Plotting streamlines in an unsteady flow given vector field equation

How do i input the y equation into matlab to plot the stream lines on the vector field?

am I doing the correct way or is there another way of doing this, thanks for the help

The first picture shows the velocity fileld equaiton and the second picture shows the matlab codes to get the graphs.

Answer 1

[Sam Chak]

@Kiat Tsen Lim

Since it involves the time dimension, I think you will need to use the quiver3() function.

https://www.mathworks.com/help/matlab/ref/quiver3.html

[Kiat Tsen Lim]

but t is already declared as 0, so do i have to use the quiver3() function?

[Kiat Tsen Lim]

i only need a 2d graph, no need for 3d

[Sam Chak]

Because I thought you want to plot for .

Since t = 0, then you may be looking for this:

[X, Y] = meshgrid(0:10/14:10, -1:11/14:10);
U = 0.4 + 0.9*X;
V = 1.2 - 0.7*Y;
quiver(X, Y, U, V, 1.5)
axis square