Authors:
Hanna Pfannenstiel
;
Martin Ungerer
and
Ingo Sieber
Affiliation:
Institute for Automation and Applied Informatics, KIT, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
Keyword(s):
Computational Fluid Dynamics, Modelling, Simulation, Model Reduction, Additive Manufacturing, Aerosol-on-Demand.
Abstract:
In this paper, we present a method for the automated determination of aerosol jet parameters for the Aerosol-on-Demand (AoD) jet-printhead. A critical aspect in the simulation of our computational fluid dynamics (CFD) model is the simulation time due to the high model complexity in combination with a large number of individual elements. This, together with the problem of determining the focal point through measurements on our laboratory setup, leads to our approach of model reduction as the basis for an automated determination of the aerosol jet parameters, which is shown using the example of determining the focal position and focal width. Starting from a fluid dynamic model, we create a reduced model by separating the variables, with which we can predict aerosol jet parameters. The method presented here is validated by CFD simulations of an aerosol spray with a mass of individual droplets are varied according to a Rosin-Rammler distribution.