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1D Plot (Position vs. Conductivity)

Posted 13 apr 2018, 22:38 GMT-4 Electromagnetics, Electrochemistry, Results & Visualization 5 Replies

Andrey B
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Hi,

I am attempting to plot a simple Position (y) vs. Conductivity (σ). I'm using the Electroanalysis model, and I use the formula: σ[S/m] = c [mol/L]lambda[S/(mmol/L)], to obtain the conductivity along the 2D shape along the y-axis.

The issue is, I can't seem to find a way to plot the Conductivity data so that it corresponds to the y-axis data along the shape itself. Does anybody know a way to do this?

Thanks, AB

5 Replies Last Post 20 apr 2018, 01:31 GMT-4
Lasse Murtomäki
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Posted: 8 years ago 16 apr 2018, 03:41 GMT-4

Hi

Are you trying to plot along a boundary of your geometry or along an arbitrary line? The former is easy. A 2D cut line is naturally possible but you do not mean that? A tedious way is to define multiple points in the geometry and use Point Evaluation in the Derived Value node.

Lasse

Hi Are you trying to plot along a boundary of your geometry or along an arbitrary line? The former is easy. A 2D cut line is naturally possible but you do not mean that? A tedious way is to define multiple points in the geometry and use Point Evaluation in the Derived Value node. Lasse
Andrey B
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Posted: 8 years ago 16 apr 2018, 20:41 GMT-4

Hi Lasse,

Yes, along the boundary of the geometry. What I'd like for the graph to have is an iteration over the geometry. On the solution of the geometry itself, there are various concentrations [mol/L]. So I use the formula stated previously to obtain the conductivity of the geometry at various points. Now, what I'd like to do is plot the position vs conductivity graph over the geometry (down the middle) on the y-axis.

Hope that makes more sense, AB

Hi Lasse, Yes, along the boundary of the geometry. What I'd like for the graph to have is an iteration over the geometry. On the solution of the geometry itself, there are various concentrations [mol/L]. So I use the formula stated previously to obtain the conductivity of the geometry at various points. Now, what I'd like to do is plot the position vs conductivity graph over the geometry (down the middle) on the y-axis. Hope that makes more sense, AB
Lasse Murtomäki
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Posted: 8 years ago 17 apr 2018, 05:19 GMT-4

Hi

I do not see what the problem is.

Lasse

Hi I do not see what the problem is. Lasse
Andrey B
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Posted: 8 years ago 18 apr 2018, 16:50 GMT-4

The problem is, I can't find the expression to iterate over the geometry. There is a variable 'y' that I thought would do the trick, but it has a static value.

The problem is, I can't find the expression to iterate over the geometry. There is a variable 'y' that I thought would do the trick, but it has a static value.
Lasse Murtomäki
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Posted: 8 years ago 20 apr 2018, 01:31 GMT-4

What do you mean by 'iterate'?

You can put the molar conductivity as a parameter in the parameters list, let's call it 'lambda'. Insert its value, and in the line plot, write 'lambda·c' to the expression box if c is your concentration variable. In the line graph you choose the boundary on which you want to make the plot by clicking it.

Results --> 1D Plot Group --> Line Graph

Do I understand you at all?

Lasse

What do you mean by 'iterate'? You can put the molar conductivity as a parameter in the parameters list, let's call it 'lambda'. Insert its value, and in the line plot, write 'lambda·c' to the expression box if c is your concentration variable. In the line graph you choose the boundary on which you want to make the plot by clicking it. Results --> 1D Plot Group --> Line Graph Do I understand you at all? Lasse

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