Matplotlib streamplot Streamplot | Matplotlib 3.7.1 documentation https://people.math.sc.edu/Burkardt/f_src/vector_plot/vector_plot.html https://www.csc.kth.se/~weinkauf/notes/cylinder2d.html https://people.sc.fsu.edu/~jburkardt/datasets/case1_flow/case1_flow.html