Fluid Dynamic Analysis and Comparison of Windsurfing Fins

1
Fluid Dynamic Analysis and Comparison of
Windsurfing Fins

• MER 197 Union College Senior Design Project Fall
  2004
  
• John Gallagher
• Advisor Professor Anderson
• Fall Term Presentation - 11/4/04

2
Presentation Outline

• Project Outline
• Fall Term
• Research
• Sailing/Windsurfing Background, Fins, Companies
• Experimentation
• SolidWorks
• StarCD
• Winter Term Plans
• StarCD testing
• Wind tunnel testing

3
Project Outline

• My Goals
• Research
• Fins
• Fin production
• Experimentation
• SolidWorks
• StarWorks
• Wind tunnel
• Design
• Create new fin design

4
Background on Sailboat Movement
(Top View) Fin Changes Sideways Wind to Forward
Movement

5
Fin Design

• Many Companies
• Mass production large companies
• Custom fin design small companies
• Modern Design Techniques
• Fluid dynamic design
• CAD, Water tunnel
• Rapid prototyping
• Construction from mold

6
Fin Design

• (MFC VS Keith Teboul)
• Wave Fin
• Wide base
• - carving in waves
• Narrow tip
• - good control

• (MFC The Move)
• All Around Fin
• Good in high wind
• Good control

• (MFC Liquid)
• High Wind Race Fin
• Deep, wide
• Good upwind tracking
• Stable in high wind

7
Fin Design

• (True Ames Fins Shallow Water)
• Shallow Water Fin
• Short, wide
• Avoid hitting ground
• in shallow water

• (Curtis Weed Deep Tuttle)
• Shallow Water Weed Fin
• Large rake angle
• Avoids getting hung up on
• weeds

8
SolidWorks Design
Original Fins
Curtis Wave 21cm
Curtis CR 10 46cm
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SolidWorks Fins
Curtis Wave 21cm
Curtis CR 10 46cm
10
Curtis Wave 21cm
Curtis CR 10 46cm
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StarWorks
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Winter Term 2005

• More StarCD Testing
• Finalize fin designs
• Design custom fin
• Wind Tunnel Testing
• Rapid prototyping
• Lift, Drag, PIV

13
Acknowledgements

• JR Fowler
• Maui Fin Company
• Curtis Fin Company
• True Ames Fins
• John Pilling
• Denis Wee
• Professor Anderson

14
Questions?