In the water resources six minute solutions #15, they use the specific force method to solve this problem. Why is the specific force on each side of the hydraulic jump set equal? I was under the impression that energy is lost in a hydraulic jump?
There is no force applied to the fluid and therefore (by Newton's Law), momentum is conserved. The values of the conjugate depths on either side of a hydraulic jump are derived from a statement of equal momentum, not equal energy. Energy is indeed lost in a hydraulic jump, while momentum is conserved.In the water resources six minute solutions #15, they use the specific force method to solve this problem. Why is the specific force on each side of the hydraulic jump set equal? I was under the impression that energy is lost in a hydraulic jump?
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