# How to make a spline in Fluent?

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 May 2, 2016, 01:32 How to make a spline in Fluent? #1 New Member   Amit Chauhan Join Date: May 2010 Location: Chennai, India Posts: 18 Rep Power: 12 Hello, I understand, to plot any flow parameter, you first need to create a line or point or a surface in fluent and then plot on same (with direction vector or along curve length). However, I get stuck if the line to be used for plotting is curved. Say for instance, I want to plot velocity over a spline (basically a curve joining 2 or more points). Problem - There is a curved surface (wall boundary condition). I want to observe velocity variation over it (just couple of cells above, as surface has no slip BC). Now to do this, I need to create a curved line over this surface (spline) over which I can plot the data. Anybody please help me with this. Thank you so much in advance.

 May 3, 2016, 10:36 #2 Senior Member   Scott Rumage Join Date: May 2009 Location: Seattle, WA Posts: 152 Rep Power: 14 Tecplot has a tutorial that might give you some sense of how to do what you ask. It is titled: Create & interpolate to an offset surface and is located here: http://www.tecplot.com/blog/2016/02/22/create-interpolate-offset-surface/ . BTW … Tecplot 360 EX does load native Fluent simulations. Scott

 May 4, 2016, 03:44 #3 New Member   Amit Chauhan Join Date: May 2010 Location: Chennai, India Posts: 18 Rep Power: 12 Thank you Scott for your kind reply. As I do not have access to TECPLOT at my working location, I would like to find some solution in Fluent directly or some open source. I guess there is no way to make the curved spline in Fluent directly. But here is an alternate that I found and its working: Through ISO-Surface option, we can make the periphery of the surface at given location. Once the curved periphery is made, use CLIPPING to clip the curve to the desired length. Now I can plot any flow paramtere over this curve along the surface, through an option ALONG THE CURVE in PLOT menu bar Thank you once again Scott so much.