The equation relating the pre-and post-hydraulic jump flow depths for rectangular channel is given by
Assume standard nomenclature of the terms used above.
1
\(\frac{{{y_1}}}{{{y_2}}} = \frac{{ - 1 + \sqrt {1 + 8Fr_1^2} }}{2}\)
2
\(\frac{{{y_1}}}{{{y_2}}} = \frac{{ + 1 + \sqrt {1 + 8Fr_1^2} }}{2}\)
3
\(\frac{{{y_2}}}{{{y_1}}} = \frac{{ + 1 + \sqrt {1 + 8Fr_1^2} }}{2}\)
4
\(\frac{{{y_2}}}{{{y_1}}} = \frac{{ - 1 + \sqrt {1 + 8Fr_1^2} }}{2}\)