84
Coastal Engineering: Theory and Practice
Similarly, longshore current for T = 6 sec is calculated and the results
are plotted for comparison in the figure below.
Problem IV
Find the net sédiment transport for the data given below.
MONTH J an Feb Mar Apr May Jun
Jul Aug Sep Oct Nov Dec
H0(m)
1.5 1.7 1.5 1.0 1.2
2.5
2.8
2.0
2.0
1.5 0.8 1.2
T
7
7
7
7
7
7
7
7
7
7
7
7
ao
50
45
35
15
15 -45 -50 -30 -35 -45
20
20
Solution
• Pis = pg/W *HbxHbxCbx sin(2a6), Hb = Ho/3.33 [(H0/L0)]1/3
• db = Hb/0.78, Cb = Lb/T, sina0/sinab = Co/Cb
• Q (eu. m/month) = 1290/12 (cu.m-s/N-months) x Pia (J/m-s)