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Simulation with a very high Peclet Number

Posted 12 oct. 2012, 16:44 UTC−4 Porous Media Flow, Studies & Solvers Version 4.2 2 Replies

Lucio Cruz
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Hi there,

I'm working a geothermal problem, when I put the variables to work with the simulation I got a very high Peclet number, then I need to know if it's possible to stabilize the solution, and what is the way to do that..

Thanks for the help.

Lucio
2 Replies Last Post 15 juin 2017, 09:25 UTC−4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 13 oct. 2012, 12:26 UTC−4
Hi

have you checkedfrom the help / doc if the Reynolds and Peclet number are not "Cell ... number" hence based on the mesh average size "h" characterisitic Length and not the model Length, this should change the way you consider these numbers

--
Good luck
Ivar
Hi have you checkedfrom the help / doc if the Reynolds and Peclet number are not "Cell ... number" hence based on the mesh average size "h" characterisitic Length and not the model Length, this should change the way you consider these numbers -- Good luck Ivar
Jalu Naradi
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Posted: 7 years ago 15 juin 2017, 09:25 UTC−4

Hi

have you checkedfrom the help / doc if the Reynolds and Peclet number are not "Cell ... number" hence based on the mesh average size "h" characterisitic Length and not the model Length, this should change the way you consider these numbers

--
Good luck
Ivar


Hi Ivar,

Could you please inform me how to get the mesh average size?
I tried to find it in the mesh setting and only get the maximum and minimum mesh size.

Thank you

[QUOTE] Hi have you checkedfrom the help / doc if the Reynolds and Peclet number are not "Cell ... number" hence based on the mesh average size "h" characterisitic Length and not the model Length, this should change the way you consider these numbers -- Good luck Ivar [/QUOTE] Hi Ivar, Could you please inform me how to get the mesh average size? I tried to find it in the mesh setting and only get the maximum and minimum mesh size. Thank you

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