electrolysis of water

gullu · October 9, 2013, 08:43

hellow everybody:

My name is Luke. I am trying to simulate the chemical reation which is about the multiphase flow (two phase). I consider the liquid-water in a electrolyzer and there are two electrodes in it.

I want to electrolysis the liquid-water and produce the H2 at the surface of cathode and the O2 at the surface of anode. Beside, the mass of the H2O(consumpted), H2(generated) and O2(generated)must to be shown or calculated in my problem.

The simple chemical reaction is below.

H2O(liquid)---->H2(gas) + O2(gas)

This problem is involved with the multiphase and the species transport. Which multiphase model should I choose? And how can I see the phenomenon of the species transport? And how can I calculate the amount of the H2 or O2 which is generated by the chemical reation?

Please help me. Thank you~

A CFD free user · October 10, 2013, 03:48

Hi there!
What kind of Electrolyser are you going to model? Is it a PEM, SOFC or other kinds?

gullu · October 10, 2013, 10:14

Dry Cell HHO generator.

A CFD free user · October 10, 2013, 19:57

I'm working on PEM electrolyser but never heard anything of that.

gullu · October 11, 2013, 00:43

have you checked in google? it is very simple two electrode in KOH electrolyte solution

hamed_m313 · February 16, 2015, 13:07

Hi
I need some information about simulation of water electrolyse process.
please give me any information about this subject.
thanks.

Sahiti · August 10, 2019, 08:57

Hi..I need help in PEM Water electrolysis.

I keep getting this error in 18.1 version, "Fatal signal received (Segmentation Fault)". Resetting the setup tab didn't help though. And in the 2019R2 student version, the solver shuts down abruptly after clicking on 'run calculations' and I'm not even able to note the error.

I'm not able to narrow down to what I'm missing. It's for my M.Tech project and I'm supposed to validate the experimental results.

It's a single cell, The channel is parallel flow, GDL is present only on the cathode side. Membrane used is Nafion 117.

Can someone help me please?

Alamir · April 18, 2020, 12:43

hello.
i need help to simulate pem water electrolysis
can you help me? send tutorial about it . i use fluent also i have problem with 2d mesh
thanks in advance
my email: alamir3182020@gmail.com

Alamir · April 19, 2020, 22:59

Quote:

Originally Posted by A CFD free user

I'm working on PEM electrolyser but never heard anything of that.

hello.
i need help to simulate pem water electrolysis
can you help me? send tutorial about it . i use fluent also i have problem with 2d mesh
thanks in advance
my email: alamir3182020@gmail.com

fzmd55 · June 16, 2023, 04:28

Quote:

Originally Posted by A CFD free user

I'm working on PEM electrolyser but never heard anything of that.

Hi there!! I need some help in eulerian 2 fluid model simulation which I am doing for my PEM water electrolyzer. The thing is I am using UDF to define my source and sink term. At the anode, I am defining the boundary condition as only liquid inlet flow and I defined the mass source term for the oxygen (gas phase). While doing so, the gas phase volume fraction immediately reaches 1 making the liquid phase volume fraction 0 resulting in divergence. I need some idea on how the volume fraction is being calculated?

ramakant · June 22, 2023, 12:22

Quote:

Originally Posted by fzmd55

Hi there!! I need some help in eulerian 2 fluid model simulation which I am doing for my PEM water electrolyzer. The thing is I am using UDF to define my source and sink term. At the anode, I am defining the boundary condition as only liquid inlet flow and I defined the mass source term for the oxygen (gas phase). While doing so, the gas phase volume fraction immediately reaches 1 making the liquid phase volume fraction 0 resulting in divergence. I need some idea on how the volume fraction is being calculated?

Follow any good research papers for the CFD simulation

yyb · July 3, 2024, 05:58

Quote:

Originally Posted by fzmd55

Hi there!! I need some help in eulerian 2 fluid model simulation which I am doing for my PEM water electrolyzer. The thing is I am using UDF to define my source and sink term. At the anode, I am defining the boundary condition as only liquid inlet flow and I defined the mass source term for the oxygen (gas phase). While doing so, the gas phase volume fraction immediately reaches 1 making the liquid phase volume fraction 0 resulting in divergence. I need some idea on how the volume fraction is being calculated?

Hi! Do you know to solve the problem new?
Regard

October 9, 2013, 08:43	electrolysis of water	#1
gullu New Member CHHATTISHGARH Join Date: Oct 2013 Posts: 4 Rep Power: 13	hellow everybody: My name is Luke. I am trying to simulate the chemical reation which is about the multiphase flow (two phase). I consider the liquid-water in a electrolyzer and there are two electrodes in it. I want to electrolysis the liquid-water and produce the H2 at the surface of cathode and the O2 at the surface of anode. Beside, the mass of the H2O(consumpted), H2(generated) and O2(generated)must to be shown or calculated in my problem. The simple chemical reaction is below. H2O(liquid)---->H2(gas) + O2(gas) This problem is involved with the multiphase and the species transport. Which multiphase model should I choose? And how can I see the phenomenon of the species transport? And how can I calculate the amount of the H2 or O2 which is generated by the chemical reation? Please help me. Thank you~

October 10, 2013, 03:48		#2
A CFD free user Senior Member A-A Azarafza Join Date: Jan 2013 Posts: 226 Rep Power: 14	Hi there! What kind of Electrolyser are you going to model? Is it a PEM, SOFC or other kinds? __________________ Regard yours

October 10, 2013, 19:57		#4
A CFD free user Senior Member A-A Azarafza Join Date: Jan 2013 Posts: 226 Rep Power: 14	I'm working on PEM electrolyser but never heard anything of that. __________________ Regard yours

February 16, 2015, 13:07	electrolyse of water with PEM electrolyser	#6
hamed_m313 New Member Hamed Moeini Join Date: Apr 2014 Posts: 3 Rep Power: 12	Hi I need some information about simulation of water electrolyse process. please give me any information about this subject. thanks.

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October 10, 2013, 10:14		#3
gullu New Member CHHATTISHGARH Join Date: Oct 2013 Posts: 4 Rep Power: 13	Dry Cell HHO generator.

October 11, 2013, 00:43		#5
gullu New Member CHHATTISHGARH Join Date: Oct 2013 Posts: 4 Rep Power: 13	have you checked in google? it is very simple two electrode in KOH electrolyte solution

August 10, 2019, 08:57		#7
Sahiti New Member Andhra Pradesh Join Date: Aug 2019 Posts: 1 Rep Power: 0	Hi..I need help in PEM Water electrolysis. I keep getting this error in 18.1 version, "Fatal signal received (Segmentation Fault)". Resetting the setup tab didn't help though. And in the 2019R2 student version, the solver shuts down abruptly after clicking on 'run calculations' and I'm not even able to note the error. I'm not able to narrow down to what I'm missing. It's for my M.Tech project and I'm supposed to validate the experimental results. It's a single cell, The channel is parallel flow, GDL is present only on the cathode side. Membrane used is Nafion 117. Can someone help me please?

April 18, 2020, 12:43		#8
Alamir New Member Join Date: Apr 2020 Posts: 7 Rep Power: 6	hello. i need help to simulate pem water electrolysis can you help me? send tutorial about it . i use fluent also i have problem with 2d mesh thanks in advance my email: alamir3182020@gmail.com