Defining a Gas Mixture at Inlet Boundary

Syed Wajeeh · August 17, 2023, 05:24

Hello everyone. I am trying to simulate a combustion chamber in ANSYS Fluent. The problem is that my inlet gas is composed of 15 different species and I am unable to find a solution for defining this mixture. Even in species transport, I can get maximum up to 7 species in a pre-defined model. Will be really thankful if someone can guide me in this regard ASAP please as the task is a bit orthent. Thanks in Advance.

LuckyTran · August 17, 2023, 10:15

Not sure why you are having trouble. Even on very old versions of Fluent I've run 50 species transport equations back when it was hard capped at 50 species. To my knowledge, the 50 species limit has been raised tremendously. It should not be the case that you are limited to 7 species.

Is your issue that Fluent just simply doesn't provide chemkin files specific to your case?

Syed Wajeeh · August 18, 2023, 03:36

Thanks LuckyTran. The issue has been resolved

August 17, 2023, 05:24	Defining a Gas Mixture at Inlet Boundary	#1
Syed Wajeeh Member Syed Wajeeh Join Date: Mar 2022 Posts: 56 Rep Power: 4	Hello everyone. I am trying to simulate a combustion chamber in ANSYS Fluent. The problem is that my inlet gas is composed of 15 different species and I am unable to find a solution for defining this mixture. Even in species transport, I can get maximum up to 7 species in a pre-defined model. Will be really thankful if someone can guide me in this regard ASAP please as the task is a bit orthent. Thanks in Advance.

August 17, 2023, 10:15		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,675 Rep Power: 66	Not sure why you are having trouble. Even on very old versions of Fluent I've run 50 species transport equations back when it was hard capped at 50 species. To my knowledge, the 50 species limit has been raised tremendously. It should not be the case that you are limited to 7 species. Is your issue that Fluent just simply doesn't provide chemkin files specific to your case? Syed Wajeeh and Homogenic like this.

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August 18, 2023, 03:36		#3
Syed Wajeeh Member Syed Wajeeh Join Date: Mar 2022 Posts: 56 Rep Power: 4	Thanks LuckyTran. The issue has been resolved