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Hydraulic jump in a rectangular channel, also known as classical jump, is a natural phenomenon that occurs whenever flow changes from supercritical to subcritical flow. In this transition, the water surface rises abruptly, surface rollers are formed, intense mixing occurs, air is entrained, and often a large amount of energy is dissipated.
The downstream depth should only be modeled until it reaches the conjugate depth of the normal depth, at which point a hydraulic jump will form. The solution presented explains how to solve the problem in a spreadsheet, showing the calculations column by column.
Hydraulic jump characteristics [7] [8] [13] [15] Amount upstream flow is supercritical (i.e., prejump Froude Number) Ratio of height after to height before jump Descriptive characteristics of jump Fraction of energy dissipated by jump [11] ≤ 1.0: 1.0: No jump; flow must be supercritical for jump to occur: none 1.0–1.7: 1.0–2.0: Standing ...
Box jumps: jump onto and off of a large box 18" or higher. [16] Vertical depth jump: starting from the top of a box, jump down and back up as fast as possible. [16] Plyometric push-up (plyo push-up): perform a push up, but exert enough upward force to lift the hands and body off the ground. [16] Broad jump (long jump). Pike jump. [17]
The depth changes abruptly over a comparatively short distance. Rapidly varied flow is known as a local phenomenon. Examples are the hydraulic jump and the hydraulic drop. Gradually-varied flow. The depth changes over a long distance. Continuous flow. The discharge is constant throughout the reach of the channel under consideration. This is ...
H = depth of flow over the crest (or floor) of the inlet (ft) H e = specific energy head in reference to the crest of the inlet, or the head over the crest of the inlet (ft) v a = mean velocity of approach at which the depth H is measured (ft/s) g = 32.16 ft/s 2
Download as PDF; Printable version; ... A jump-off is a sudden death competition in which the tied vaulters attempt the same height, ... (20 cm) in depth. The bottom ...
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