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A Model for Potential Deterministic Effects in Turbomachinery Flows

Stollenwerk, Stefan and Nürnberger, Dirk (2008) A Model for Potential Deterministic Effects in Turbomachinery Flows. In: World Congress on Engineering 2008, 2, pp. 1386-1391. Newswood Limited. The 2008 International Conference of Mechanical Engineering, 2008-07-02 - 2008-07-04, London (U.K.). ISBN 978-988-17012-3-7.

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The unsteady interaction between blade rows due to a potential field is very important in highly loaded compressors because of its impact on operating performance. In this context the interactions of a flat plate wake with an upstream running pressure wave is investigated numerically using the compressible Navier-Stokes solver TRACE. Several flow conditions regarding Reynolds number, pressure wave amplitude and the axial position of the wave entry plane are examined. The observed phenomena and dependencies are used to develop a transport model which adds deterministic stresses by means of source terms to the stationary simulation. Calculations based on the proposed model are described and compared with the time-accurate and steady-state numerical simulations. The model captures the influence of the unsteady effects on the time-mean flow accurately and yields a speedup factor of approximately two orders of magnitude compared to time-accurate simulations.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:A Model for Potential Deterministic Effects in Turbomachinery Flows
AuthorsInstitution or Email of Authors
Stollenwerk, StefanUNSPECIFIED
Nürnberger, DirkUNSPECIFIED
Date:July 2008
Journal or Publication Title:World Congress on Engineering 2008
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 1386-1391
Publisher:Newswood Limited
Series Name:Lecture Notes in Engineering and Computer Science
Keywords:Aerodynamics, Turbomachinery, Blade Row Interaction, Deterministic Stresses, Numerical Methods
Event Title:The 2008 International Conference of Mechanical Engineering
Event Location:London (U.K.)
Event Type:international Conference
Event Dates:2008-07-02 - 2008-07-04
Organizer:International Association of Engineers
HGF - Research field:Aeronautics, Space and Transport (old)
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
Deposited By: Stefan Stollenwerk
Deposited On:19 Jan 2009
Last Modified:27 Apr 2009 15:44

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