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Author Topic: Isothermal surface  (Read 349 times)

fidome787

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Isothermal surface
« on: May 11, 2020, 10:03:17 am »

I am building a model in pyrosim, wherein one particular wall needs to be isothermal at 20°C. Does anyone have an idea as to how to set the wall as an isothermal? (My wall will most likely be an obstruction) Thanks
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Dave McGill

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Re: Isothermal surface
« Reply #1 on: May 11, 2020, 11:14:02 am »

If by Isothermal you mean it remains at a constant temperature, just set its surface as INERT.
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Dave McGill
firemodel.ca

fidome787

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Re: Isothermal surface
« Reply #2 on: May 11, 2020, 11:46:38 am »

Oh, my understanding was if an obstruction has an inert surface, that means it's initial condition would be that its initial temperature is 20°C, however this temperature could change if there is a fire inside the compartment.
Whereas, when a surface is isothermal, it's temperature remains at 20°C, irrespective of a fire.
Am I wrong in my assessment?
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Dave McGill

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Re: Isothermal surface
« Reply #3 on: May 11, 2020, 12:04:50 pm »

Check the FDS Users Guide.
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Dave McGill
firemodel.ca