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Using automated optimisation to calibrate a correlation-based transition model

Morsbach, Christian and Aulich, Marcel and Klingenberg, Florian (2017) Using automated optimisation to calibrate a correlation-based transition model. In: 11th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2015. 12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics (ETC12), 03.-07. Apr. 2017, Stockholm, Schweden.

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Abstract

Transition models used in turbomachinery CFD are based on empirical correlations derived from a series of fundamental test cases. When these models are applied to complex configurations they often do not perform as desired and need to be tuned to the respective area of application. In this paper, an approach to tune a correlation based transition model to a given set of turbine rigs using automated optimisation is presented. The model is optimised such that deviations from experiments in terms of blade pressure distribution and global losses are minimised. The optimisation strategy and results are analysed in detail showing strengths and weaknesses of the proposed approach. While the agreement with experimental data of the turbine rigs can be improved, an analysis of zero pressure gradient flat plate flow shows that the resulting models cannot be considered as general as the original model.

Item URL in elib:https://elib.dlr.de/116201/
Document Type:Conference or Workshop Item (Speech)
Title:Using automated optimisation to calibrate a correlation-based transition model
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Morsbach, ChristianChristian.Morsbach (at) dlr.dehttps://orcid.org/0000-0002-6254-6979
Aulich, MarcelMarcel.Aulich (at) dlr.deUNSPECIFIED
Klingenberg, Florianflorian.klingenberg (at) mtu.deUNSPECIFIED
Date:April 2017
Journal or Publication Title:11th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Status:Published
Keywords:transition modelling, optimisation, CFD, turbine
Event Title:12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics (ETC12)
Event Location:Stockholm, Schweden
Event Type:international Conference
Event Dates:03.-07. Apr. 2017
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 - Virtual Engine and Validation methods
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Numerical Methodes
Institute of Propulsion Technology > Fan and Compressor
Deposited By: Morsbach, Christian
Deposited On:11 Dec 2017 07:20
Last Modified:05 Feb 2018 15:41

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