Standard step method: Difference between revisions

Revision as of 15:06, 14 May 2013

Revision as of 15:45, 14 May 2013

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:<math>H = z+y+\frac{v^2}{2g}</math> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <big>'''Equation 1'''</big><br /><br />

For a given flow rate and channel geometry, there is a relationship between flow depth and total energy. This is illustrated below in the plot of energy vs. flow depth, widely known as an E-y diagram. In this plot, the depth where the minimum energy occurs is known as the critical depth. Consequently, this depth corresponds to a [[Froude Number]] <math>(F_n)</math> of 1. Depths greater than critical depth are considered “subcritical” and have a Froude Number less than 1, while depths less than critical depth are considered supercritical and have Froude Numbers greater than 1. (For more information, see [[Dimensionless Specific Energy Diagrams for Open Channel Flow]].)<br /><br />

:<math>F_n=\frac{v}{(g\frac{A}{B})^{0.5}}</math>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <big>'''Equation 2'''</big><br /><br />