# Fuel cell I-v Curve

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 November 14, 2013, 01:27 Fuel cell I-v Curve #1 New Member   Alireza Setayesh Hagh Join Date: Nov 2013 Posts: 8 Rep Power: 5 Hi I am trying to plot I-V curve for fuel cell is there any one who can help me in this respect

 November 15, 2013, 07:11 #2 Senior Member     A-A Azarafza Join Date: Jan 2013 Posts: 206 Rep Power: 6 Hi Buddy, It's an easy work. Impose the appropriate value for voltage on cathode wall terminal and calculate the corresponding current density. You need to do the same procedure for a few points. Then plot the values. Just keep in mind that, start from a voltage near to open circuit voltage and decrease it as e step function. I hope it helps __________________ Regard yours

 November 15, 2013, 10:12 #3 New Member   Alireza Setayesh Hagh Join Date: Nov 2013 Posts: 8 Rep Power: 5 dear sir Thank you very much 1-But why I should start from Open circuit voltage 2-what do you mean by"Just keep in mind that, start from a voltage near to open circuit voltage and decrease it as e step function.

November 15, 2013, 13:05
#4
Senior Member

A-A Azarafza
Join Date: Jan 2013
Posts: 206
Rep Power: 6
Quote:
 Originally Posted by Aliset1236 dear sir Thank you very much 1-But why I should start from Open circuit voltage 2-what do you mean by"Just keep in mind that, start from a voltage near to open circuit voltage and decrease it as e step function.

It turns out you didn't take my points. I meant, to plot a I-V curve, you need to do simulation at least for a few points, right? For instance, let say V=0.9, 0.8,0.7,0.6,0.5, 0.4 , ...
So, you must calculate the corresponding current density, respectively. By saying the above statement, I meant that you start from 0.9 (near to Open circuit ) and obtain its current density, and then go to 0.8 and obtain the current density for this too and so forth. As you see, it's like a step function with magnitude of 0.1.
__________________
Regard yours

 January 5, 2015, 16:22 polarization curve. #5 New Member   hadjadj Join Date: Jan 2014 Location: algeria Posts: 1 Rep Power: 0 please. any one can tell me about ploting cell potential curve versus current density (V-I). what is the relation between thses two entity? and how can I plot it in fluent 6.3 sincerly.

January 12, 2015, 12:00
#6
Senior Member

A-A Azarafza
Join Date: Jan 2013
Posts: 206
Rep Power: 6
Quote:
 Originally Posted by razika please. any one can tell me about ploting cell potential curve versus current density (V-I). what is the relation between thses two entity? and how can I plot it in fluent 6.3 sincerly.

Hi,
it's not a difficult thing. To plot a current-voltage (I-V) in Fluent, you only need to specify one of these two mentioned properties as BC at cathode wall terminal, (potentiostatic or galvanostatic). Let's say that you select potentiostatic, it means that you prescribe the value of voltage at cathode and receive the report calculated value of current density in Fluent console. You got the current density for a specific potential. Now, you need to repeat the same strategy for the next value of voltage. Performing this in a range of values, lets say voltages between 0.9 to 0.2, you got the corresponding values of current density and there you go, your current density vs voltage curve is ready to plot. It's straightforward and facile.
__________________
Regard yours

 April 15, 2015, 13:15 #7 New Member   Yunus Join Date: Sep 2014 Posts: 1 Rep Power: 0 Thank you so much I've been looking for this.

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post pchoopanya Mesh Generation & Pre-Processing 1 March 1, 2016 00:56 aarvay FLUENT 22 January 26, 2016 00:47 Jallen13a FLUENT 1 April 3, 2012 05:32 Orb FLUENT 0 February 27, 2012 13:55 Purushothama CD-adapco 2 May 31, 2010 21:58

All times are GMT -4. The time now is 15:13.

 Contact Us - CFD Online - Top