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Book of Full Papers - Symposium Hydro Engineering
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𝑆 𝑏 = 𝐵 𝐷 𝑈 √𝑔 𝐶 𝑒 [ −0.27Δ𝛾 𝑠 𝑑 𝛾 𝜏 𝑐 {1+0.5( 𝜉 𝑈 𝑏 𝑈 ) 2 } ] (7) G. Bagnold-Bailard Equation: Bagnold (1960, 1966) developed an approach to bed load transport prediction that is based on stream power per unit channel width Average velocity (U) can be given by 𝑈 =𝑢 𝑐 +𝑢 𝑡 (8) where uc = fluid velocity due to current effect (m/s) ut = Orbital fluid velocity above the bed at time t (m/s) assume uc = U, then bed load transport Sb is related to IUI2U 𝑆 𝑏 (𝑡 )= 𝜏 0 [1− 𝜌 𝑓 𝜌 𝑠 ] { 𝑒 𝑏 𝑡 𝑎 𝑛 𝛼 +𝑒 𝑠 (1−𝑒 𝑏 ) ?̅? 𝜔 0 } (9) the suspended load transport Ss is related to IUI3U and computed from 𝑆 𝑠 (𝑡 )= 𝜏 0𝑈 [1− 𝜌 𝑓 𝜌 𝑠 ] { 𝑒 𝑠 𝑡 𝑎 𝑛 𝛼 +𝑒 𝑠 (1−𝑒 𝑠 ) ?̅? 𝜔 0 } (10) The Bijiker model predicts too small concentration magnitudes and too large fluid velocities in the near bed zone. These results in current related sediment transport rates that are 4 times for small transports (<0.001Kg/ms) and 4 times large transports.The evaluation of sediment transport based on above methods except Bijker and Bagnold is given in table2. Table:1. Prediction of Sediment by Investigators S No. Investigators Predicted Sediment ton 1. Camenen and Larson Method 1194604.32 2. Engelund and Hansen Method 756025.46 3. Ackers and White’s Method 600278.89 4. Meyer-Peter and Muller Method 445292.83 425
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Book of Full Papers Symposium Hydro Engineering
Titel
Book of Full Papers
Untertitel
Symposium Hydro Engineering
Autor
Gerald Zenz
Verlag
Verlag der Technischen Universität Graz
Ort
Graz
Datum
2018
Sprache
englisch
Lizenz
CC BY-NC-ND 4.0
ISBN
978-3-85125-620-8
Abmessungen
20.9 x 29.6 cm
Seiten
2724
Schlagwörter
Hydro, Engineering, Climate Changes
Kategorien
International
Naturwissenschaften Physik
Technik
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