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COMPARISON OF EXPERIMENTS, FULL-ANNULUS CALCULATIONS AND HARMONIC-BALANCE-CALCULATIONS OF A MULTI-STAGE COMPRESSOR

Reutter, Oliver and Ashcroft, Graham and Nicke, Eberhard and Kügeler, Edmund (2018) COMPARISON OF EXPERIMENTS, FULL-ANNULUS CALCULATIONS AND HARMONIC-BALANCE-CALCULATIONS OF A MULTI-STAGE COMPRESSOR. In: Proceedings of Montreal 2018 Global Power and Propulsion Forum. GPPS Montreal 18, 07.-09.Mai 2018, Montreal, Kanada. ISSN 2504-4400

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Abstract

The 4.5 stage DLR research compressor Rig250, which is representative of the front stages of a modern high pressure compressor, has been investigated experimentally and numerically. In order, to enable comparisons with the timeresolved experimental data both steady and unsteady numerical simulations have been performed. In these simulations, both time- and frequency-domain methods have been employed. For the time-domain calculations the model consisted of the full annulus mesh of the first two stages including the IGVs and struts located upstream in a swan neck. In total, the mesh has about 1x109 nodes and is distributed over 6000 blocks. For the frequency-domain calculations the Harmonic Balance (HB) method has been used. By exploiting the spatial and temporal periodicity of the configuration the HB method only requires a single passage to be resolved per blade row, thus significantly reducing the mesh size and calculation time. In this work the results of the time- and frequencydomain simulations are compared with each other and the available steady and unsteady experimental data. In particular, the importance of selecting the appropriate Fourier modes and the challenge this presents in multistage configurations is emphasized. The drawbacks and advantages of the two numerical methods are discussed.

Item URL in elib:https://elib.dlr.de/120909/
Document Type:Conference or Workshop Item (Speech)
Title:COMPARISON OF EXPERIMENTS, FULL-ANNULUS CALCULATIONS AND HARMONIC-BALANCE-CALCULATIONS OF A MULTI-STAGE COMPRESSOR
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Reutter, OliverOliver.Reutter (at) dlr.dehttps://orcid.org/0000-0002-2080-7691
Ashcroft, Grahamgraham.ashcroft (at) dlr.deUNSPECIFIED
Nicke, Eberhardeberhard.nicke (at) dlr.deUNSPECIFIED
Kügeler, EdmundEdmund.Kuegeler (at) dlr.dehttps://orcid.org/0000-0002-9719-626X
Date:7 May 2018
Journal or Publication Title:Proceedings of Montreal 2018 Global Power and Propulsion Forum
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
ISSN:2504-4400
Status:Published
Keywords:Full annulus CFD, HB, Verdichter, Vollkranzrechnung
Event Title:GPPS Montreal 18
Event Location:Montreal, Kanada
Event Type:international Conference
Event Dates:07.-09.Mai 2018
Organizer:Global Power and Propulsion Society (GPPS)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Fan and Compressor Technologies
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Fan and Compressor
Deposited By: Reutter, Oliver
Deposited On:11 Jul 2018 10:38
Last Modified:31 Jul 2019 20:18

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