The Paper presents results obtained by the simulation of particle acceleration in suspension jet nozzles. The model consists of a finite element fluid solver coupled with a lagrangian particle model. The minimal number of forces that act on the particles are considered following the proposals of Baar. The velocity and the direction of particles leaving the nozzle can be compared with experimental examinations of the cutting performance achieved with these nozzles. The qualitative correspondense between the empirical and the theoretical outcome is satisfactory, although no direct comparisons could take place. Another indication of the model reliability is the predicted nozzle wear, which is accessible by the nozzle impacts of the particles. The modelling approach gives the opportunity to improve the nozzle design in special consideration of cutting performance and lifetime.
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