1

SEE MSc. Thesis

CFD simulation of flow field in a hydraulic turbine

2008-05-20 Meeting

KTHSWECOTURAB

2

Overview of the Project Work Flow

Project Timing

3

Project Approach

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

generation

G.V B.R D.T

4

Meshing of Guide Vane • Modified G.V geometry & opening angle

5

Meshing of Guide Vane

Passage geometry Passage mesh

O-grid around GV

6

Meshing of Guide Vane- Challenges

7

Meshing of Guide Vane- Challenges

8

Meshing of Guide Vane- Challenges

9

Meshing of Guide Vane- Challenges

10

Meshing of Guide Vane- Solution

• Method 1

11

Meshing of Guide Vane- Solution

12

• Method 1

• Method 2

Meshing of Guide Vane- Solution

13

Meshing of Guide Vane- Solution

14

• Method 1

• Method 2

Meshing of Guide Vane- Solution

• Method 3

15

Meshing of Blade Runner

16

Meshing of Blade Runner

17

Meshing of Blade Runner

• Animation 1

• Animation 2

18

Meshing of Draft Tube

19

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

20

Open questions

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

• CFX Turbo instead of the Fluent

• Turab factory+site visit