Fundamentals course Test Run lesson example errors

[bryanwrc]

I've just downloaded the latest Pyrosim (rev 2023.3.1312) and been going through the Pyrosim Fundamentals course with trying to replicate the first test run model. I get a REAC error. The first example is a mattress spring box fire using the SFPE WOOD-OAK as the reaction, and it creates a REAC_FUEL species, which is not in the FDS database. I get an warning/error when I try to run the simulation saying 'reduce molecular weight or define fuel specific heat' and it aborts.

In the species properties for REAC_FUEL I switch from 'chemical formula' to 'molecular weight' and lower it from 29 to 28 g/mol.

I get a ERROR: REAC .. with the following output
Starting FDS ...

MPI Process 0 started on MSI

Reading FDS input file ...

WARNING: SPEC REAC_FUEL is not in the table of pre-defined species. Any unassigned SPEC variables in the input were assigned the properties of nitrogen.

ERROR: REAC, Not enough carbon in the fuel for the specified CO_YIELD, SOOT_YIELD, and/or HCN_YIELD (CHID: tutorial_ex_t3)
forrtl: severe (157): Program Exception - access violation
Image PC Routine Line Source
fds_openmp.exe 00007FF61316DA5E Unknown Unknown Unknown
fds_openmp.exe 00007FF6130E16E7 Unknown Unknown Unknown
fds_openmp.exe 00007FF612D6F431 Unknown Unknown Unknown
fds_openmp.exe 00007FF612D2FEEE Unknown Unknown Unknown
fds_openmp.exe 00007FF6136A5AA0 Unknown Unknown Unknown
KERNEL32.DLL 00007FFB4CBC257D Unknown Unknown Unknown
ntdll.dll 00007FFB4E56AA58 Unknown Unknown Unknown
[runfds.exe] subprocess exit: 157

tutorial ex t3.psm.zip

[rmcdermo]

You've uploaded your Pyrosim file. On this forum we need the .fds file in order to help you. You are also welcome to submit your question to the Pyrosim user support.

https://support.thunderheadeng.com/pyrosim

[rmcdermo]

That input file runs fine with the latest FDS. You can download it here.

What version of FDS is being print out in your command shell?

[bryanwrc]

It was FDS-6.8.0-0-g886e009-release, the release that came with the Pyrosim package.

I downloaded the fds/smv package and now have the pyrosim point to it. It is using FDS-6.9.0-0-g6339569-release

I'm still getting Pyrosim errors, and ignored the warnings. Here is the fds file and output.

I don't see any smoke from this simulation.

tutorial_ex_1 fds out.zip

[rmcdermo]

Something wrong with this file when I try to unzip it. To upload, just copy your casename.fds file to casename.txt and upload it.

But, first, the link I pointed you to is for FDS 6.9.1, which we just released yesterday. Please try that, as it is what I am using to test, and it runs fine for me.

Are you visualizing with Pryosim or Smokeview? If Smokeview, then you need to load 3D Smoke (right click >> load >> 3D smoke). If Pyrosim, then you need to contact Thunderhead at the link I gave above.

[bryanwrc]

I downloaded the newest version.
I was able to visualize the results in pyrosim and SMV, I just needed to click on 'show' for 3D Smoke in pyrosim.
This thread can be marked as resolved. Thank you.
tutorial_ex_1.fds.txt
tutorial_ex_1 out.txt