![](/assets/images/picto-drapeau-france-3a76576a5d60a512053b4612ab58dae5.png)
11. Free surface flows
Consider a liquid (water) flowing through a channel whose length is long compared to the cross-sectional dimensions of the prismatic cross-section, and whose walls are of the same type along its length. The pressure is uniform over the free surface (atmospheric pressure). Flow can be varied in the direction of flow and is assumed to be always turbulent. In a real flow, the walls are not flat, and their irregularities on a large scale induce weak secondary currents superimposed on the main flow, which will be the outflow of the unidirectional motion taken into account. As a first approximation, we'll assume that velocity is uniform in a given section and equal to the flow velocity: figure 32 shows the velocity distribution...
Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference
This article is included in
Physics and chemistry
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Free surface flows
References
Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference