which model to simulate two gases flow fraction

Martin_Sz · August 29, 2021, 04:38

Hello
Which model is the simplest to simulate gas flow defined by fraction

I have two inlets
first inlet - pure nitrogen 100%
second inlet - nitrogen 80 %, hydrogen 20%

which model to make simplest analysis ??
multiphase - vof or mixture ???
maybe turn on species ???

Best regards

LoGaL · August 29, 2021, 05:15

Use Species transport
Mixing of two gases is not multiphase

ranxiaoran · August 29, 2021, 21:45

Quote:

Originally Posted by Martin_Sz

Hello
Which model is the simplest to simulate gas flow defined by fraction

I have two inlets
first inlet - pure nitrogen 100%
second inlet - nitrogen 80 %, hydrogen 20%

which model to make simplest analysis ??
multiphase - vof or mixture ???
maybe turn on species ???

Best regards

Using species model. vof is applied to different phases such as water(liquid) and N2(gas). Species is applied to the same phases such as h2 and N2

Martin_Sz · August 30, 2021, 01:17

thanks very much for answers
best regards

August 29, 2021, 04:38	which model to simulate two gases flow fraction	#1
Martin_Sz Senior Member Marcin Join Date: May 2014 Location: Poland, Swiebodzin Posts: 232 Rep Power: 13	Hello Which model is the simplest to simulate gas flow defined by fraction I have two inlets first inlet - pure nitrogen 100% second inlet - nitrogen 80 %, hydrogen 20% which model to make simplest analysis ?? multiphase - vof or mixture ??? maybe turn on species ??? Best regards __________________ Quick Tips and Tricks, Tutorials FLuent/ CFX (CFD) https://howtooansys.blogspot.com/

August 30, 2021, 01:17		#4
Martin_Sz Senior Member Marcin Join Date: May 2014 Location: Poland, Swiebodzin Posts: 232 Rep Power: 13	thanks very much for answers best regards __________________ Quick Tips and Tricks, Tutorials FLuent/ CFX (CFD) https://howtooansys.blogspot.com/

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August 29, 2021, 05:15		#2
LoGaL Senior Member Lorenzo Galieti Join Date: Mar 2018 Posts: 374 Rep Power: 12	Use Species transport Mixing of two gases is not multiphase