# Use PointWise to create a wavy wall

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 January 25, 2013, 16:06 Use PointWise to create a wavy wall #1 New Member   Hope Join Date: Oct 2012 Posts: 8 Rep Power: 5 Hi. I am using PointWise to create a wavy wall in my project. I need to let the air flow through a long pipe, first part is a almost smooth wall with roughness=100nm, the second part is connected with the first part and the wall is a "wavy" one. The function looks like 0.05sin(100x) or something (I am not sure). And I plan to use CFX to do the calculation. Is there any way to build the "wavy" wall's geometry and mesh in PointWise? Thank you! Li

 January 26, 2013, 21:42 #2 Senior Member   Chris Sideroff Join Date: Mar 2009 Location: Ottawa, ON, CAN Posts: 390 Rep Power: 13 There is no analytic sine function in Pointwise. There are some more general curve drawing tools (Catmull-Rom, Akima, Bezier) as well as a conic curve that you could use to approximate a sine curve. If you're looking for an actual sine curve you'd have to write a Glyph script to generate a discrete approximation to a sine curve using a series of segments. Of course the more segments the better the approximation. Let me know if you need help with a script to do that. -Chris

 January 27, 2013, 02:35 #3 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,285 Blog Entries: 6 Rep Power: 43 another method: You can generate the coordinates in Excel and import them in PW.

 January 27, 2013, 10:59 #4 New Member   Hope Join Date: Oct 2012 Posts: 8 Rep Power: 5 Thank you cnsidero and Far. I may try Far's method first because it seems easier to me.

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