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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 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
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
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
Results • Downward concave shape • Higher energy downstream
Results • Downward convex shape • Lower energy downstream
Results • Ritter (1892) • Lauber and Hager (1998)
Results • Dunes • Created when the sediment buildup height is relatively similar height to the height of the fluid
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
Questions? • Graduation in 10 days. Woohoo!