Title: Evaporation Modeling of Water Droplets in a Transonic Compressor Cascade under Fogging Conditions
Authors: Seck, Adrian
Geist, Silvio
Harbeck, Janneck Christoph
Weigand, Bernhard
Joos, Franz
Language: eng
Keywords: Direct Numerical Simulation;Evaporation;Turbomachinery;Experiment
Issue Date: Feb-2020
Publisher: MDPI
Document Type: Article
Project: Grundlegende Untersuchung der dreidimensionalen Zweiphasenströmung durch ein Verdichtergitter 
Journal / Series / Working Paper (HSU): International Journal of Turbomachinery Propulsion and Power
Volume: 5
Issue: 1
Publisher Place: Basel
Conference: 13th European Turbomachinery Fluid Dynamics and Thermodynamics 2019
High-fogging is widely used to rapidly increase the power outputs of stationary gas turbines. Therefore, water droplets are injected into the inflow air, and a considerable number enter the compressor. Within this paper, the primary process of droplet evaporation is investigated closely. A short discussion about the influential parameters ascribes a major significance to the slip velocity between ambient gas flow and droplets. Hence, experimental results from a transonic compressor cascade are shown to evaluate the conditions in real high-fogging applications. The measured parameter range is used for direct numerical simulations to extract evaporation rates depending on inflow conditions and relative humidity of the air flow. Finally, an applicable correlation for the Sherwood number in the form of Sh(Re^(1/2),Sc^(1/3)) is suggested
Organization Units (connected with the publication): Strömungsmaschinen in der Energietechnik 
Publisher DOI: 10.3390/ijtpp5010005
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