In a lined rectangular canal, the Froude number of incoming

In a lined rectangular canal, the Froude number of incoming flow is 3.0. A hydraulic jump forms when it meets the pool of water. The depth of flow after the jump formation is 1.51 m. Froude number of flow after the hydraulic jump is

y₂ = 1.51
Fr₁ = 3

y₂ =	y₁	[-1 + √1 + 8 + 8Fr₁²]
	2

⇒ 1.51 =	y₁	[-1 + √1 + 8 + 8 × 3²]
	2

∴ y₁ = 0.4

y₁ =	y₂	[-1 + √1 + 8Fr₂²]
	2

⇒ 0.4 =	1.51	[-1 + √1 + 8Fr₂]
	2

∴ Fr₂ = 0.41