[DesignModeler] Importing XYZ point data, making a surface for the bed of a CFD solution domain

@Arash · March 18, 2023, 13:10

Hello freinds,

I have a some of XYZ data of a 3D geometry in text format(.txt).These data are export from Tecplot software.I want to create the geometry from these points in Design Modeler and use Anasys Fluent to simulate the flow on it.
What steps do you suggest so that I can convert the text file to solid geometry in Design Modeler ?

Thank you for your help with my question

evcelica · March 21, 2023, 11:27

I've only done this once.
In your text file, (text, tab delimited) make 5 columns.
1st column is line number, 2nd is point number in that line, then X,Y,Z. To close the loops, like if you had a circle, you must have a point 0 included at the end of each line number with no X,Y,Z,. If you are not making a circular surface, then you font need to close the lines.
I believe each of these lines must have the same number of points.
The create curve from the text file. You will then have a bunch of curves made by spline interpolation of your points. Perform a skin/loft of those curves to create your surface.
Of course you may need to reorder your text file to put it into the order of a bunch of lines which you can use.
Good Luck

@Arash · Yesterday, 10:50

I have three columns of XYZ geometry data in a notepad file. How and on what basis should I arrange them ?
I have been dealing with this problem for a long time to be able to create its solid geometry from the data in the notepad file.
Is it possible to send you the notepad file so that you can help me ?
Thank you very much for your help.

March 18, 2023, 13:10	Importing XYZ point data, making a surface for the bed of a CFD solution domain	#1
@Arash New Member Join Date: Oct 2022 Posts: 12 Rep Power: 2	Hello freinds, I have a some of XYZ data of a 3D geometry in text format(.txt).These data are export from Tecplot software.I want to create the geometry from these points in Design Modeler and use Anasys Fluent to simulate the flow on it. What steps do you suggest so that I can convert the text file to solid geometry in Design Modeler ? Thank you for your help with my question

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March 21, 2023, 11:27		#2
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,129 Rep Power: 22	I've only done this once. In your text file, (text, tab delimited) make 5 columns. 1st column is line number, 2nd is point number in that line, then X,Y,Z. To close the loops, like if you had a circle, you must have a point 0 included at the end of each line number with no X,Y,Z,. If you are not making a circular surface, then you font need to close the lines. I believe each of these lines must have the same number of points. The create curve from the text file. You will then have a bunch of curves made by spline interpolation of your points. Perform a skin/loft of those curves to create your surface. Of course you may need to reorder your text file to put it into the order of a bunch of lines which you can use. Good Luck

Yesterday, 10:50		#3
@Arash New Member Join Date: Oct 2022 Posts: 12 Rep Power: 2	I have three columns of XYZ geometry data in a notepad file. How and on what basis should I arrange them ? I have been dealing with this problem for a long time to be able to create its solid geometry from the data in the notepad file. Is it possible to send you the notepad file so that you can help me ? Thank you very much for your help.