Plot Monitor Resuls Vs No of Cells

mm391 · February 24, 2014, 06:35

I am tring to do a mesh independance study and I want to plot my monitored values against the number of cells in my 4 different meshes to see how if there are any big jumps in results when increaseing the number of cells. Can anyone suggest how I can do this?

Thanks

Mark

RodriguezFatz · February 24, 2014, 11:05

Use excel...

mm391 · February 24, 2014, 16:04

Problem is I can't find the "No of Cells" to select fory access?

RodriguezFatz · February 25, 2014, 03:34

But if you create the 4 meshes, you will see the number of cells. What exactly is the problem?

TimberJ3 · February 25, 2014, 09:56

Hi Mark,

What i would do in your case is to export data as ASCII to excel: x-coordinate, y-coordinate and the propierty you want to evaluate for each mesh. Then you should dispose each trio of each mesh data with x & y-coordinates in ascendent values (excel) and plot the 4meshes with the same base (x&y coordinates) and the propierties:
If you are capable of, I have never tried, you can use a surface 3D-plot in excel or othes SW with the coordinates and the propierty studied.
If not you can make a 2D plot, choosing different surfaces of control like y=0; y=0.1 ... And plot the results of the four meshes in the same graphic or four graphics with the same base (as the dimensions won't change) and you can compare them.

Is that what you mean?

mm391 · February 25, 2014, 10:55

Quote:

Originally Posted by RodriguezFatz

But if you create the 4 meshes, you will see the number of cells. What exactly is the problem?

My problem is, being new to this software I can create a geometery and a mesh in one fluid flow system but the only way I have been taught to create a different mesh is to duplicate the fluid flow system (shown in attachment) and then change all the parameters.

I 'm not sure if you link the flow fluid systems to be able compare the four meshes. I hope this makes sense and thank you for all you help so far. Much appreciated.

Mark

pakk · February 25, 2014, 11:29

Quote:

Originally Posted by mm391

My problem is, being new to this software I can create a geometery and a mesh in one fluid flow system but the only way I have been taught to create a different mesh is to duplicate the fluid flow system (shown in attachment) and then change all the parameters.

In the meshing platform, if you click 'statistics' somewhere on the left of your screen, you should see the number of elements.
Or in Fluent, once you have opened the simulation, there is in the menu "Mesh", "Info" and then "Size", which will show you the number of elements.

February 24, 2014, 06:35	Plot Monitor Resuls Vs No of Cells	#1
mm391 New Member Mark Join Date: Oct 2013 Location: Brighton Posts: 13 Rep Power: 12	I am tring to do a mesh independance study and I want to plot my monitored values against the number of cells in my 4 different meshes to see how if there are any big jumps in results when increaseing the number of cells. Can anyone suggest how I can do this? Thanks Mark

February 24, 2014, 11:05		#2
RodriguezFatz Senior Member Philipp Join Date: Jun 2011 Location: Germany Posts: 1,297 Rep Power: 27	Use excel... __________________ The skeleton ran out of shampoo in the shower.

February 25, 2014, 03:34		#4
RodriguezFatz Senior Member Philipp Join Date: Jun 2011 Location: Germany Posts: 1,297 Rep Power: 27	But if you create the 4 meshes, you will see the number of cells. What exactly is the problem? __________________ The skeleton ran out of shampoo in the shower.

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February 24, 2014, 16:04		#3
mm391 New Member Mark Join Date: Oct 2013 Location: Brighton Posts: 13 Rep Power: 12	Problem is I can't find the "No of Cells" to select fory access?

February 25, 2014, 09:56		#5
TimberJ3 New Member Juhti Join Date: Feb 2014 Location: Spain Posts: 4 Rep Power: 12	Hi Mark, What i would do in your case is to export data as ASCII to excel: x-coordinate, y-coordinate and the propierty you want to evaluate for each mesh. Then you should dispose each trio of each mesh data with x & y-coordinates in ascendent values (excel) and plot the 4meshes with the same base (x&y coordinates) and the propierties: If you are capable of, I have never tried, you can use a surface 3D-plot in excel or othes SW with the coordinates and the propierty studied. If not you can make a 2D plot, choosing different surfaces of control like y=0; y=0.1 ... And plot the results of the four meshes in the same graphic or four graphics with the same base (as the dimensions won't change) and you can compare them. Is that what you mean?