Simulating Pool Fire (Urgent Help Needed)

[Niazi]

I am trying to simulate pool fire (Propane) to see the effect of radiation on injury to people near the pool fire. I am using pyrosim for this. I have made the model but I am not able to simulate  pool fire.

How can i ignite the pool fire except using HRRPUA? 

Right now, i am igniting fire using a specified vent with HRRPUA. 

If somebody can guide me how to model pool fire, i will be grateful. 

The input to the model is this. 

&MESH ID='Mesh01', IJK=40,36,25, XB=0.0,80.0,0.0,70.0,0.0,50.0/

&REAC ID='HEPTANE',

      FYI='NIST NRC FDS5 Validation',

      FUEL='REAC_FUEL',

      FORMULA='C7H16',

      CO_YIELD=0.006,

      SOOT_YIELD=0.015/

&SURF ID='Surface04',

      COLOR='RED',

      HRRPUA=800.0/

&OBST XB=0.0,80.0,0.0,70.0,0.0,0.0, ALLOW_VENT=.FALSE., SURF_ID='INERT'/ floor

&OBST XB=21.0,38.0,11.0,14.0,0.0,2.0, SURF_ID='INERT'/ Obstruction

&OBST XB=21.0,38.0,16.0,19.0,0.0,2.0, SURF_ID='INERT'/ Obstruction

&OBST XB=21.0,38.0,22.0,25.0,0.0,2.0, SURF_ID='INERT'/ Obstruction

&OBST XB=21.0,38.0,28.0,31.0,0.0,2.0, SURF_ID='INERT'/ Obstruction

&OBST XB=14.0,16.0,14.0,16.0,0.0,6.0, SURF_ID='INERT'/ Obstruction

&OBST XB=14.0,16.0,23.0,25.0,0.0,6.0, SURF_ID='INERT'/ Obstruction

&OBST XB=14.0,16.0,32.0,34.0,0.0,6.0, SURF_ID='INERT'/ Obstruction

&OBST XB=42.0,47.0,14.0,20.0,0.0,3.0, SURF_ID='INERT'/ Obstruction

&OBST XB=42.0,47.0,22.0,28.0,0.0,3.0, SURF_ID='INERT'/ Obstruction

&OBST XB=51.0,60.0,14.0,22.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=51.0,60.0,26.0,32.0,0.0,3.0, SURF_ID='INERT'/ Obstruction

&OBST XB=42.0,59.0,44.0,60.0,0.0,9.0, SURF_ID='INERT'/ Obstruction

&OBST XB=48.0,53.0,50.0,54.0,9.0,30.0, SURF_ID='INERT'/ Obstruction

&OBST XB=11.0,12.0,44.0,46.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=16.0,17.0,44.0,46.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=21.0,22.0,44.0,46.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=26.0,27.0,44.0,46.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=31.0,32.0,44.0,46.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=11.0,12.0,58.0,60.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=16.0,17.0,58.0,60.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=21.0,22.0,58.0,60.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=26.0,27.0,58.0,60.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=31.0,32.0,58.0,60.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=31.0,32.0,48.0,50.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=31.0,32.0,54.0,56.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=11.0,12.0,54.0,56.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=11.0,12.0,48.0,50.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=12.0,31.0,45.0,59.0,5.0,15.0, SURF_ID='INERT'/ Obstruction

&OBST XB=36.0,40.0,35.0,40.0,0.0,0.2, SURF_IDS='Surface04','INERT','INERT'/ Obstruction

&VENT SURF_ID='OPEN', XB=0.0,80.0,0.0,0.0,0.0,50.0/ Vent01

&VENT SURF_ID='OPEN', XB=80.0,80.0,0.0,70.0,0.0,50.0/ Vent02

&VENT SURF_ID='OPEN', XB=0.0,80.0,70.0,70.0,0.0,50.0/ Vent03

&VENT SURF_ID='OPEN', XB=0.0,80.0,0.0,70.0,50.0,50.0/ Vent04

&VENT SURF_ID='OPEN', XB=0.0,0.0,0.0,70.0,0.0,50.0/ Vent

&SLCF QUANTITY='TEMPERATURE', PBZ=10.0/

&SLCF QUANTITY='RADIATION LOSS', PBZ=12.0/

[Randy McDermott]

Your grid resolution in Z is 2 m (50/25) and your OBST with the burner is 0.2 m.  Try adding THICKEN=.TRUE. to the OBST line with the Surface04.  Or check the box in Pyrosim.

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[Kevin]

Your case runs for me. What is the problem?

[Niazi]

Dear Kevin, in the above code, i just created fire by setting HRRPUA. 

Now, i am trying to create fire by specifying MLRPUA. But I am not able to get the result. Could you please have a look at my code and tell me what I am doing wrong?

Here is the code.

&MESH ID='Mesh01', IJK=40,36,25, XB=0.0,80.0,0.0,70.0,0.0,50.0/

&REAC ID='LNG',

      FUEL='REAC_FUEL',

      FORMULA='C1H4',

      SOOT_YIELD=0.02,

      HEAT_OF_COMBUSTION=5.0E4,

      IDEAL=TRUE/

&DEVC ID='temperature ', QUANTITY='TEMPERATURE', XYZ=25.0,40.0,8.0, ORIENTATION=0.0,0.0,0.0/

