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A Deep Insight into the Transonic Flow of an Advanced Centrifugal Compressor Design

Wittrock, David and Junker, Martin and Beversdorff, Manfred and Peters, Andreas and Nicke, Eberhard (2019) A Deep Insight into the Transonic Flow of an Advanced Centrifugal Compressor Design. In: Proceedings of the ASME Turbo Expo. Proceedings of ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, 17.-21. Jun. 2019, Phoenix, USA.

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Abstract

In the last decades major improvements in transonic centrifugal compressor design have been achieved. The further exploration of design space is enabled by recent progress in structural mechanics and manufacturing. A challenging task of inducer design especially in terms of transonic inflow conditions is to provide a wide flow range and reduced losses due to a sufficient shock control. The use of so called multidisciplinary design optimization with an extensive amount of free parameters leads finally to complex designs. DLR's latest Fast Rotating Centrifugal Compressor (SRV5) operates at a design speed of Mu2=1.72 and a total pressure ratio of 5.72. This compressor design is characterized by an S-shaped leading edge and free-form blade surfaces. Due to the complex design the key design features are difficult to explore. Therefore, non-intrusive measurements are conducted on the highly loaded SRV5. The Laser-2-Focus (L2F) approach that is used in addition with the Doppler Global Velocimetry (DGV) delivers a three dimensional velocity field. Besides the impeller inflow the ouflow is also part of the experimental and numerical verification of the advanced compressor design. Experimental results are compared with the numerical analysis of the compressor using DLR's RANS Flow Solver TRACE. The deep insight of the inflow leads to a better understanding of the operating behavior of such impeller designs.

Item URL in elib:https://elib.dlr.de/128199/
Document Type:Conference or Workshop Item (Speech)
Title:A Deep Insight into the Transonic Flow of an Advanced Centrifugal Compressor Design
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wittrock, DavidDavid.Wittrock (at) dlr.deUNSPECIFIED
Junker, MartinInstitut für Antriebstechnik, DLRUNSPECIFIED
Beversdorff, Manfredmanfred.beversdorff (at) dlr.deUNSPECIFIED
Peters, AndreasAndreas.Peters (at) dlr.deUNSPECIFIED
Nicke, Eberhardeberhard.nicke (at) dlr.deUNSPECIFIED
Date:17 June 2019
Journal or Publication Title:Proceedings of the ASME Turbo Expo
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Status:Published
Keywords:Centrifugal Compressor, Laser-2-Focus, Doppler Global Velocimetry, CFD, TRACE
Event Title:Proceedings of ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition
Event Location:Phoenix, USA
Event Type:international Conference
Event Dates:17.-21. Jun. 2019
Organizer:The American Society of Mechanical Engineers
HGF - Research field:Energy
HGF - Program:Energy Efficiency, Materials and Resources
HGF - Program Themes:Efficient and Flexible Power Plants
DLR - Research area:Energy
DLR - Program:E VS - Combustion Systems
DLR - Research theme (Project):E - Gas Turbine
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Fan and Compressor
Deposited By: Wittrock, David
Deposited On:08 Jul 2019 09:22
Last Modified:12 Aug 2019 15:26

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