This is an image of a green food coloring dye injected in a water filled flume passing over a submerged airfoil. The airfoil is attached to the far side of the flume from the camera. The dye was diluted with water and injected into the flow path via a needle syringe which was removed before the image was captured. The flow in this image was relatively slow in order to produce a low Reynolds Number in the water, producing a more laminar flow of dye and water around the airfoil which better visualizes the fluid boundary layers and velocities around it.
IV4 – Cole Smith
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Flow Vis Guidebook
- Introduction to the Guidebook
- Overview 1: Phenomena. Why Does It Look Like That?
- Overview 2: Visualization Techniques
- Overview 3: Lighting
- Overview 4 - Photography A: Composition and Studio Workflow
- Overview 4 - Photography B: Cameras
- Overview 4 - Photography C: Lenses - Focal Length
- Overview 4 - Photography C: Lenses - Aperture and DOF
- Overview 4: Photography D: Exposure
- Overview 4 - Photography E - Resolution
- Overview 5 - Post-Processing
- Clouds 1: Names
- Clouds 2: Why Are There Clouds? Lift Mechanism 1: Instability
- Clouds 3: Skew - T and Instability
- Clouds 4: Clouds in Unstable Atmosphere
- Boundary Techniques - Introduction
- Dye Techniques 1 - Do Not Disturb
- Dye Techniques 2 - High Visibility
- Dye Techniques 3 - Light Emitting Fluids
- Photons, Wavelength and Color
- Refractive Index Techniques
- Art and Science
- TOC and Zotpress test
I like the use of monochromatic, as well as the comparison of your two images! Well framed and balanced photo. It is really cool to see this experiment turn out.
After seeing the flume in the ITLL for months, it’s really cool to see the product of using it and the setup
I like that you chose to include the top of the water level. You can see how the water bows around the airfoil at the top.
I really like that you can see the boundary layer around the airfoil very clearly!
How did you remove the texture of the paper? I was having a hard time with that.
I really like the transition to turbulence on the end of the airfoil.
I really like the aspect ratio that you used for the image, and I really like that you chose to put it in black in white! I think it really think it adds to the impact of the image.
I really enjoyed your use of monochrome for this image. You can really see the turbulent flow on the back side of the air foil, depicting the physics well.