SOLVED:The volume flow rate over a sharp-crested weir, Q, is commonly expressed in the form Q=f(We, Re, (H)/(Hw)) b √(g) H^(3)/(2) where We is the Weber number defined by We=(ρV^2 H)/(σ) and V is the flow velocity over the weir, σis the surface tension of the fluid, ρis the density of the fluid, H is the depth of fluid over the crest of the weir, and Re is the Reynolds number defined by Re=(ρV H)/(μ) where μis the viscosity of the fluid, Hw is the height of the weir, and b is the length of the w
SOLVED:The volume flow rate over a sharp-crested weir, Q, is commo…
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A rectangular, sharp-crested weir with end contractions is 1.4  m long. How high should it be placed in a channel to maintain an upstream depth of 2.35  m for 0.40  m^3 / s flow? I Q=1.83 L^' H^1 / 2 where L^'=L-0.2 H (due to end contractions). 0.40=(1.83)(1.4-0.2 H)(H)^3 / 2 H=0.30  m P=2.35-0.30=2.05  m (height of weir) | Numerade
A rectangular, sharp-crested weir with end contractions is 1.4  m lon…
Nov 8, 2023
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