The present study investigates the response of recent primary breakup models in the presence of an oscillating air flow and compares them to an experiment realized by Müller (2015, “Experimentelle Untersuchung des Zerstäubungsverhaltens Luftgestützter Brennstoffdüsen bei Oszillierenden Strömungen,” Ph.D. thesis, Karlsruhe Institute of Technology, Karlsruhe, Germany). The experiment showed that the oscillating flow field has a significant influence on the Sauter mean diameter (SMD) up to a given frequency. This observation highlights the low-pass filter character of the prefilming airblast atomization phenomenon, which also introduces a significant phase shift on the dynamics of SMD of the generated spray. The models are tested in their original formulations without any calibration in order to assess their robustness versus different experiments in terms of SMD and time-response to an oscillating flow field. Special emphasis is put to identify the advantages and weaknesses of theses models, in order to facilitate their future implementation in computational fluid dynamics (CFD) codes. It is observed that some models need an additional calibration of the time constant in order to match the time shift observed in the experiment, whereas some others show a good agreement with the experiment without any modification. Finally, it is demonstrated that the low-pass filter character of the breakup phenomenon can be retrieved by considering the history of the local gas velocity, instead of the instantaneous velocity. This might result in a higher simulation fidelity within CFD codes.
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December 2017
Research-Article
Time-Response of Recent Prefilming Airblast Atomization Models in an Oscillating Air Flow Field
G. Chaussonnet,
G. Chaussonnet
Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: geoffroy.chaussonnet@kit.edu
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: geoffroy.chaussonnet@kit.edu
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A. Müller,
A. Müller
Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
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S. Holz,
S. Holz
Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
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R. Koch,
R. Koch
Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
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H.-J. Bauer
H.-J. Bauer
Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
Search for other works by this author on:
G. Chaussonnet
Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: geoffroy.chaussonnet@kit.edu
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: geoffroy.chaussonnet@kit.edu
A. Müller
Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
S. Holz
Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
R. Koch
Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
H.-J. Bauer
Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
1Present address: JENOPTIK Robot GmbH, Monheim am Rhein, Germany.
Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 5, 2017; final manuscript received July 7, 2017; published online August 16, 2017. Editor: David Wisler.
J. Eng. Gas Turbines Power. Dec 2017, 139(12): 121501 (9 pages)
Published Online: August 16, 2017
Article history
Received:
July 5, 2017
Revised:
July 7, 2017
Citation
Chaussonnet, G., Müller, A., Holz, S., Koch, R., and Bauer, H. (August 16, 2017). "Time-Response of Recent Prefilming Airblast Atomization Models in an Oscillating Air Flow Field." ASME. J. Eng. Gas Turbines Power. December 2017; 139(12): 121501. https://doi.org/10.1115/1.4037325
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