Hi, im trying to create a mesh with a viscous boundary layer for laminar regine through a pipe system and when i create it with Hex-dominat automatic the results are good but i need heat transfer for the proyect that i’m working on so when i try to create the mesh with hex-dominant parametric the re…

Hi @joaquinhor623 ! So you want to perform a fluid flow analysis and a heat transfer analysis separately if I got that right, correct? The creation of boundary layers in the parametric mesh should be straightforward and I can adapt your settings but unfortunately you deleted the mesh as far as I ca…

Hi @jousefm Sorry that i didn’t explain myself well. What i want is to perfom together both the flow analysis and the heat transfer so it is a kind of solar collector, where a plate (solid 1) is heated and transfer this heat to a pipe system (solid 2), where inside there is water flowing (solid 3)…

Hi @joaquinhor623 ! So we are going to perform a CHT (Conjugate heat transfer) analysis. Let me check that out in the evening! Best, Jousef

Hi @jousefm Yes, CHT. Thank you againg, i’ll wait for your answer, Best, Joaquin

Hi @joaquinhor623 and sorry for the delay! What we need to do first is to decrease the refinement levels and make sure to establish the boundary layer cells first without wasting core hours. On top of that when selecting the tube everything including the inlet/outlet gets selected which we want to…

Hi @jousefm I tried with one simple cilinder in order to try to obtain the boundary layer before continue but the only results that i achieved was this: [Captura] while with the hex-dominant automatic i got this: [Captura2] It is possible to get the boundary layer with the parametric mesh? Than…

Hi Joaquin ( @joaquinhor623 )! Yes of course! Please have a look at this validation case here: Turbulent Pipe Flow . Cheers, Jousef

Hi @jousefm Great! thats what i need. But i can not find the “y+” value to get the mesh that i need. Where do i change this? Best, Joaquin

Hi @jousefm I still don’t achieve it, could you help me with the settings in the cilender examplo that a created? Thank you in advance, Best, Joaquin

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Boundary layer in parametric mesh

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jousefm June 16, 2018, 10:19pm 10

Hi @joaquinhor623!

This is a good tutorial: Generate YPlus Wall Spacing.

Best,

Jousef