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Eawag-AppliedSystemAnalysis / Simstrat

Simstrat - 1D lake model
http://www.eawag.ch/en/department/surf/projects/simstrat/
GNU General Public License v3.0
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Water continuity not fulfilled with density-driven inflow #19

Closed f-baerenbold closed 5 years ago

f-baerenbold commented 6 years ago

If the density driven inflow and the (normal) outflow are balanced at the beginning the water level remains constant, which is good. However, if over 2 years of simulation the level first sinks (by about 0.5 m) and then rises again the water level does not end up exactly at the initial water level. The deviation is 2.4 cm in my case. In case of manual inflow placement, the water level ends up exactly at the initial water level. So to (approximate) method of density-driven inflow seems not to work perfectly or it has an error somewhere.

f-baerenbold commented 6 years ago

Bug solved. Still, the vertical advection is non-zero at the bottom for density-driven inflow placement if the plume goes to the lake bottom. Conceptually, this might be wrong.