Simulating of Ventilation in a Model Hydro-
Generator
Hamed Jamshidi
With OpenFOAM
2015-11-13 Gothenburg Region OpenFOAM Meeting 2
Hydro-Generator
2015-11-13 Gothenburg Region OpenFOAM Meeting 3
Generator Model
2015-11-13 Gothenburg Region OpenFOAM Meeting 4
Computational Domain
Rotor
Zone
Stator
Zone
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Steady Simulation
Multiple Reference Frames (MRF)
Stationary Frame
Steady-state Solver
Rotating Frame
MRF Source Term
simpleFoam + fvOptions in OpenFOAM
MRFSimpleFoam in FOAM-extend
In Each Rotating Zone;
1) Add the Coriolis Force to the Momentum Equation
2) Calculate the Flux From the Relative Velocity
2015-11-13 Gothenburg Region OpenFOAM Meeting 6
MRF Model
2015-11-13 Gothenburg Region OpenFOAM Meeting 7
Frozen Rotor Approach
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Frozen Rotor Results
1st
2nd
3rd
4th
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Mixing Plane Approach
1st
3rd
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Mixing Plane
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Simulation Vs. Experiment
1st
2nd
3rd
4th
2015-11-13 Gothenburg Region OpenFOAM Meeting 12
Velocity Field
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MRF Start up (FOAM-extend)
MRFZone.C
2015-11-13 Gothenburg Region OpenFOAM Meeting 14
MRF Start up (FOAM-extend)
MRFSimpleFoam.C
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MRF Start up (OpenFOAM)
fvOptions
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MRF Convergence
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MRFPimpleFoam
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MRFPimpleFoam
pimpleFoam.C
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MRFPimpleFoam Convergence
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Transient Simulation
Moving Mesh
Entire of the Domain
Ggi(FOAM-extend) AMI(OpenFOAM)
Section of the Domain
overLapGgi(FOAM-extend)
Thanks for Your Attention
2015-11-13 Gothenburg Region OpenFOAM Meeting 21