[sparta-users] Mixture Command - Mass or Mole Fraction

[Woode, B. [U. (DS) <Bry...@ng...>]

Hello SPARTA Users,

For the mixture command, does the "frac" keyword specify the mass fraction or mole fraction? The manual says "The frac keyword sets a per-species attribute for individual species in the mixture. Each species has a relative fractional density, such as 0.2, meaning one out of 5 particles is that species", but there is no mention of whether this should be the mole fraction or not.

Any insights?


Respectfully,



Bryan Woode | Modeling & Simulation Systems Engineer

Northrop Grumman Corporation | Space Systems

O: 385-442-0669 | Bry...@ng...<mailto:Bry...@ng...>