Hydraulic Structures: Fourth Edition

Worked Example 4.2 The inflow to a reservoir has an average sediment concentration of 800 ppm. If the volume of the reservoir is ...

Worked examples ForH1.50 m, H/Hd1.50/2.800.536; by interpolation between 0.578 (H/Hd0.05) and 0.75 (H/Hd1),Cd0.666 and Q5 ...

From equation (4.44) for S/q1/50.1919 (0.16), C0.72260.743 log 0.19190.18919%, ya0.320 m. From equation (4.45) for S/q2 ...

REFERENCES 239 Note that Hall’s equation is really applicable for spillways with a ratiob/y 0 5, where the wall-generated turbu ...

Bradley, J.N. (1952) Discharge Coefficients for Irregular Overfall Spillways, Engin- eering Monographs No. 9, Bureau of Reclamat ...

REFERENCES 241 Gisonni, C. and Hager, W.H. (1999) Studying flow at tunnel bends, Hydropower and Dams, No. 2: 76–9. Gosschalk, E. ...

and throughflow – the Australian experience. Transactions of the Institution of Engineers of Australia, Civil Engineering, 79 (3 ...

REFERENCES 243 Thomas, H.H. (1976) The Engineering of Large Dams, Wiley, Chichester. US Army Corps of Engineers (2002) HEC-RAS R ...

Chapter 5 Energy dissipation 5.1 General Energy dissipation at dams and weirs is closely associated with spillway design, partic ...

ENERGY DISSIPATION ON SPILLWAYS 245 on the spillway surface; in a free-falling jet; at impact into the downstream pool; in the ...

 E e     1!^2. (5.3) For a ratio of the height Sof the spillway crest above its toe (or in case of a spillway with a f ...

ENERGY DISSIPATION ON SPILLWAYS 247 economies where geological and morphological conditions are favourable, and particularly whe ...

The combined energy loss in the first three phases of energy dissipa- tion can be expressed from a velocity coefficient !1–3, wh ...

ENERGY DISSIPATION ON SPILLWAYS 249 The key parameters for the flip bucket design are the approach flow velocity and depth, the ...

The stilling basin depth is then given by yy 2 y 0 y 2 y 0 (5.9) and the length by LK(y 2 y 1 ) (5.10) whereandKare ...

STILLING BASINS 251 Fory 2 y 0 no stilling basin is necessary, and a horizontal apron protecting the river bed downstream of th ...

where
is the increased value of the Coriolis coefficient reflecting the high degree of turbulence and uneven velocity distribut ...

STILLING BASINS 253 5.1). For k5 there is practically no cavitation danger; for k3.5 there is a 2% probability of the occurren ...

Farhoudi and Narayanan (1991) investigated the forces acting on slabs of different lengths and widths beneath a hydraulic jump g ...

STILLING BASINS 255 levels than conventional hydraulic jump basins and, in the case of gated spillways, symmetrical gates operat ...