EM 1110-2-1100 (Part III)
30 Apr 02
Figure III-2-43.
Nondimensional solution curve for semi-infinite plan view fill area
(22) For the analogous case to the above instance where the planform fill is placed in the area (x < 0) and
maintained at the initial beach width Y in the project area, the solution (for x $ 0) is:
x
y ' Yo erfc
(III-2-37)
2 εt
where the nondimensionalized solution graph has the same nondimensionalized solution as provided earlier
in Figure III-2-34.
(23) A final case is presented for the situation in which groins and fill are implemented together as in Fig-
ure III-2-44. Where the initial fill is placed to the end of the groin, the solution is given by Dean (1984) as:
j
4
2 tan(αb )
2
2R
x
y'w&R 1&
tan (αb ) %
R
R
(2n % 1)π
n'0
(III-2-38)
2 2
(2n % 1) π t
(2n % 1) π x
exp & ε
cos
2R
4R2
The nondimensionalized shoreline solution graph for this situation is provided in Figure III-2-45 for the
parameters W/L = 0.25 and tan (αb) = 0.1.
Longshore Sediment Transport
III-2-73
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