Evaporation Modeling of Water Droplets in a Transonic Compressor Cascade under Fogging Conditions
Publication date
2020-02
Document type
Research article
Author
Seck, Adrian
Geist, Silvio
Harbeck, Janneck Christoph
Weigand, Bernhard
Joos, Franz
Organisational unit
Conference
13th European Turbomachinery Fluid Dynamics and Thermodynamics 2019
Publisher
MDPI
Series or journal
International Journal of Turbomachinery Propulsion and Power
Periodical volume
5
Periodical issue
1
Part of the university bibliography
✅
Language
English
Keyword
Direct Numerical Simulation
Evaporation
Turbomachinery
Experiment
Abstract
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
Version
Not applicable (or unknown)
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Metadata only access