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NEWS
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### Overview Changes in caflood version 120 **(2018 Mar)** ###
1. Major features:
- Abstracted the AsciiGrid to be implementation specific due to the for
hexagonal grid variations to square grids
2. Minor items:
- The primary storage has been migrated from and SVN to a GIT repository git.exeter.ac.uk
- This version is derived from the internal commit 44
- added percentage progress indicator
- inflow volume fix
3. Known missing features & problems:
-
### Overview Changes in caflood version 110 **(2015 April)** ###
1. Major features:
- A second model called WCA2Dv2 is implemented. This model improves
the accuracy of the results while keeping the same computational
performance of the previous model. The time step is calculated
using the formula suggested by Hunters et all and it can be
influenced by the Slope tollerance parameter
- It is possible to choose in the setup file which model to run by
using the "Model Type" item.
- The previous model was re-named WCA2Dv1
- The water level event and the inflow event can be modified to behave
like the analytical solution proposed by Hunters et all.
- Added global infiltration. This is still in beta and need to be tested.
2. Minor items:
- This version is derived from the internal revision 971
- A new command line argument was added 'terrain-info' to compute
only the information (Slope/Number of cells, etc.)
- Updated the code to compile using clang 3.5 and gcc 4.8
- Updated the name of many CA functions.
- The command line argument 'WCA2D' was deprecated. Now we should
use the 'sim' argoment.
- A new command line argument was added 'terrain-info' which is used
to compute only the information of the terrain (Slope/Number of
cells, etc.).
- It is possible to choose in the setup file a pre/processing name
for a simulation. This can be usefull when multiple simulations
have the same pre/processing data like the terrain.
- It is possible to choose in the setup file to print the time steps
used during the simulation in a file.
- The application stops a Windows OS from sleeping when it is executed.
- The application does not wait a keyboard input before ending.
- The header of the time plot was updated to have the correct unit
of measure for the time values, i.e. minutes.
3. Known missing features & problems:
-
### Overview Changes in caflood version 100 **(2014 February)** ###
1. Major features:
- Application that performs a 2D flood modelling using cellular
automata model(s) and it is implemented using the CAAPI.
- There is at the moment one single model implemented WCA2Dv1. This
model can be used using the command line argument "WCA2D". The
reference for this model is the unpublished paper:
Name : CADDIES: A STREAMLINED, WEIGHTED CELLULAR AUTOMATA 2D
INUNDATION MODEL FOR RAPID FLOOD ANALYSIS
Authors : M. Guidolin, A. S. Chen, B. Ghimire, E. Keedwell,
S. Djordjević, D.A. Savić
- It needs the version 100 of the CAAPI.
- The executable takes three arguments:
1) The input directory with all the data.
2) A setup file that drive the simulation.
3) The output directory where the data created is saved
- The data generated by the simulation can be controlled by output
setup files which are indicated in the main setup file. There are
two main types of output, a raster grid and a time/value plot for
selected point. The physical variable that can be output are water
depth (WD), water level (WL) and angular velocity (VEL). The
output raster grid can be produced at specific period of the
simulation time. Furthermore the PEAK value can be generated.
- The time step is adaptive and it is controlled by an alpha factor
which must be set using empirical method.
- The adaptive time step is updated every larger update step.
- It is possible to select a global roughness.
- The model can perform three types of events: rainfall, water level
change, inflow. All these three events can be performed in a
specific area or in all the ground.
2. Minor items:
- This version is derived from the internal revision 801
- The output to console can be activated or deactivated in the setup
file. It is possible to select how often in the simulation time
the output is produced.
- It is possible to check the volumes generated by the various
event and the volume in the domain.
- It is possible to control how pre/post processing is performed.
- It is possible to allow the code to start from a small
computational domain (for example around a inflow source) and
expand it as needed.
- It is possible to ignore the upstream cell that do not show any
further water movement.
- It is possible to update the peak value of a output raster grid at
each time step (slow) or at each update step (fast). The
difference in results is theoretically insignificant.
3. Known missing features & problems:
- The total volume generated by a water level event is not computed.
- The 'Time Start' parameter can be any value, however the simulation
will not load any previous generated output.
- The 'Update DT' parameter cannot have any value over 60
seconds. The value must be a multiple of 60, i.e 30,15.
- The header in the time plot file has the wrong unit of measure for
time value, seconds (s) instead of minutes (min)