Hydraulic Radius | Lecture Note - Edubirdie

University:
Santa Fe College
Course:
PHY 2004 | Applied Physics 1
Academic year:

2024
Views:

476

Pages:

5
Author:

Jabin F.

HYDRAULIC RADIUS R = (wetted area) / (wetted perimeter) = A / P R = By / (B+2y) -> Rectangular channel. for wide Rect. channel. B >> y B+2y ~ B => R = By / B = y R = y -> wide Rect. channel. Hydraulic depth (D) D = (wetted Area) / (Top width) -> Top width. -> width of the channel section at free Surface Net channel width D = A / T • for Rectangular D = By / B D = y for wide rectangular channel. R = D = y flow parameter at a particular section does not change with Time. (1) dV/dt = 0 (2) dQ/dt = 0, dy/dt = 0 flow parameter at a section change with Time. (1) dQ/dt != 0 (2) dV/dt != 0, dy/dt != 0 Variation of flow parameter w.r.t. Space Uniform flow flow parameters at a particular section of channel reach does not Varies w.r.t. Space. (1) dV/dx = 0, dQ/dx = 0 dy/dx = 0 Non-Uniform flow flow parameters at a particular section of channel reach Varies w.r.t Space. (1) dV/dx != 0 dQ/dx != 0 dy/dx != 0

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