&SURF ID='LNG Pool',

      RGB=0,51,51,

      MLRPUA=0.067,

      RAMP_Q='LNG Pool_RAMP_Q',

      COLOR=YELLOW,

      TMP_INNER=-165,

      THICKNESS=0.1/

&RAMP ID='LNG Pool_RAMP_Q', T=0.0, F=0.0/

&RAMP ID='LNG Pool_RAMP_Q', T=1.0, F=1.0/

&SURF ID='iron wall',

      COLOR='GRAY 80',

      ADIABATIC=.TRUE.,

      THICKNESS=0.1/

&SURF ID='WIND',

      RGB=255,16,221,

      VEL=2.0,

      PROFILE='ATMOSPHERIC',

      PLE=0.5/

&OBST XB=0.0,80.0,0.0,70.0,0.0,0.0, RGB=211,240,1, ALLOW_VENT=.FALSE., SURF_ID='INERT'/ floor

&OBST XB=21.0,38.0,11.0,14.0,0.0,2.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=21.0,38.0,16.0,19.0,0.0,2.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=21.0,38.0,22.0,25.0,0.0,2.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=21.0,38.0,28.0,31.0,0.0,2.0, SURF_ID='INERT'/ Obstruction

&OBST XB=14.0,16.0,14.0,16.0,0.0,6.0, SURF_ID='INERT'/ Obstruction

&OBST XB=14.0,16.0,23.0,25.0,0.0,6.0, SURF_ID='INERT'/ Obstruction

&OBST XB=14.0,16.0,32.0,34.0,0.0,6.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=42.0,47.0,14.0,20.0,0.0,3.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=42.0,47.0,22.0,28.0,0.0,3.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=51.0,60.0,14.0,22.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=51.0,60.0,26.0,32.0,0.0,3.0, SURF_ID='INERT'/ Obstruction

&OBST XB=42.0,59.0,44.0,60.0,0.0,9.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=48.0,53.0,50.0,54.0,9.0,30.0, SURF_ID='INERT'/ Obstruction

&OBST XB=11.0,12.0,44.0,46.0,0.0,5.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=16.0,17.0,44.0,46.0,0.0,5.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=21.0,22.0,44.0,46.0,0.0,5.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=26.0,27.0,44.0,46.0,0.0,5.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=31.0,32.0,44.0,46.0,0.0,5.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=11.0,12.0,58.0,60.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=16.0,17.0,58.0,60.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=21.0,22.0,58.0,60.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=26.0,27.0,58.0,60.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=31.0,32.0,58.0,60.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=31.0,32.0,48.0,50.0,0.0,5.0, SURF_ID='iron wall'/ Obstruction

&OBST XB=31.0,32.0,54.0,56.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=11.0,12.0,54.0,56.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=11.0,12.0,48.0,50.0,0.0,5.0, SURF_ID='INERT'/ Obstruction

&OBST XB=12.0,31.0,45.0,59.0,5.0,15.0, SURF_ID='INERT'/ Obstruction

&OBST XB=24.0,40.0,35.0,38.8889,0.0,7.10543E-15, SURF_ID='iron wall'/ Obstruction

&VENT SURF_ID='OPEN', XB=0.0,80.0,0.0,0.0,0.0,50.0/ Vent01

&VENT SURF_ID='OPEN', XB=80.0,80.0,0.0,70.0,0.0,50.0/ Vent02

&VENT SURF_ID='OPEN', XB=0.0,80.0,70.0,70.0,0.0,50.0/ Vent03

&VENT SURF_ID='OPEN', XB=0.0,80.0,0.0,70.0,50.0,50.0/ Vent04

&VENT SURF_ID='WIND', XB=0.0,0.0,0.0,70.0,0.0,50.0/ Vent

&VENT SURF_ID='LNG Pool', XB=24.0,40.0,35.0,38.8889,0.0,0.0, OUTLINE=.TRUE./ Vent12

[Randy McDermott]

When I run your code I get this error:

ERROR: DEVC temperature.  All components of ORIENTATION are zero. (CHID: test)

STOP: FDS was improperly set-up (CHID: test)

I removed the ORIENTATION parameters from the DEVC line and the case runs fine.

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[Niazi]

Dear Randy, thanks for your reply. First, its not running in pyrosim. When i try to run it on pyrosim, it just completed with opening of smoke view.

When i tried to run it separately on FDS6, yes it run but pool isn't burning. There is no any smoke and flame generated due to this pool fire. 

[Randy McDermott]

This is what I get when I run the model.

To view this discussion on the web visit https://groups.google.com/d/msgid/fds-smv/24dab8b2-100d-47fd-b839-a955f76b2f04%40googlegroups.com.

[Niazi]

Then what could be the problem? I am running the same case using FDS6 but i am not able to see flame and smoke. 

[Randy McDermott]

Exactly what version of FDS are you using?

On Sat, Feb 13, 2016 at 7:36 AM, Niazi <ukn...@gmail.com> wrote:

Then what could be the problem? I am running the same case using FDS6 but i am not able to see flame and smoke. 

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[Niazi]

I installed the latest one around one month ago. I have also installed FDS5. 

Can it be due to installing of both versions?

But this code is also not running on Pyrosim. 

[Randy McDermott]

When you type 'fds' at the command prompt and hit enter what does it say?

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[Niazi]

Kindly have a look at the attached image. 

 

[Randy McDermott]

Here is my result from running 6.3.2 on Windows with Smokeview 6.3.3.

I guess I would suggest a fresh install of the 6.3.2 bundle.  Just do it from the fds-smv website:

http://firemodels.github.io/fds-smv/downloads.html

On Sat, Feb 13, 2016 at 7:51 AM, Niazi <ukn...@gmail.com> wrote:

Kindly have a look at the attached image. 

 

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[dr_jfloyd]

Pyrosim does not run the version of FDS installed by the Github installer in program files\firemodels\FDS6\bin. Pyrosim runs the version it installs in Program Files\PyroSim ####\fds (where #### is the year of Pyrosim Release). It is possible Pyrosim is running a different version than what is reported when you type fds at a command prompt. You can see what version was installed by Pyrosim by executing the fds version in the Pyrosim directory.