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Use PointWise to create a wavy wall

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Old   January 25, 2013, 16:06
Question Use PointWise to create a wavy wall
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Hope
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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
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Old   January 26, 2013, 21:42
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Chris Sideroff
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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
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Old   January 27, 2013, 02:35
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another method:

You can generate the coordinates in Excel and import them in PW.
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Old   January 27, 2013, 10:59
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Thank you cnsidero and Far. I may try Far's method first because it seems easier to me.
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Old   February 15, 2020, 17:57
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Quote:
Originally Posted by Far View Post
another method:

You can generate the coordinates in Excel and import them in PW.
Would this still be possible in pointwise? if so can you give an explanation on how this would be done?
I have tried creating a sine wave in excel and saving it as a .csv file, converting this to a .dat in notepad++ and importing this as a grid and as a database, but this hasn't worked.
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Old   February 27, 2020, 13:57
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Zach Davis
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I think you just create a segment file which has a single header with the first line having a single integer representing the number of points in the file followed by the x-, y-, and z-coordinates for each point. LIke this...



2
1.000 5.000 3.000
7.500 2.250 5.128


Save the file with a *.dat extension, and then just import it with File -> Import Database
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Old   March 4, 2020, 17:24
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THanks, for the reply, I think I tried this at one point but couldn't get it to work.
In the end I imported a solidworks database of a sine wave and constrained connectors to it.
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