Streamline on a curve surface

i heve results of a flow abouve curve surface and i want to present few stream lines but i get a wired flat surface result, how can i fix it . i provide my velocity and gride. My code is streamline(X,Y,U,V)

[Divyajyoti Nayak]

Hi @ran, could you share the result you are expecting? Also I plotted your grid and found that it is curved and not rectangular, is that intentional? That migh be causing the issue.

[ran]

Hi, I solved the problem, thanks! The issue was that my data was on an irregular grid, so I interpolated it, and that solved the problem