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Experimental Study on Dam-Break Waves for Silted-Up Reservoirs

Experimental Study on Dam-Break Waves for Silted-Up Reservoirs. CE 416 – Chris Reynolds. Key Term Definitions. Celerity The speed of propagation of a wave on the surface of a liquid Thixotropy The phenomenon where a thick, viscous fluid becomes thin, less viscous when shaken or agitated.

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Experimental Study on Dam-Break Waves for Silted-Up Reservoirs

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  1. Experimental Study on Dam-Break Waves for Silted-Up Reservoirs CE 416 – Chris Reynolds

  2. Key Term Definitions • Celerity • The speed of propagation of a wave on the surface of a liquid • Thixotropy • The phenomenon where a thick, viscous fluid becomes thin, less viscous when shaken or agitated

  3. Purpose • Study and experiment performed on the effect of sediment buildup using Ritter (1892) and Lauber and Hager (1998) equations • Different Sediment Types • Different Fluid Viscosities • Different Aspect Ratios

  4. Approach • The study revealed that the main factor that affects the celerity of the wave was the: • Height of the sediment buildup relative to the height of the water above it

  5. Results • Downward concave shape • Higher energy downstream

  6. Results • Downward convex shape • Lower energy downstream

  7. Results • Ritter (1892) • Lauber and Hager (1998)

  8. Results

  9. Results • Dunes • Created when the sediment buildup height is relatively similar height to the height of the fluid

  10. Comments • Unsure as to how an equation that has been accepted for over 100 years cannot be proven in a lab experiment • Possible that the experiment performed was not adequately representing a real-world scenario

  11. Questions? • Graduation in 10 days. Woohoo!

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