How to assign thermal conductivity at interface between fluid and porous region

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  • Last Post 05 June 2019
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Goenitz posted this 03 June 2019

I have thermal conductivity of material (metal foam=porous), inlet condition and wall condition. How can I assign that thermal conductivity of porous region at interface of porous-fluid region for heat transfer. (green region is interface:Fluid left, Porous right). I have neither temperature at interface, nor heat transfer coefficient nor heat flux.

 

 

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abenhadj posted this 03 June 2019

Please insert instead of attaching screenshots. If you want to add a sort of resistance on that interface just to go the GGI interface and enable "Additional Model" for the heat transfer. Here you will be asked to provide some information to formulate the resistance. 

Best regards,

Amine

Goenitz posted this 03 June 2019

 Sure I will attach in future.

I haven't found the 'Additional model' for heat transfer but 'Additional interface models'. There is not hat transfer option there. Is there any chance that I can use just thermal conductivity of a solid/porous region and a hot fluid transfer energy to it?  

Goenitz posted this 03 June 2019

For solid there is thermal resistance model for heat transfer and thin material model (user can define that material) but for porous there is no such option.

abenhadj posted this 03 June 2019

I am able to use interface models on the solid porous interface.

Best regards,

Amine

Goenitz posted this 03 June 2019

Mine is fluid-porous interface as mentioned in opening question. If you are able to find the option can you attach the image please? 

mines are attached.. One for boundary option and the other for interface option.

Attached Files

abenhadj posted this 05 June 2019

Sorry. This applies only for solid-porous interface if you do not choose side dependent for momentum.

Best regards,

Amine

Goenitz posted this 05 June 2019

Thank you for your time and response. As Interface is very thin region I will consider it as adiabatic because overall, porous medium can interact with fluid in domain* if not at interface.

*in porous domain fluid passing through it, can exchange heat, anyway.

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