A Semi-Implicit, Three-Dimensional Model for Estuarine ... - USGS

u VELOCITY COMPONENT,
IN CENTIMETERS PER SECOND
WATER SURFACE ELEVATION,
IN CENTIMETERS
w VELOCITY COMPONENT,
IN CENTIMETERS PER SECOND
28
24
20
16
12
8
4
0
-4
30
25
20
15
10
5
0
-5
-10
0.005
0.000
-0.005
-0.010
Computed
Analytical
-0.015
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
TIME, IN HOURS
Node i = 13, j = 5 (middle of basin)
Node i = 2, j = 5 (west side of basin)
Node i = 2, j = 5, k = 3 (west side of basin, third layer)
Figure 5.24. Computed and analytical solutions for the 3-dimensional (3-D) seiching test problem assuming
an ideal (non-viscous) fluid and using the 3-D, semi-implicit leapfrog scheme for the numerical solution.
A computational time step of 45 seconds was used for the numerical solution.
5. Numerical Experiments 133