Geoscience Reference
In-Depth Information
Section 7.3. The sediment adaptation length was determined by
L
,
in which
t
is the elapsed time in hours and
h
0
is the approach flow depth in meters.
The computational mesh consisted of 43 and 25 points in the transverse and vertical
directions, respectively, and a suitable number of points in the longitudinal direction
depending on the flume length. The plan view of the mesh around a cylindrical pier is
shown in Fig. 7.13. The vertical grid spacing was refined near the bed.
Fig. 7.14 compares the simulated and measured scour holes at a cylindrical bridge
pier for Yanmaz and Altinbilek's Run 3 with a pier diameter (
D
) of 6.7 cm, a sediment
=
min
(
0.4
t
, 7.3
h
0
)
Figure 7.13
Computational mesh near a cylindrical pier (plan view).
Figure 7.14
Measured and simulated scour depth contours (m) at a cylindrical pier for
Yanmaz and Altinbilek's Run 3 at 100min.
