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The Challenge of Time-Resolved Flow Investigation of a One-Stage Centrifugal Compressor with a Non-Symmetric Volute

Voges, Melanie and Klinner, Joachim and Willert, Christian and Bassetti, Alessandro and Reutter, Oliver and van Rooij, Michel (2021) The Challenge of Time-Resolved Flow Investigation of a One-Stage Centrifugal Compressor with a Non-Symmetric Volute. In: 14th European Turbomachinery Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2021. 14th European Turbomachinery Conference, 12.-16. Apr. 2021, Danzig, Polen. doi: 10.5281/zenodo.4911546.

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Official URL: https://www.euroturbo.eu/publications/conference-proceedings-repository/all-papers/

Abstract

A single stage industrial centrifugal compressor including vaneless diffuser and a non-symmetric volute is investigated with regard to the development of flow instabilities and rotating stall. A deeper understanding of flow phenomena that might be a precursor for stall inception would help to predict unstable operation already during the design phase of a compressor stage, as today the design is commonly supported by CFD analysis providing performance data and flow information at an early stage of the design process. Due to the complex flow path geometry of the volute a sophisticated instrumentation concept was developed allowing for unsteady pressure measurement with synchronized high-resolution flow field measurement. This paper summarizes the challenges and the steps taken during rig design in terms of integrating non-intrusive, high resolution pressure measurement sensors along with access for optical techniques such as time-resolved PIV and L2F to investigate unsteady flow phenomena and stall inception occurring at reduced speed operation. Results of performance measurements and surge testing are presented and compared to CFD simulations. Exemplary results of the extensive database obtained by optical techniques in combination with dynamic pressure measurements are provided.

Item URL in elib:https://elib.dlr.de/142094/
Document Type:Conference or Workshop Item (Speech)
Title:The Challenge of Time-Resolved Flow Investigation of a One-Stage Centrifugal Compressor with a Non-Symmetric Volute
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Voges, MelanieMelanie.Voges (at) dlr.dehttps://orcid.org/0000-0001-7486-3763
Klinner, JoachimJoachim.Klinner (at) dlr.dehttps://orcid.org/0000-0003-2709-9664
Willert, ChristianChris.Willert (at) dlr.dehttps://orcid.org/0000-0002-1668-0181
Bassetti, AlessandroAlessandro.Bassetti (at) dlr.deUNSPECIFIED
Reutter, OliverOliver.Reutter (at) dlr.dehttps://orcid.org/0000-0002-2080-7691
van Rooij, MichelMichel.van.Rooij (at) nlr.nlUNSPECIFIED
Date:April 2021
Journal or Publication Title:14th European Turbomachinery Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.5281/zenodo.4911546
Status:Published
Keywords:rotating stall, radial compressor, time-resolved PIV
Event Title:14th European Turbomachinery Conference
Event Location:Danzig, Polen
Event Type:international Conference
Event Dates:12.-16. Apr. 2021
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Clean Propulsion
DLR - Research area:Aeronautics
DLR - Program:L CP - Clean Propulsion
DLR - Research theme (Project):L - Virtual Engine
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine Measurement Systems
Institute of Propulsion Technology > Fan and Compressor
Deposited By: Voges, Melanie
Deposited On:09 Jun 2021 09:26
Last Modified:16 Oct 2021 03:00

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