| Validation of An Enhanced Liquid Sheet Atomisation Model Against Quantitative Laser Diagnostic Measurements |
| ILASS-Europe 2002, Zaragoza, Spain, September 9-11, 2002 |
| Authors: |
| C. A. Chryssakis, K. D. Driscoll, V. Sick, D. N. Assanis |
| Abstract: |
An
enhanced modelling approach for predicting the characteristics
of high-pressure swirl sprays commonly used in commercial DISI
applications has been developed by extending the physics of the
earlier proposed Lin- ear Instability Sheet Atomisation model
(LISA). The new spray model incorporates the effect of spray swirl
by preserving the angular velocity component of droplets, which
are injected in a circle, and also includes a transi- tion between
the initial solid cone pre-spray and the ensuing hollow cone spray.
Laser-induced fluorescence, Mie scattering and Particle Image
Velocimetry were used to image a high-pressure fuel swirl spray
at room tempera- ture and pressure and results were compared against
modelling predictions in order to evaluate the code.s ability
to capture the resulting atomisation and mixing phenomena. Measured
data include spray tip penetration, simul- taneous spray and air
entrainment velocities in a plane through the spray.s axis, and
two-dimensional droplet size distributions. Both visual and quantitative
comparisons were made to assess the predictive capabilities of
the model. |
| Paper: P2002_02.PDF |
Copyright
2008
University of Michigan