1. Date of download: 11/1/2017
Copyright © ASME. All rights reserved.
From: Flow in the Simplified Draft Tube of a Francis Turbine Operating at Partial Load—Part II: Control of the Vortex Rope
J. Appl. Mech. 2014;81(6): doi: /
Figure Legend:
Computational domain for the simplified draft tube investigated in this study

2. Date of download: 11/1/2017
Copyright © ASME. All rights reserved.
From: Flow in the Simplified Draft Tube of a Francis Turbine Operating at Partial Load—Part II: Control of the Vortex Rope
J. Appl. Mech. 2014;81(6): doi: /
Figure Legend:
Water jet injection from the runner crown cone into the draft tube

3. Date of download: 11/1/2017
Copyright © ASME. All rights reserved.
From: Flow in the Simplified Draft Tube of a Francis Turbine Operating at Partial Load—Part II: Control of the Vortex Rope
J. Appl. Mech. 2014;81(6): doi: /
Figure Legend:
Axial velocity profiles at the inlet section to the draft tube for (a) case I and (b) case II, effect of jet injection

4. Date of download: 11/1/2017
Copyright © ASME. All rights reserved.
From: Flow in the Simplified Draft Tube of a Francis Turbine Operating at Partial Load—Part II: Control of the Vortex Rope
J. Appl. Mech. 2014;81(6): doi: /
Figure Legend:
Streamline patterns for the steady axisymmetric simulation of flow in the draft tube, effect of water jet injection (a) case I (91% of BEP flow rate) and (b) case II (70% of BEP flow rate)

5. Date of download: 11/1/2017
Copyright © ASME. All rights reserved.
From: Flow in the Simplified Draft Tube of a Francis Turbine Operating at Partial Load—Part II: Control of the Vortex Rope
J. Appl. Mech. 2014;81(6): doi: /
Figure Legend:
Losses in the draft tube for (a) case I and (b) case II as a function of the jet radius

6. Date of download: 11/1/2017
Copyright © ASME. All rights reserved.
From: Flow in the Simplified Draft Tube of a Francis Turbine Operating at Partial Load—Part II: Control of the Vortex Rope
J. Appl. Mech. 2014;81(6): doi: /
Figure Legend:
Contours of instantaneous axial velocity showing the stagnant region and vortex rope for (a) case I (91% of BEP flow rate) and (b) case II (70% of BEP flow rate) with and without water jet injection

7. Date of download: 11/1/2017
Copyright © ASME. All rights reserved.
From: Flow in the Simplified Draft Tube of a Francis Turbine Operating at Partial Load—Part II: Control of the Vortex Rope
J. Appl. Mech. 2014;81(6): doi: /
Figure Legend:
Time evolution of the controlled draft tube flow by water jet injection showing the reduction and elimination of the vortex rope (top left to bottom right)

8. Date of download: 11/1/2017
Copyright © ASME. All rights reserved.
From: Flow in the Simplified Draft Tube of a Francis Turbine Operating at Partial Load—Part II: Control of the Vortex Rope
J. Appl. Mech. 2014;81(6): doi: /
Figure Legend:
Unsteady pressure on the draft tube wall for case II, effect of water jet injection