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FDS

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FDS#

Fire Dynamics Simulator (FDS), is a computational fluid dynamics (CFD) model of fire-driven fluid flow. FDS solves numerically a form of the Navier-Stokes equations appropriate for low-speed (Ma1 < 0.3), thermally-driven flow with an emphasis on smoke and heat transport from fires. The applications of FDS include the design of smoke handling systems and sprinkler/detector activation studies, as well as reconstruction of residential and industrial fires.

FDS conteplates in its model an hydrodynamics model, a combustion model and a radiation transport model. All are configured by a single input file input_file.fds.

Hydrodynamic Model: solves numerically a form of the Navier-Stokes equations appropriate for lowspeed, thermally-driven flow with an emphasis on smoke and heat transport from fires.

Combustion Model: For most applications, FDS uses a single step, mixing-controlled chemical reaction which uses three lumped species (a species representing a group of species). These lumped species are air, fuel, and products. By default the last two lumped species are explicitly computed. Options are available to include multiple reactions and reactions that are not necessarily mixing-controlled.

Since FDS requires the setting of separate meshes that are attributed to the processors, the user needs to provide the number of cores required to run the simulation. This steps out of the usual structure of the simulators in Inductiva API, where the number of cores is automatically set.

Example#

import inductiva

input_dir = inductiva.utils.download_from_url(
    "https://storage.googleapis.com/inductiva-api-demo-files/"
    "fds-input-example.zip", unzip=True)

fds = inductiva.simulators.FDS()

task = fds.run(input_dir=input_dir,
               sim_config_filename="mccaffrey.fds",
               post_processing_filename="mccaffrey.ssf",
               n_vcpus=1)

task.wait()
task.download_outputs()
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