Some bumps over the line (Plot Over line) in Paraview

[Ezat Shokrani]

Dear SimVascular developers,

I have simulated the blood flow in a thoracic aorta case with high resolution mesh (2M elements). I have used the Paraview software to report the results. In order to show the variation of velocity along a line in an arbitrary cross section, I firstly used the 'Slice' command to export that cross section. Then, I used the 'Extract Selection' command to extract selected elements from that dataset. After that, I used the 'calculator' command to define stream wise velocity based on the velocity components. Finally, I used the 'Plot Over line' command with high resolution (1000) to export the results (stream wise velocity) over a line. However, I can see some bumps along my plot over line. I have attached the plot that I have exported.
I know that this problem related to the Paraview Software, However, I thought that someone has encountered this problem and therefore, he/she knows how this problem can be solved. I would be wondering if you could guide me on this issue.

Best regards,
Ezat Shokrani