I just have the poiseuille velocity equation(z equation in my code) in a circular pipe and I am supposed to plot the velocity profile in 3D with meshgrid.
mesh grid and mesh ploting
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R = 0.003/2;
This is a simple poiseuelle flow in a pipe, my goal is to plot the velocity of flow(z) in 3D. R is the redius of pipe, x and y are inplane and z is the velocity along the pipe length. I get the error ' Error using mesh Z must be a matrix, not a scalar or vector.' How can I get the z as a matrix to resolve the error?