Question

For what value of Froude number the jump is steady jump?

(a) F1 = 1

(b) F1 = 1.7 to 4.5

(c) F1 = 4.5 to 9

(d) F1 = 9

This question was addressed to me at a job interview.

My doubt stems from Hydraulic Jump topic in division Diversion Head Works, Hydraulic Jump Usefulness in Irrigation Structure of Irrigation Engineering

Answer 1

Right option is (c) F1 = 4.5 to 9

The explanation: For the value of Froude number from 4.5 to 9, when the performance of the jump is best, when the jump is well balanced and the energy dissipation is from 45 to 70%, then the jump is called a steady jump.