PyroSim read the FDS file to get some problem

[sanjichen]

Hello all,

I found some problem when i used PyroSim to read the FDS file that called "pressure_rise".

The original record was

&MISC SURF_DEFAULT='WALL', STRATIFICATION=.FALSE. /

But PyroSim showed me it unknown property,STRATIFICATION.

How could I use the parameter "STRATIFICATION" in PyroSim?

Thanks to the help.

[Charlie Thornton]

To turn off STRATIFICATION in PyroSim, you will need to add the following line to the Additional Records section:

Code:

&MISC STRATIFICATION=.FALSE. /

This can be done with any unsupported MISC namelist setting.

[sanjichen]

thanks to help. 

sorry, i have another question.

&SURF ID='WALL', ADIABATIC=.TRUE. /
&SURF ID='BLOW', MASS_FLUX(0)=0.1, RAMP_MF(0)='blow', ADIABATIC=.TRUE. /
&RAMP ID='blow',T= 0.,F=0. /
&RAMP ID='blow',T= 1.,F=1. /
&RAMP ID='blow',T=60.,F=1. /
&RAMP ID='blow',T=61.,F=0. /

When u want to add new surface, u must be to chose the type. But u chose the type is "Supply", u couldn't chose this type-"ADIABATIC".

So,what should i set to do both "supply" and "adiabatic" at the same time?

Thanks to the help!!!

[Charlie Thornton]

You want to create a surface that both blows air into the model and has zero net heat transfer? My understanding is that the combination of these options will either produce and error or unspecified results. However, I haven't tested it, so I really don't know what you'll get.

To work around PyroSim's prevention of the ADIABATIC option in a blower surface:

1. Create your model.
2. Copy the records for your BLOW surface and any referencing RAMPs and OBSTs to the Additional Records section.
3. Delete from PyroSim the SURF, RAMPs, and OBSTs that you've copied to Additional Records
4. Add the ADIABATIC flag to the BLOW surface in Additional Records - just as you've done in your post.
5. Run FDS

Please post any error messages or results you get. I'd like to know how this ends.