Mixer with addComponent

[dupuypablo]

#Even, det ser ut når jeg bruker en mixer, hvor sammensetning ikke er det samme, den crasher med følgende feil neqsim.util.exception.InvalidInputException: neqsim.util.exception.InvalidInputException: SystemSrkEos:addComponent - Input componentName with value not found in database.
#dvs, når det ikke er felleskomponenter mellom stream1 and stream2, da må mixer addComponent til begge og der crasher den en plass

from neqsim.thermo import fluid
from neqsim import jneqsim
sys1 = fluid('PR78-EoS')
sys2 = fluid('PR78-EoS')
sys1.addComponent("nitrogen", 1)
sys2.addComponent("methane", 1)
stream1=jneqsim.process.equipment.stream.Stream("stream1", sys1)
stream2=jneqsim.process.equipment.stream.Stream("stream2", sys2)
mixer = jneqsim.process.equipment.mixer.Mixer("mixer1")
mixer.addStream(stream1)
mixer.addStream(stream2)
mixer.run()
print("mixed composition: ", mixer.getThermoSystem().getComposition())

[EvenSol]

Thanks, fix propsed here:
#1695

alternative :

from neqsim.thermo import fluid
from neqsim import jneqsim
sys1 = fluid('PR78-EoS')
sys1.addComponent("nitrogen",1)
sys1.addComponent("methane",1)

sys2 = sys1.clone()

sys1.setMolarComposition([1.0, 0])
sys2.setMolarComposition([0, 1.0])

stream1=jneqsim.process.equipment.stream.Stream("stream1", sys1)
stream1.run()
stream2=jneqsim.process.equipment.stream.Stream("stream2", sys2)
stream2.run()
mixer = jneqsim.process.equipment.mixer.Mixer("mixer1")
mixer.addStream(stream1)
mixer.addStream(stream2)
mixer.run()
print("mixed composition: ", mixer.getThermoSystem().getMolarComposition())