Fixed Gradient boundary condition in CFD (OpenFOAM) | Computational Fluid Dynamics

[@punitkannar3656]

Awesome

[@abhishekgade3604]

Thank you!!!

[@hebaalaaeldin355]

​@abhishekgade3604 Thanks for the video, may I ask you about a problem I am facing in a chtmultiregionfoam case? I am trying to apply wall heat flux using fixedGradient boundary condition but it works as zeroGradient and same thing happens if I use externalwallheatfluxtemperature bc (also works as zeroGradient), do you have any idea what may cause this?

[@antoine1407]

very useful video, thank you. Could you make a video on preconditioners for compressible flows?

[@abhishekgade3604]

Thanks. Sure will make it as soon as I collect all the necessary information. It might take time although.

[@antoine1407]

@@abhishekgade3604 cheers! It would be very useful even some programming through openFOAM! Thanks again for such incredible videos :)

[@ronantheaccuser1481]

I want to vary gradient accross the boundary....is there any way for that? My gradient is a function of x cordinate

[@hughtong5551]

I am still a little confuse about the IMPLICIT boundary. Can I say that a boundary is implicit for the varaible is not direclty given in BC, instead it is calculted when assembling the matrix?