register the mass fraction of species!

HaiDuc

Hi all!

I need help for the following calculation.

Situation:

I have 2 different volumen. The first small one (0,3 m3) contains schwefelhaxefliud (SF6) as fluid and has an overpressure of 50 kPa and the temperature is 1500 K. The other bigger one (10 m3) consits air as fluid and the temperature is 300K. This two volumen are joined by an small area (0,02 m2) havind an interior character. The SF6 will flow through the area into other volumen if the calculation starts. From this time it would be a mixed fluid.

Problem:

I want to register the fraction of air and SF6 separately. That means e.g. I want to know how many fraction of SF6 or air are effused. The result should be a function in term of time.

Has someone an idea to solve this problem.

Thanks a lot

Hai Duc