search

firemodels / fds

Fire Dynamics Simulator
https://pages.nist.gov/fds-smv/
Other
631 stars 612 forks source link

Obstructions disappear when simulation starts #12801

Closed mcgratta closed 3 months ago

mcgratta commented 3 months ago

Discussed in https://github.com/firemodels/fds/discussions/12800

Originally posted by **nsarifds** April 15, 2024 Hello everyone, I have posted some pictures to describe my problem. At image 1 you can see all of my cable targets setup in Pyrosim. Image 2 is the beginning of the simulation, all my obstructions have disappeared. Image 3 is a slice of the temperature, there the obstructions are visible through the different temperature gradient. At this temperature these obstructions should have ignited. Image 4 is the HRR in the simulation volume, it is equal to the fire's HRR, therefore there was no ignition of the cables. Any ideas what is happening? This is the FDS version just before the release of 6.9.0. ![1](https://github.com/firemodels/fds/assets/161325698/8c839475-dbf7-4ac7-bf97-511a2b7fc63f) ![2](https://github.com/firemodels/fds/assets/161325698/278992d3-b9e8-46a6-bb3f-e7258cef150d) ![3](https://github.com/firemodels/fds/assets/161325698/9f756a06-10b2-4d18-a936-32a6eeed8f4c) ![4](https://github.com/firemodels/fds/assets/161325698/04b26899-94a9-468e-8135-846d788951ec)
mcgratta commented 3 months ago

I added an ERROR message if an OBST is given BULK_DENSITY and zero volume.