Property:Describe numerical limitations
From CSDMS
This is a property of type Text.
W
M
The model might be unstable if the meander bends are too sharp and/or flow parameters are somehow borderline. +
R
The model was designed for laminar to transitional flows, up to 10 cm/s. Under these conditions, the flow velocity solution is approximate but is realistic and stable. +
L
The profiles should not be spaced too closely in order to avoid an unstable saw-tooth longitudinal profile of the river. +
C
T
This model is only tested in rectangle domains, and compared the results with idealized experiments;
Sediment bed state is affected by the initial condition (mainly due to the frictional stess closure in this model). For 2D or 3D runs, it is suggested that first run 1DV to steady or quasi-steady state, and map the 1DV results to 2DV or 3D, in this way, the initial instability of the sediment bed can be avoided. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
This model/component needs more rigorous testing. +
D
Use with high rates of SLR will require additional work on the vegetation rules; currently with both vegetation and high rates of SLR the simple water routing rules are unable to consistently route water to the shoreline. +
C
Usual Python limitations on floating point precision. ODE's are solved on scales much finer than annual, and their performance is monitored. +
N
Wave modules have an automatic grid refinement feature. Circulation modules have two kinds: CFL limited and CFL-free schemes. +
D
With larger DEMs this tool will take longer to run - it takes around half an hour to run with a 1m DEM with 23000 rows and 18000 columns. Documentation is available for guidance. +
K
analytical solution +
Z
X
D
F
W
M
R
D
n/a
Limitations on the method do occur when delta systems consist of only a few islands, then the input dataset of geometric parameters becomes too small for the machine learning methods. +
C
D
relatively mild stability and accuracy constraints (depending on application) due to implicit numerical schemes +
G
O
S
B
uses forward-Euler timestepping, therefore timestep must be small enough to insure numerical stability +
