[niyas]

Greetings,

I'm currently engaged in a numerical simulation focused on ethylene/air combustion within openFoam version 6. I have a couple of inquiries that I hope someone can assist with:

Inside the '0/C2H4 folder, I've come across a certain line.

dimensions      [0 0 0 0 0 0 0];

internalField   uniform 0.1111111;

Could someone clarify whether this pertains to mass fraction or mole fraction, or if there's a way to express it as a percentage?

To achieve a 50:50 ratio of C2H4 and H2, is it sufficient to create a new file labeled '0/H2' and specify the H2 content in terms of either mass fraction or mole fraction? Are there any specific considerations or precautions I should be aware of?

Your insights and guidance would be greatly appreciated.