I am trying to plot 2D streamlines on a slice in 3D space using a 3D velocity data set. To obtain the 2D velocity field over the x-y plane, I am calculating ( Uxihat+ Uyjhat) in the calculator. Then, I am applying the EvenlySpacedStreamlines function, but it is not displaying any results. This method has worked for other data sets, so I am uncertain why it is not working this time. Any assistance would be appreciated!
Since the “method” is working for other datasets, you can start from inspecting your data, checking if you are correctly extracting the components from the dataset, checking for anomalies or missing points in the data. Finally, you can check if you have right parameters set for the functions that you use. This is because, for different datasets, you may have to use different seed points, integration settings etc. Sometimes the streamlines are computed correctly but not visualized due to incorrect slice (plane) settings/position.
Last but not least, check for dimension mismatches and also ParaView errors in the Output Window.