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On the Application of a Harmonic Balance Method with a Volume Source Cooling Model to the Simulation of a Film-Cooled Turbine Stage

Becker, Kai and Ashcroft, Graham and Weber, Anton and Rochhausen, Stefan and Schmid, Gregor and Rodriguez, Jose (2016) On the Application of a Harmonic Balance Method with a Volume Source Cooling Model to the Simulation of a Film-Cooled Turbine Stage. In: ASME Turbo Expo 2016: Turbine Technical Conference and Exposition, Volume 2D. ASME 2016 Turbo Expo: Turbomachinery Technical Conference and Exposition, 13.-17. Jun. 2016, Seoul, Südkorea. DOI: 10.1115/GT2016-57199 ISBN 978-0-7918-4972-9

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Abstract

The application of Reduced Order Models (ROMs) in the simulation of complex, time-dependent flows in turbomachines provides a means to significantly reduce the cost, both in terms of preprocessing and computational overhead, of numerical simulations. In this work the development and combination of two ROMs for the simulation of the unsteady, time-periodic flow and heat transfer in a film-cooled turbine are presented. For the simulation of the unsteady flow an alternating frequency/time domain Harmonic Balance (HB) method is applied. To allow the efficient preprocessing and simulation of film-cooled blades a second, volume source based, ROM is incorporated into the underlying nonlinear solver of the HB method. Through the application of the volume source model the time consuming and error prone resolution and specification of individual cooling holes is no longer necessary. To validate the newly implemented volume source model a number of simple academic test cases are presented and analyzed in detail. Following the basic validation of the cooling model the approach is combined with the HB method to simulate the unsteady flow in the first one and half stages of a high-pressure turbine.

Item URL in elib:https://elib.dlr.de/110300/
Document Type:Conference or Workshop Item (Speech)
Title:On the Application of a Harmonic Balance Method with a Volume Source Cooling Model to the Simulation of a Film-Cooled Turbine Stage
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Becker, KaiKai.Becker (at) dlr.deUNSPECIFIED
Ashcroft, GrahamGraham.Ashcroft (at) dlr.deUNSPECIFIED
Weber, AntonAnton.Weber (at) dlr.deUNSPECIFIED
Rochhausen, StefanStefan.Rochhausen (at) dlr.deUNSPECIFIED
Schmid, GregorSiemens AGUNSPECIFIED
Rodriguez, JoseSiemens Energy Inc.UNSPECIFIED
Date:June 2016
Journal or Publication Title:ASME Turbo Expo 2016: Turbine Technical Conference and Exposition, Volume 2D
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.1115/GT2016-57199
ISBN:978-0-7918-4972-9
Status:Published
Keywords:CFD, Harmonic Balance, Turbine, Filmkühlung
Event Title:ASME 2016 Turbo Expo: Turbomachinery Technical Conference and Exposition
Event Location:Seoul, Südkorea
Event Type:international Conference
Event Dates:13.-17. Jun. 2016
Organizer:ASME
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Numerical Methodes
Deposited By: Becker, Kai
Deposited On:09 Jan 2017 07:53
Last Modified:09 Jan 2017 07:53

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