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Comparison of the Primary Atomization Model PAMELA with Drop Size Distributions of an Industrial Prefilming Airblast

Comparison of the Primary Atomization Model PAMELA with Drop Size Distributions of an Industrial Prefilming Airblast
Tagung:

ILASS - Europe 2016, 27th Annual Conference on Liquid Atomization and Spray Systems 

Tagungsort:

Brighton, UK

Datum:

04.09.2016 - 07.09.2016

Autoren:

Holz, Simon
Chaussonnet, Geoffroy
Gepperth, Sebastian
Koch, Rainer
Bauer, Hans-Jörg 

The spray of an annular prefilmling airblast nozzle was investigated at ambient conditions with the shadowgraphy technique. The measured volume probability densities of the droplets and Sauter mean diameters confirm the trends of previous investigations performed at planar prefilmers, where the gas velocity was found to have much stronger effect on the atomization process compared to the film flow rate. Furthermore, the experimental results were compared to the Primary Atomization Model for prEfilming airBLast injectors (PAMELA) in terms of drop size distribution and Sauter Mean Diameter (SMD). It was observed that the PAMELA model is capable to predict the SMD of an annular prefilming airblast nozzle adequately, without further adjustment of the constants derived from previous experimental investigations at planar geometries.