Purpose

Model mixing between two gas species.

Steps

1. Enable the gas Mixture option.

   

2. Configure the two gases and their properties, then specify mixture composition at the relevant boundaries.
3. Review the compressibility and time controls before transferring to Solution.

Inputs and units

Input or value	Meaning	Units
Gas composition	Species fractions must sum to one.	Dimensionless fractions
Gas properties	Use the material property units shown in the dialog.	See Materials

Limitations

• This option models a two-gas mixture. Mixture cases use compressible flow and do not allow the incompressible or high-speed flow-type selections.

Related topics

• Flow type
• Materials
• Boundaries
• Iterations