A Semi-Implicit, Three-Dimensional Model for Estuarine ... - USGS
A Semi-Implicit, Three-Dimensional Model for Estuarine ... - USGS
A Semi-Implicit, Three-Dimensional Model for Estuarine ... - USGS
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110 A <strong>Semi</strong>-<strong>Implicit</strong>, <strong>Three</strong>-<strong>Dimensional</strong> <strong>Model</strong> <strong>for</strong> <strong>Estuarine</strong> Circulation<br />
ROOT MEAN SQUARE ERROR, IN PERCENT<br />
AMPLITUDE ERROR, IN PERCENT<br />
10<br />
9<br />
8<br />
7<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
0<br />
−1<br />
30<br />
25<br />
20<br />
15<br />
10<br />
5<br />
0<br />
−5<br />
−10<br />
−15<br />
Leapfrog<br />
Leapfrog-trapezoidal, 1 iteration<br />
Leapfrog-trapezoidal, 4 iterations<br />
0 5 10 15 20<br />
Δ t, IN MINUTES<br />
Figure 5.10. Error measures using the three-level semi-implicit scheme on the hydrograph<br />
test problem <strong>for</strong> different values of the computational time interval (Δt).<br />
Δx = 2,000 feet <strong>for</strong> all simulations. Δx is the size of the computational space interval.
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