to experimentally measure the re-entrant flow below the vapour cavity in an axisymmetric venturi. The axisymmetry of the flow geometry is exploited to image tracer particles in the near-wall re-entrant flow. The main objective of employing tomog

SUBMITTER: Gawandalkar U 

PROVIDER: S-EPMC9046369 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature