Environmental Engineering Reference
In-Depth Information
0.6
H1 EXP
H1 SPH
0.5
0.4
0.3
0.2
0.1
0.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Physical time (s)
0.6
H2 EXP
H2 SPH
0.5
0.4
0.3
0.2
0.1
0.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Physical time (s)
0.6
H3 EXP
H3 SPH
0.5
0.4
0.3
0.2
0.1
0.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Physical time (s)
Fig. 3 Experimental and numerical water heights measured at the three probes
that there is an abrupt change in mass at the free surface. Hence, Fig. 3 summarises
the experimental and numerical water heights calculated at the three probes located
before the obstacle (H1, H2 and H3). The blue line corresponds to the experimental
water height data and the red line corresponds to the numerical wave heights. The
water column collapse is observed during the first 2 s. This dam break is clearly
shown by the probe at H3, where the water level decreases during this period and
by the other probes where the water arrives sequentially (first at H2 and then at H1).
After 1.75 s the reflected water wave moves to the right after hitting the left wall. The
reflected wave hits the right wall and a second incoming wave hits the obstacle for
a second time on the right side (a second maximum in the water level is detected by
H3 at 3.8 s, later by H2 at 4.6 s and by H1 at 4.8 s). The SPH results reproduce very
well the dam evolution observed in the experiment.
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