Learning Forum

[a.y.al-wardi]

I have an ozone chamber with inlets (air coming in) and an outlet where a fan is convecting the mixture (air + ozone) out. 

The fan rating is 40 m3/h. The inlets are set as pressure inlets and struggling with setting the outlet boundary condition.

In this case, what would be the appropriate outlet boundary condition?

How can I set the outlet boundary condition to mimic the fan's action for a eulerian eulerian model setup?

[SRP]

Hi,

You can use mass flow out boundary condition. Please refer to user's guide for more details: 7.4. Boundary Conditions

[a.y.al-wardi]

 

Thank you for your response, I’ll refer to the user’s guide. 

I used the mass flow out boundary condition when I set up the simulation with the species transport and multiphase mixture models. It worked fine in both cases.  However, when I switched it to Eulerian-Eulerian, the mass flow out is no longer one of the options on the drop down menu for the outlet boundary condition hence my confusion. 

 

[SRP]

Hi,

For Eulerian multiphase cases, the mass flow outlet boundary condition should only be used for cases where only one of the phases exits the domain at the boundary. Otherwise, the solution results may be inaccurate.