How to use Fluent Species to model a gas-solid reaction

obsidianop · January 17, 2019, 18:27

I'm trying to use the species transport tools in Fluent to model a gas-solid reaction. Specifically I'm imagining one gas flowing into a tube filled with a porous bed of solid, reacting with that solid, and a different gas flowing out.

I was able to get a gas-gas reaction going fairly easily by using the built-in methane-air mixture. However, gas-solid is proving somewhat more difficult and I've scoured the internet for examples without much luck. This page in the documentation seems to imply it's possible, but I can't figure out how to actually *do* it.

I've set up a mixture and added gases to the "selected species" list and solids to the "selected solid species" list. I then set up the reactions in the "reactions" tab, and set gas flowing into the inlet. I set the main body to be my mixture. But nothing reacts; the solution says that the reaction kinetics are always 0.

Has anyone encountered a good example of this, or have any tips?

Ahmed Saeed Mansour · July 21, 2020, 09:32

Hello sir, I am trying to make a mixture containing gases and solids but I defined the solid material in the library but I still do not see it in the mixture lists. The solid species list is not activated. how did you activate it?
Thank you!

January 17, 2019, 18:27	How to use Fluent Species to model a gas-solid reaction	#1
obsidianop New Member Join Date: Jan 2019 Posts: 2 Rep Power: 0	I'm trying to use the species transport tools in Fluent to model a gas-solid reaction. Specifically I'm imagining one gas flowing into a tube filled with a porous bed of solid, reacting with that solid, and a different gas flowing out. I was able to get a gas-gas reaction going fairly easily by using the built-in methane-air mixture. However, gas-solid is proving somewhat more difficult and I've scoured the internet for examples without much luck. This page in the documentation seems to imply it's possible, but I can't figure out how to actually do it. I've set up a mixture and added gases to the "selected species" list and solids to the "selected solid species" list. I then set up the reactions in the "reactions" tab, and set gas flowing into the inlet. I set the main body to be my mixture. But nothing reacts; the solution says that the reaction kinetics are always 0. Has anyone encountered a good example of this, or have any tips?

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July 21, 2020, 09:32		#2
Ahmed Saeed Mansour Senior Member Have a nice time! Join Date: Feb 2016 Location: mech.eng.ahmedmansour@gmail.com Posts: 291 Rep Power: 11	Hello sir, I am trying to make a mixture containing gases and solids but I defined the solid material in the library but I still do not see it in the mixture lists. The solid species list is not activated. how did you activate it? Thank you!