Heat Flow and Bottom Boundary Condition
From krc
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Revision as of 11:34, 14 April 2020
The bottom boundary condition is set by lbound and TDEEP.
Contents |
Note
By default, the interfaces sets a fixed bottom temperature:
lbound = -1.//180.
Heat Flow
A geothermal heat flux can be set using lbound alone, with the heat flux given in mW/m2:
lbound = 35.
sets a heat flux of 35 mW/m2.
Insulation
lbound = 0
insulates the bottom layer (no flux)
Set Bottom Temperature
The bottom temperature must be set first by TDEEP, then a flag is provided through lbound:
TDEEP = 180. #Bottom temperature set at 180.K lbound = -1//TDEEP
Set the Initial Temperature of all the Layers
TDEEP = 180. #Bottom temperature set at 180.K lbound = -2//TDEEP
All the layers are initially set at TDEEP, and the bottom layer is kept at TDEEP during the run.
Equilibrium
When selecting a lower boundary condition, make sure to verify that the model has been running long enough vs. depth enough vs. at adequate temperatures.
