Hivel2D users manual
Appendix C
Troubleshooting
Table C1
Problems and Solutions
Problem
Possible Solutions
1. Model won't converge
Try more iterations per time-step.
Reduce time-step.
If lower boundary is migrating away
from solution: First set a tailwater,
wait until jump is nearly gone, then
remove tailwater boundary
condition.
Call for help: be prepared to send
the geometry, hydraulic input,
output, and hot start files.
2. Model keeps filling up (water
Make sure you didn't leave out BO
lines in geometry file. Use BO and
level continuously rises).
not B0 (zero) (Table 1).
3. Converges to a bizarre
Make sure resolution is adequate.
solution.
4. Problems reading hot start file.
Verify that the time is included as
the first line of the file.
Verify the number of lines.
May have to put a carriage return at
the end of the last line of the hot
start file.
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Appendix C Troubleshooting
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