MODELLING INJECTOR FLOW INCLUDING CAVITATION EFFECTS FOR DIESEL APPLICATIONS
Paper i proceeding, 2007
In this paper, cavitation and pressure parameters measured
in a model diesel injector are compared to data acquired by numerical
simulations using a new code developed for the Open-
FOAM platform, which uses a barotropic equation of state together
with the homogeneous equilibrium assumption. It is a
viscid code, allowing both compressible liquid and vapour to
be modelled. The mass flow and cavitation probabilities obtained
from the simulations are compared to data obtained in
experiments performed at AVL’s laboratories, in which the flow
through an almost two-dimensional nozzle was examined. The
experimental data used include pressure profiles and cavitation
images. The model proved to be able to predict cavitation probabilities,
mass flows, and the occurrence of super-cavitation in
the channel. In addition, it proved to be stable in its dependency
on physical parameters, and grid independent.
injection
cavitation
atomization
barotropic
diesel
spray