Rochhausen, Stefan and Kröger, Georg and Nicke, Eberhard and Stollenwerk, Stefan (2010) Influence of a Hub-Groove on the Unsteady Losses of a Transonic Compressor Stage. STAB 2010, 09.-10.Nov.2010, Berlin, Deutschland.
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Abstract
In this paper the influence of a non-symmetrical sidewall-contour on the flow field of an axial compressor is investigated. In earlier studies, carried out at the DLR Institute of Propulsion Technology in Cologne, it has been shown that it is possible to influence secondary flow regimes by a non-symmetrical sidewall contour. With the help of the contour a vortex is generated that serves as an aerodynamic barrier and thus reduces the flow transport orthogonal to the main flow direction. In this paper the described method of flow manipulation is investigated for the compressor rotor at the hub wall. It turns out that despite the unsteady inflow conditions the vortex is stably generated and works as an aerodynamic separator. The rotor hub region increases its flow capacity. A higher pressure ratio is achieved at a highly loaded operating point. The efficiency at this point remains unchanged.
Item URL in elib: | https://elib.dlr.de/75323/ | |||||||||||||||
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Document Type: | Conference or Workshop Item (Speech, Paper) | |||||||||||||||
Title: | Influence of a Hub-Groove on the Unsteady Losses of a Transonic Compressor Stage | |||||||||||||||
Authors: |
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Date: | November 2010 | |||||||||||||||
Open Access: | Yes | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | No | |||||||||||||||
In ISI Web of Science: | No | |||||||||||||||
Status: | Published | |||||||||||||||
Keywords: | non-symmetrical sidewall contouring axial compressor rotor | |||||||||||||||
Event Title: | STAB 2010 | |||||||||||||||
Event Location: | Berlin, Deutschland | |||||||||||||||
Event Type: | national Conference | |||||||||||||||
Event Dates: | 09.-10.Nov.2010 | |||||||||||||||
HGF - Research field: | Energy | |||||||||||||||
HGF - Program: | Efficient Energy Conversion (old) | |||||||||||||||
HGF - Program Themes: | E VG - Combustion and Gas Turbine Technologies (old) | |||||||||||||||
DLR - Research area: | Energy | |||||||||||||||
DLR - Program: | E VG - Combustion and Gas Turbine Technologies | |||||||||||||||
DLR - Research theme (Project): | E - Gasturbine (old) | |||||||||||||||
Location: | Köln-Porz | |||||||||||||||
Institutes and Institutions: | Institute of Propulsion Technology > Numerical Methodes | |||||||||||||||
Deposited By: | Rochhausen, Stefan | |||||||||||||||
Deposited On: | 21 May 2012 14:33 | |||||||||||||||
Last Modified: | 31 Jul 2019 19:35 |
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