Experimental Study Of Multiphase Flow
In A Model Gearbox
Author(s)
V. Chernoray & M. Jahanmiri
Abstract
This study concerns dynamics of a two-phase flow around a rotating solid body.
Under consideration is a model of a gear wheel in a gearbox which rotates and is
partially submerged in oil. The flow of interest is complex and involves effects
of free surface dynamics, rotation, and formation of bubbles and drops.
Occurring flow regimes include laminar, transitional and turbulent. The major
focus of the investigation is on details of the developed flow, and the purpose is
validation of numerical methods developed for design and optimization of such
components. Current experiments are performed in a test rig which is modelling
a generic simplified gearbox with a single isolated rotating wheel. The flow
measurements are carried out by using particle image velocimetry (PIV) and the
test rig is specially designed for this purpose with the optical access maximized.
The flow similarity with respect to a real gearbox is fully maintained and the
working fluid is a transparent mineral oil. The PIV measurements are performed
at four different rotation speeds for two different wheel configurations in order to
cover a spectrum of operational conditions needed for numerical modelling. The
emphasis is on the result of experiments on a smooth wheel. The measurements
are providing velocity distribution around the wheel and details on bubble and
drop distribution.
Keywords: bubble and drop dynamics, rotating wheel, splash, surface tension,
gear box, PIV measurements.
Keywords
bubble and drop dynamics, rotating wheel, splash, surface tension,
gear box, PIV measurements
Related Book
Other papers in this volume
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