Making a grid from the XY plot

mami · October 16, 2009, 06:27

Hello

I am trying to generate a rectangular grid from the XY
plot, but I am having a hard time because the model is
not meshed in a constant distance.

I am making a rectangular grid from a rectangular, but not
flat surface.
There is steady flow on one side of the surface and I am
measuring its wall shear stress.

I have got the plots from the XY plot using the iso-surface
and direction vector. However, the nodes are not in constant
distance so I cannot form a contour map (by using excel and
MATLAB).

Is there any way to extract variables in constant spacing
instead of its cell or node value?

I'm sorry for the long explanation. Please tell me if there
are anything you don't understand.

Thank you very much for your help!

jack1980 · October 16, 2009, 11:00

Think Fluent will only display nodal values in XY-plot? Perhaps write values, read them in MatLab and use "interp1"? There is also "interp2" but I don't think this would work in your case; you might have to do "interp1" in one dimension and then in the other.

mami · October 19, 2009, 00:53

thank you, jack!

I have been hesitating to use interp1 because the number of plots in the grid were very large and complicated. However, I guess it is the best way.

Thank you for your help!

October 16, 2009, 06:27	Making a grid from the XY plot	#1
mami New Member Mami Terao Join Date: Oct 2009 Posts: 3 Rep Power: 17	Hello I am trying to generate a rectangular grid from the XY plot, but I am having a hard time because the model is not meshed in a constant distance. I am making a rectangular grid from a rectangular, but not flat surface. There is steady flow on one side of the surface and I am measuring its wall shear stress. I have got the plots from the XY plot using the iso-surface and direction vector. However, the nodes are not in constant distance so I cannot form a contour map (by using excel and MATLAB). Is there any way to extract variables in constant spacing instead of its cell or node value? I'm sorry for the long explanation. Please tell me if there are anything you don't understand. Thank you very much for your help!

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October 16, 2009, 11:00		#2
jack1980 Senior Member Jouke de Baar Join Date: Oct 2009 Posts: 127 Rep Power: 17	Think Fluent will only display nodal values in XY-plot? Perhaps write values, read them in MatLab and use "interp1"? There is also "interp2" but I don't think this would work in your case; you might have to do "interp1" in one dimension and then in the other.

October 19, 2009, 00:53		#3
mami New Member Mami Terao Join Date: Oct 2009 Posts: 3 Rep Power: 17	thank you, jack! I have been hesitating to use interp1 because the number of plots in the grid were very large and complicated. However, I guess it is the best way. Thank you for your help!