How does the presence of slopes affect the flow behavior in open channel flows?
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The presence of slopes in open channel flows has a significant impact on the flow behavior. When the channel slope becomes steeper, the water level increases, and the flow takes a vertical direction after hitting the upstream wall . In the case of a sloped channel, recirculation zones are localized at the foot of the downstream wall, whereas in a horizontal channel, they are elongated downstream the obstacle . The presence of emergent rigid vegetation in open channels reduces the longitudinal profile of flow velocity, Reynolds shear stress, and turbulence intensities, resulting in reduced flow resistance . The use of large-scale geometric roughness elements, such as stone or concrete blocks, placed at the channel's bed can change the hydraulic behavior of the flow and help control erosions and sedimentations. The effect of roughness elements increases with the increasing number of lines of roughness elements .
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| Papers (4) | Insight |
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| The provided paper does not mention anything about the presence of slopes and its effect on flow behavior in open channel flows. | |
3 Citations | The paper discusses the flow behavior in open channel flows with slopes. It presents a sheet flow paradigm model that incorporates the concept of hydraulic radius and shows that the bulk shear rate is a unique function of the rheology and wall shear stress for all values of flow depth and slope. |
3 Citations | The provided paper does not discuss the effect of slopes on flow behavior in open channel flows. |
1 Citations | The presence of slopes in open channel flows affects the flow behavior by causing the flow to take a vertical direction upstream of the obstacle and by localizing recirculation zones at the foot of the downstream wall. |
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