Hydraulic Structures: Fourth Edition

15.7.4 Still ambient fluid The initial dilution of the effluent Smalong the centreline of the jet issuing from the port may be e ...

SEA OUTFALLS 657 and Sm0.54FD 0.66 5/3 for '0.5FD. (15.41) Smis the minimum dilution occurring along the centreline of the p ...

Sm for y 0 ' (15.45) and BQpg. For small values of y 0 /Dp, the results of Agg and Wakeford are comparable with equations (15. ...

SEA OUTFALLS 659 The frictional loss in the straight pipe of the outfall leading to the dif- fuser is calculated using the Darcy ...

Vp2 1  1 ke ^2 gE (^2)  1/2 (15.48) where E 2  p g 2  p a g 2  (15.49) and the flow rate is Qp2cap2Vp2cdap2(2gE ...

SEA OUTFALLS 661 p 3 andV 3 are respectively the pressure and velocity in the diffuser at the section immediately downstream o ...

and transport them, the diffuser diameter is reduced progressively as shown in Fig. 15.14. An outline of a preliminary outfall d ...

WORKED EXAMPLES 663 (MAFF, 1995): to study the coastal processes in a cell defined by the phys- ical features and sediment trans ...

1.57. pmaxon the bed is given by gd  1030 9.81 8  88.4 103 Nm^2 , h 0  cotanh(1.57)0.37 m. Assume linear distribut ...

WORKED EXAMPLES 665 Worked Example 15.2 At a depth of 20 m, waves of height 1.31 m and period 7 s are observed to travel inshore ...

Second trial.Assume that Ru1.8 m. The average slope is (1.82.56)/(9.0 5  6 5.6)4.36/25.6≈0.17. 1.0160.17(1.38/76.5)^ 1 ...

WORKED EXAMPLES 667 2650 kg m^3. The design wave does not break before reaching the wall, becauseH/d2.17/3.50.620.78, the cri ...

The horizontal part at 8.0 m OD is assumed to be 6 m, which is greater than the crest width given by equation (15.35). The thick ...

WORKED EXAMPLES 669 RUN-UP Peak Irribarren number at the structure p(1/3)(2.17/172.0)^ 0.5 2.7. The correction factor rfrom ...

0.05/(π0.175^2 /4) 2.1 m s^1. A velocity of 2.1 m s^1 is expected to be sufficient to avoid blockage of the ports. Densimetric ...

Brooks, N.H. (1970) Conceptual design of submarine outfalls I. Jet diffusion. Cali- fornia Institute of Technology, W.M. Keck La ...

672 COASTAL ENGINEERING Koh, R.C.Y. and Brooks, N.H. (1975) Fluid mechanics of waste-water disposal in the ocean. Annual Review ...

Van der Meer, J.W. (1987) Stability of breakwater armour layers – Design formu- lae,Coastal Engineering, 11: 219–39. —— (1988) S ...

Chapter 16 Models in hydraulic engineering 16.1 Hydraulic models 16.1.1 General Hydraulics and hydraulic engineering have been m ...

HYDRAULIC MODELS 675 ment of water based systems (Abbott, 1991). Although hydraulics is a central component of hydroinformatics ...