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How does the flow velocity influence the formation of scour? 


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The flow velocity has a significant influence on the formation of scour . High flow velocities in rivers can lead to scour, which is the erosion of sediment around structures. To reduce scour, flow velocities need to be reduced . The ratio of mean approach flow velocity to the critical mean approach flow velocity for entrainment of bed sediment (V/Vc) is an important parameter in determining the scour condition . Local flow velocity, rather than approach flow velocity, is the determining factor in the formation of scour near engineering structures . The maximum scour depth increases with an increase in flow depth or velocity . The equilibrium depth of scour increases with an increase in approach flow velocity . Overall, the flow velocity plays a crucial role in the formation and depth of scour around structures in rivers.

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The paper states that the depth of clear-water scour increases almost linearly with the dimensionless approach flow velocity, and the maximum scour depth occurs when the dimensionless approach flow velocity is equal to 1.0.
Open accessProceedings ArticleDOI
Mehmet Öner Yeleğen, Ali Uyumaz 
01 Mar 2016
1 Citations
The paper states that the ratio of flow velocity to the critical flow velocity is an important parameter in calculating scour depth.
The paper states that the maximum scour depth increases with an increase in flow velocity.
The paper does not directly mention how flow velocity influences the formation of scour.
The paper does not provide information on how flow velocity influences the formation of scour.

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