Hi Jennifer,
Please use this workflow to create streamline:
1. At the first step make sure your velocity field is in a point data format. If it's not, convert it to point data by using the "Point Data to Cell Data" filter.
2. From filters choose "Mask Points". In the field called "On Ratio" put the ratio of the number of total points in your geometry (you can find the total number of points in your geometry by clicking on "Information" and reading the "Number of Points")
over the number of streamlines that you want to have. For example: if you have 1000 points and you want to have 100 streamlines, put 1000/100 = 10 in the "On Ratio" field.
3. Put the number of streamlines in the "Maximum Number of Points". For example: if you choose to have 100 streamlines, put 100 in the "Maximum Number of Points" field. Don't forget to click on Apply!
4. From filters choose "Stream Tracer With Custom Source" and choose your initial data as source and choose the mask points that you created as seeds. Again click on Apply!
Hopefully now you should see more packed streamlines everywhere in your geometry cause this workflow tries to distribute streamlines uniformly throughout your geometry. Please let me know if you have any questions.
Best,
Mehrdad
**********************************************************************
Mehrdad Yousefi
PhD Candidate, Graduate Research Assistant
Department of Materials Science and Engineering
Clemson Cyber Infrastructure Technology Visualization
Clemson University
266 Sirrine Hall
311 Cooper Library
Clemson, SC 29634-0971
**********************************************************************