1
$\begingroup$

my question is: can I use a RANS simulation to see the effect of mixed/natural convection?

Actually I have also a second question: I would like to do this in Comsol multiphysics, but it seems that it has no model that takes into account turbulence (like k epsilon, Reinolds stress, LES, ecc..). Ps: this could be because I use a pretty old version of the software, but anyway I haven't found documentation about this topic so far.

Thank you for your answers!

$\endgroup$
3
  • $\begingroup$ What are your Rayleigh and Reynolds numbers? $\endgroup$ – Bill Barth Mar 16 '13 at 2:29
  • $\begingroup$ I haven't set the case yet, but would be such as $\frac{Gr}{Re^2} $ would be near 1, to guarantee mixed convection. $\endgroup$ – Lorenzo Nespoli Mar 16 '13 at 7:50
  • 1
    $\begingroup$ I think that you've got to know whether the flow is likely to be turbulent before you can know if RANS is applicable. $\endgroup$ – Bill Barth Mar 22 '13 at 3:56

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.