HydPy-D (DAM)¶
The HydPy-D model family implements dams and similar natural and anthropogenic flow barriers.
At the current state of development, all its application models rely
on an adaptive explicit Runge-Kutta method. This integration method
allows for performing simulations with adjustable numerical precision.
However, it works best for continuous differential equations. Hence,
most process equations of base model dam are either continuous by nature
or are “regularisable”, meaning one can smooth their discontinuities by
a degree one considers useful.
Each application model provides a different combination of control capabilities.. Many take “remote locations” into account, for example, to release additional water to the downstream river channel to increase water stages at remote gauges.
All application models are tested and ready for use. However, please note that some improvements in style and structure (e.g. changes in some variable names) might be necessary for the future. At the moment, it is a little hard to pick the correct application model. We will have to find a way to prevent selecting the right model becoming too hard when the set of application models grows. For the moment, the following overview over the first five application models might be helpful:
Does the dam model… |
v001 |
v002 |
v003 |
v004 |
v005 |
|---|---|---|---|---|---|
…calculate the demand at a remote location itself? |
yes |
no |
no |
no |
yes |
…lie in a river upstream of the remote location? |
yes |
yes |
no |
no |
yes |
…tell another model if it cannot supply the remote demand? |
no |
no |
no |
no |
yes |
…discharge to another remote location for flood protection? |
no |
no |
no |
yes |
no |
…ask for additional water supply from a remote location? |
no |
no |
no |
no |
yes |
…allow for discharge from a remote location for flood protection? |
no |
no |
no |
no |
yes |
These five application models are independent implementations, developed
for the forecasting system of the German federal state of Saxony and run
by the Landeshochwasserzentrum (LHWZ). More recently, we added the
application models dam_v006, dam_v007, and dam_v008 on behalf of
the German Federal Institute of Hydrology (BfG). Conceptionally, these
HydPy models correspond the LARSIM models “SEEG” (controlled lake),
“RUEC” (retention basin) and “TALS” (reservoir).
dam_v001 has been the starting point for the development of the
other application models. Hence its documentation is very comprehensive,
and it seems to be a good starting point to become acquainted with any
of the application models prepared so far.
Base model:
Application model:
