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Design Optimization of a Multi-Stage Axial Compressor Using Throughflow and a Database of Optimal Airfoils

Schnoes, Markus and Voß, Christian and Nicke, Eberhard (2018) Design Optimization of a Multi-Stage Axial Compressor Using Throughflow and a Database of Optimal Airfoils. In: Proceedings of the GPPS 2018. GPPS 2018, 7.-9. Mai 2018, Montreal, Kanada.

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The basic tool set to design multi-stage axial compressors consists of fast codes for throughflow and blade-to-blade analysis. Detailed blade row design is conducted with 3D CFD, mainly to control the end wall flow. This work focuses on the interaction between throughflow and blade-to-blade design and the transition to 3D CFD. A design strategy is presented that is based on a versatile airfoil family. The new class of airfoils is generated by optimizing a large number of airfoil shapes for varying design requirements. Each airfoil geometry satisfies the need for a wide working range as well as low losses. Based on this data, machine learning is applied to estimate optimal airfoil shape and performance. The performance prediction is incorporated into the throughflow code. Based on a throughflow design, the airfoils can be stacked automatically to generate 3D blades. On this basis, a 3D CFD setup can be derived. This strategy is applied to study upgrade options for a 15-stage stationary gas turbine compressor test rig. At first, the behavior of the new airfoils is studied in detail. Afterwards, the design is optimized for mass flow rate as well as efficiency. Selected configurations from the Pareto-front are evaluated with 3D CFD.

Item URL in elib:https://elib.dlr.de/119953/
Document Type:Conference or Workshop Item (Speech)
Title:Design Optimization of a Multi-Stage Axial Compressor Using Throughflow and a Database of Optimal Airfoils
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:May 2018
Journal or Publication Title:Proceedings of the GPPS 2018
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Compressor Design Optimization Throughflow
Event Title:GPPS 2018
Event Location:Montreal, Kanada
Event Type:international Conference
Event Dates:7.-9. Mai 2018
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 (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Fan and Compressor
Deposited By: Schnös, Markus
Deposited On:28 May 2018 11:44
Last Modified:31 Jul 2019 20:17

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