PEMFC producing H2 instead of consuming

BetoV · July 6, 2016, 10:01

I'm simulating a PEM fuel cell with the addon-module of fluent , but under current conditions it's producing hydrogen instead of consuming it , this become more evident when I try to raise the relative humidity. I'm really confused , I can't figure out what's going on. any help will be highly appreciated thanks.

Kosmosisy · July 28, 2016, 07:51

If you look at the mole fraction of H2 in the channels, it is normal. Because of the electro-osmotic drag, some of water travels through to cathode and it seems like amount of H2 is increased in the channels. You should check the net mass flux.

BetoV · July 28, 2016, 15:38

Thank you for your answer, and yes I notice that a few weeks ago but I didn't know how to close the topic. But again thank you so much for your answer

July 6, 2016, 10:01	PEMFC producing H2 instead of consuming	#1
BetoV New Member Join Date: Jul 2016 Posts: 2 Rep Power: 0	I'm simulating a PEM fuel cell with the addon-module of fluent , but under current conditions it's producing hydrogen instead of consuming it , this become more evident when I try to raise the relative humidity. I'm really confused , I can't figure out what's going on. any help will be highly appreciated thanks. Last edited by BetoV; July 13, 2016 at 04:56.

July 28, 2016, 07:51		#2
Kosmosisy New Member Join Date: Oct 2015 Posts: 24 Rep Power: 10	If you look at the mole fraction of H2 in the channels, it is normal. Because of the electro-osmotic drag, some of water travels through to cathode and it seems like amount of H2 is increased in the channels. You should check the net mass flux. BetoV likes this.

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July 28, 2016, 15:38		#3
BetoV New Member Join Date: Jul 2016 Posts: 2 Rep Power: 0	Thank you for your answer, and yes I notice that a few weeks ago but I didn't know how to close the topic. But again thank you so much for your answer