how to turn on the low-Mach approximation?
Posted: Mon Mar 02, 2020 3:50 pm
Hello,
I am a little bit confused about the correct way of setting Code_Saturne to use a Boussinesq approach or a low-Mach approach.
I use v6.0.0. In the GUI, one has the possibility of selecting Incompressible or Compressible flow. I guess that in both cases the Incompressible option has tu be chosen... Then, for the Boussinesq approach, the g*Drho term is added through the cs_user_source_terms subroutine. I am right?
But what about the low-Mach formulation? How can I turn it on?
I am running simulations with multi-species: density varies AS A FUNCTION OF THE SCALAR MASS FRACTION, ENERGY EQUATION IS NOT REQUIRED AND NOT SOLVED (i.e. density is not a function of temperature).
Thank you very much.
Best regards,
Daniele
I am a little bit confused about the correct way of setting Code_Saturne to use a Boussinesq approach or a low-Mach approach.
I use v6.0.0. In the GUI, one has the possibility of selecting Incompressible or Compressible flow. I guess that in both cases the Incompressible option has tu be chosen... Then, for the Boussinesq approach, the g*Drho term is added through the cs_user_source_terms subroutine. I am right?
But what about the low-Mach formulation? How can I turn it on?
I am running simulations with multi-species: density varies AS A FUNCTION OF THE SCALAR MASS FRACTION, ENERGY EQUATION IS NOT REQUIRED AND NOT SOLVED (i.e. density is not a function of temperature).
Thank you very much.
Best regards,
Daniele