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SEE MSc. Thesis

CFD simulation of flow field in a hydraulic turbine

2008-05-20 Meeting

KTHSWECOTURAB

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Overview of the Project Work Flow

Project Timing

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Project Approach

• 3 Main parts• Structured meshing• Using symmetry in mesh

generation

G.V B.R D.T

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Meshing of Guide Vane

• Modified G.V geometry & opening angle

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Meshing of Guide Vane

Passage geometry Passage mesh

O-grid around GV

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Meshing of Guide Vane- Challenges

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Meshing of Guide Vane- Challenges

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Meshing of Guide Vane- Challenges

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Meshing of Guide Vane- Challenges

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Meshing of Guide Vane- Solution

• Method 1

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Meshing of Guide Vane- Solution

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• Method 1

• Method 2

Meshing of Guide Vane- Solution

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Meshing of Guide Vane- Solution

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• Method 1

• Method 2

Meshing of Guide Vane- Solution

• Method 3

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Meshing of Blade Runner

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Meshing of Blade Runner

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Meshing of Blade Runner

• Animation 1

• Animation 2

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Meshing of Draft Tube

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Next Steps

• Exporting the meshes to the solver (Fluent)

• Taking a down to top approach (part to total)

• Each passage and part will be solved with inlet mass flow boundary condition seperatly

• ? Using pridiodicity for 3 G.V+4 B.R then apply the outlet as the inlet of D.T

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Open questions

• Confirmation of the B.R spatial location relative to the rotor shaft

• CFX Turbo instead of the Fluent

• Turab factory+site visit