OpenFOAMOpenFOAM TurbomachineryTurbomachineryWorkingWorking Group:Group:
Progress reportProgress report
Maryse Page andMartin BeaudoinHydro-Québec, Research Institute
Fifth OpenFOAM Workshop Gothenburg, 21-24 June 2010
Håkan NilssonChalmers Universityof Technology
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About the About the OpenFOAMOpenFOAM Turbo WG Turbo WG
Initiated at the Second OpenFOAM Workshop in Zagreb, June 2007Steering committee:Maryse Page, Martin Beaudoin (Hydro-Québec)and Håkan Nilsson (Chalmers)Homepage:
OpenFOAM Wiki:http://openfoamwiki.net/index.php/Sig_Turbomachinery
Code sharing: A branch of the OpenFOAM-extend project on SourceForge.net
Contact:[email protected]
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Objectives of the Working Group Objectives of the Working Group
Identify common interests with OpenFOAM for turbomachinery, and plan joint activitiesDevelop OpenFOAM for turbomachinery applications, including pre-processing, solution methods, and post-processing.Provide tutorials on how to produce accurate results usingOpenFOAM in turbomachines.Distribute relevant validation test cases and correspondingOpenFOAM applications.Use OpenFOAM to develop Best Practice Guidelines for CFD in turbomachines.Connect people with the same interest: OpenFOAM and turbomachinery.Organize meetings, workshops and collaborations
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Contributions to Contributions to OpenFOAMOpenFOAM WikiWiki
DevelopmentsDescriptions of contributed solvers, utilities and libraries.
TutorialsHow to implement (new application, boundary condition, turbulence model)Cylindrical coordinate systemsturboPerformance functionObject
Howtos: mergeMeshes, GGI, MRFSimpleFoam, etc.Validation test cases
ERCOFTAC conical diffuserDellenback Abrupt Expansion (in turbulenceWG wiki)ERCOFTAC centrifugal pumpSingle-channel pumpTimisoara swirling flow test rig
List of publications
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OpenFOAMOpenFOAM--extend on extend on SourceForge.netSourceForge.net
Contributions to Turbomachinery branch: Source codes:
– Mesh converters (cgnsToFoam, foamToCGNS)– Specialized BC (profile1DfixedValue)– Pre-processing tools (addSwirlAndRotation, initializeRotation)– turboPerformance functionObject
Case-studies/tutorials/validation– ercoftacConicalDiffuser– ercoftacCentrifugalPump– singleChannelPump– timisoaraSwirlGenerator
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Work in progressWork in progress
Development:MixingPlane interfaceAutomated test-loop :
– Update and compile librairies and applications– Run test case suite– Parallel benchmarking
Validation and testing:GGI, cyclicGGIGGI and mixingPlane in parallel
HPC for hydroturbines applications on large clustersAlso, contributions from University of Munich:
domainScaling interfacesoverlapGGI
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CaseCase--studiesstudies
Instructions and comments on OpenFOAMWikiAll files available on OpenFOAM-extend
cases set-upexperimental dataapplications, libraries
Mesh parametrization for blockMesh using m4 (O-grid, radial grid)Automatic post-processing (sample, gnuplot)Space for documentation
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ERCOFTAC Conical DiffuserERCOFTAC Conical Diffuser
Ref: P.D. Clausen, S.G.Koh and D.H.Wood,Measurements of a Swirling Turbulent Boundary Layer Developing in a Conical Diffuser,Experimental Thermal and Fluid Science 1993, 6:39-48
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Cases in OF Wiki and Cases in OF Wiki and OpenFOAMOpenFOAM--extendextend
Case0 Case2Case1
Case1: Extended base caseCase1.1: Radial meshCase1.2: MFRSimpleFoamCase1.3: 2D wedge mesh
Case2: Case1 with a dumpCase2.1: Inlet velocity profileCase2.2: Radial mesh
Case0: Base case
• All cases except Case1.2 use simpleFoam• k-ε with wall functions, average y+: 25-27• div(phi,U) Gauss linearUpwind Gauss;• div(phi,k) Gauss upwind; • div(phi,epsilon) Gauss upwind;
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ERCOFTAC Centrifugal PumpERCOFTAC Centrifugal Pump
The centrifugal pump has 7 impeller blades, 12 diffuser vanes and 6% vaneless radial gap. The pump operates on air, and at constant rotational speed of 2000 rpm.
Ref: Ubaldi, M., Zunino, P., Barigozzi, G. and Cattanei, A., "An Experimental Investigation of Stator Induced Unsteadiness on Centrifugal Impeller Outflow", Journal of Turbomachinery, vol.118, 41-54, 1996
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The The DellenbackDellenback Abrupt Expansion caseAbrupt Expansion case--studystudy
Dellenback, P.A., Metzger, D.E., and Neitzel, G.P., 1987, Measurements in Turbulent Swirling Flow Through an Abrupt Expansion, AIAA J., 26(6), pp.669-681http://openfoamwiki.net/index.php/Sig_Turbulence_/_Dellenback_Abrupt_Expansion
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SingleSingle--Channel PumpChannel Pump
Ref: Auvinen, M., Ala-Juusela, J., Pedersen, N. and Siikonen, T., “Time-Accurate Turbomachinery Simulations iwht Open-Source CFD; Flow Analysis of a Single-Channel Pump with OpenFOAM", ECCOMAS CFD 2010, Lisbon, June, 2010
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Timisoara Swirling Flow Test RigTimisoara Swirling Flow Test Rig
Ref: Bosioc, A., “2D LDV Measurements on Swirling Flow in a Simplified Draft Tube", Proceedings of the CMFF, 2009
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Agenda for Turbo WG meeting (AM)Agenda for Turbo WG meeting (AM)
Some topics related to GGIH.Jasak (Wikki), M.Beaudoin (Hydro-Québec)
ERCOFTAC Centrifugal Pump Case-StudyS.Xie, O.Petit and H.Nilsson (Chalmers)
Timisoara Swirling Flow Test Rig Case-StudyO.Bergman, O.Petit and H.Nilsson (Chalmers)
Single-channel Pump Case-Study and turboPerformancefunctionObject
M. Auvinen (Aalto University) and N.Pedersen (Grundfos)Update on the mixingPlane interface development for steady-state computations
M.Beaudoin (Hydro-Québec)Contributions / presentations / discussions from the audienceDiscussions : Aims for the next year
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Agenda for Turbo/Agenda for Turbo/ShipShip Hydro WG meeting Hydro WG meeting (PM)(PM)
Cavitation modelling WG – a proposalM.Page (Hydro-Québec)
Cavitition modelling case-studiesM.Page, R.Bannari, H.Nilsson, R.Bensow, S.E.Kim and E.Paterson
Multiphase turbulent flow simulation around foil, propellers and pumps – Numerical and physicalmodeling
S.E.Kim (David Taylor Model Basin)
Discussions
