In recent years, overspray fogging has become a powerful means for power augmentation of industrial gas turbines (GT). Most of the studies concerning this topic focus on the problem from a thermodynamic point of view. Only a few studies, however, were undertaken to investigate the droplet behavior in the flow channel of a compressor. In this paper, results of experimental investigation of a water laden flow through a transonic compressor cascade are presented. A finely dispersed spray was used in the measurements (D10 < 10 μm). Results of the droplet behavior are shown in terms of shadowgraphy images and images of the blade surface film pattern. The angle of attack, the incoming velocity, and the water load were varied. The qualitative observations are related to laser Doppler and phase Doppler anemometer (LDA/PDA) data taken in the flow channel and at the outlet of the cascade. The data represent a base for numerical and mean line models of two-phase compressor flow.
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March 2015
Research-Article
Experimental Investigation on Droplet Behavior in a Transonic Compressor Cascade
Niklas Neupert,
Niklas Neupert
1
Mem. ASME
Laboratory of Turbomachinery,
Department of Power Engineering,
e-mail: neupert@hsu-hh.de
Laboratory of Turbomachinery,
Department of Power Engineering,
Helmut-Schmidt University
,Hamburg 22043
, Germany
e-mail: neupert@hsu-hh.de
1Corresponding author.
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Birger Ober,
Birger Ober
Laboratory of Turbomachinery,
Department of Power Engineering,
Department of Power Engineering,
Helmut-Schmidt University
,Hamburg 22043
, Germany
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Franz Joos
Franz Joos
Professor
Mem. ASME
Laboratory of Turbomachinery,
Department of Power Engineering,
e-mail: joos@hsu-hh.de
Mem. ASME
Laboratory of Turbomachinery,
Department of Power Engineering,
Helmut-Schmidt University
,Hamburg 22043
, Germany
e-mail: joos@hsu-hh.de
Search for other works by this author on:
Niklas Neupert
Mem. ASME
Laboratory of Turbomachinery,
Department of Power Engineering,
e-mail: neupert@hsu-hh.de
Laboratory of Turbomachinery,
Department of Power Engineering,
Helmut-Schmidt University
,Hamburg 22043
, Germany
e-mail: neupert@hsu-hh.de
Birger Ober
Laboratory of Turbomachinery,
Department of Power Engineering,
Department of Power Engineering,
Helmut-Schmidt University
,Hamburg 22043
, Germany
Franz Joos
Professor
Mem. ASME
Laboratory of Turbomachinery,
Department of Power Engineering,
e-mail: joos@hsu-hh.de
Mem. ASME
Laboratory of Turbomachinery,
Department of Power Engineering,
Helmut-Schmidt University
,Hamburg 22043
, Germany
e-mail: joos@hsu-hh.de
1Corresponding author.
Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received July 25, 2014; final manuscript received August 4, 2014; published online October 7, 2014. Editor: Ronald Bunker.
J. Turbomach. Mar 2015, 137(3): 031009 (8 pages)
Published Online: October 7, 2014
Article history
Received:
July 25, 2014
Revision Received:
August 4, 2014
Citation
Neupert, N., Ober, B., and Joos, F. (October 7, 2014). "Experimental Investigation on Droplet Behavior in a Transonic Compressor Cascade." ASME. J. Turbomach. March 2015; 137(3): 031009. https://doi.org/10.1115/1.4028351
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