Mass flow rate
 

Hello All,

I have a mass flow rate (0.0468 kg/s) outlet result for a 2D model and need to apply this to a 3D model for inlet mass flow rate boundary. What does this mass flow rate means in term of 3D? How can I use this result and apply to the 3D model?

Thank you

Re: Mass flow rate
 

Was your 2D model axisymmetric? If yes then the mass flow rate is real. Apply directly to the 3D model.

contrast case
 

hello~ everyone

I have a another question about this post

What if I have mass flow rate for 3d and i want to apply that flow rate to

2d axisymmetric casek for reducing computational cost?

Same date for axisymmetric and 3d.
But you can also use velocity inlet, and check the massflow rate (report/)

Dear All, I have simulated a combustion flow in CFX some time ago. It was possible to define a surface which was a wall, but from which some reacting species were inserted into the domain.
This boundary was a wall+source, so that I was able to specify both mass fractions of the various species and the mass flow rate coming in; it was also possible to have a certain heat flux at that boundary. It was one of the parameters calculated during the simulation.

Is there a similar condition in Fluent? 'cause i saw just traditional walls and mass flow inlet boundaries.

If not, is there any other way to make Fluent do what i need?
(which is basically introducing a certain amount of mass from the boundary, with specified mass fractions and calculating the heat flux without imposing it at the beginning).

Thanks a lot

Marta