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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 (2020) A Deep Insight into the Transonic Flow of an Advanced Centrifugal Compressor Design. ASME Journal of Turbomachinery, 142 (9), pp. 1-9. American Society of Mechanical Engineers (ASME). doi: 10.1115/1.4047609. ISSN 0889-504X.

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Official URL: http://doi.org/10.1115/1.4047609


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/135481/
Document Type:Article
Title:A Deep Insight into the Transonic Flow of an Advanced Centrifugal Compressor Design
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Junker, MartinInstitut für Antriebstechnik, DLRUNSPECIFIEDUNSPECIFIED
Date:21 August 2020
Journal or Publication Title:ASME Journal of Turbomachinery
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1-9
Publisher:American Society of Mechanical Engineers (ASME)
Keywords:Centrifugal compressors and pumps, Computational Fluid Dynamics (CFD), Measurement techniques
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:High-Temperature Thermal Technologies
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:31 Aug 2020 12:21
Last Modified:24 Oct 2023 13:55

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