Fire propagation simulation based on the Rothermel equations, following closely the implementation of FireStation - Lopes et. al (2002). The purpose of this package is to provide an easy and modern framework for testing and developing fire propagation and fuel parameter models, and to support future scientific research in these fields.
This project requires Python >= 3.8 and pip. The installation process is automated and all the dependencies are
installed if not yet available.
It is always recommended that you use a virtual environment. First create it:
python -m venv venv
# or
python3 -m venv venv
And finally activate it:
# Unix
source ./venv/bin/activate
# or
# Windows PowerShell
.\venv\Scripts\Activate.ps1
After the environment is set up and activated, this package can then be easily installed. Anytime you wish to use this package, you should activate the respective environment.
First clone the repository:
git clone https://github.com/PyFireCoimbra/PyFireStation.git
And then install the package using pip:
python -m pip install -e PyFireStation
# or
python3 -m pip install -e PyFireStation
After installation, the fire propagation simulation can be run by simply calling pyfirestation. By default, this
package expects the input files to be in the FireStation-compatible format, placed in a folder named FireInput in
current working directory. One can also specify the location of the input files by passing their path as arguments.
Run pyfirestation -h for more information.
$ pyfirestation -h
usage: pyfirestation [-h] [-c PATH] [-i PATH] [-w PATH] [-t PATH] [-f PATH] [-m PATH] [-d PATH] [-o PATH]
PyFireStation fire propagation simulation.
options:
-h, --help show this help message and exit
Files:
Path to data files. Can be relative (with respect to `--work-dir`) or absolute.
For absolute paths, the `--work-dir` argument is ignored.
-c PATH, --control PATH
Propagation simulation control parameters.
-i PATH, --ignition PATH
Ignition cells for propagation simulation.
-w PATH, --wind PATH Nuatmos Input/Output file.
-t PATH, --terrain PATH
Terrain height ASCII raster.
-f PATH, --fuel-distr PATH
Fuel distribution ASCII raster.
-m PATH, --fuel-models PATH
Fuel models file.
General:
General simulation parameters.
-d PATH, --work-dir PATH
Working directory.
-o PATH, --output PATH
Output path of file with results.
The provided package and subpackages can be used for building custom applications. After installation, one can use the usual Python import system:
from pyfirestation.rothermel import FuelModel
fuel_model = FuelModel(heat_content_dead=22700.0,
heat_content_alive=22700.0,
oven_dry_fuel_load_alive=0.6,
oven_dry_fuel_load_dead_1h=0.1,
oven_dry_fuel_load_dead_10h=0.1,
oven_dry_fuel_load_dead_100h=0.1,
fuel_depth_alive=1.4,
fuel_depth_dead=1.4,
fuel_moisture_alive=0.6,
fuel_moisture_dead_extinction=0.4,
fuel_moisture_dead_1h=0.1,
fuel_moisture_dead_10h=0.1,
fuel_moisture_dead_100h=0.1,
flame_length=4.0,
surface_area_to_volume_ratio_alive=6000.0,
surface_area_to_volume_ratio_dead_1h=6000.0)
print(fuel_model.rate_of_spread_o)import numpy as np
from pyfirestation import grids
# Read the files containing the X and Y coordinates for the grid
cx = np.read("cx.npy") # Size M
cy = np.read("cy.npy") # Size N
# Read the arrays containing the grid data
terrain_array = np.read("terrain.npy")
wind_speed_array = np.read("wind_speed.npy")
wind_height_array = np.read("wind_speed.npy")
fuel_array = np.read("fuel.npy")
# Create the data grids
fuel_grid = grids.FuelGrid(terrain_array, cx=cx, cy=cy)
terrain_grid = grids.TerrainGrid(terrain_array, cx=cx, cy=cy)
wind_grid = grids.WindGrid(wind_speed_array, wind_height_array, cx=cx, cy=cy)
# Create the simulation grid
simulation_grid = grids.SimulationGrid(fuel_grid=fuel_grid,
terrain_grid=terrain_grid,
wind_grid=wind_grid)-
João Aveiro (@joao-aveiro)
-
Daniel Neves (@danielneves1)
-
Jaime Silva ([email protected])
pyfirestation is available under the GNU GPLv3 license. See the LICENSE for more info.