[student12345]

Hi,

im new to OpenFOAM and trying to do my first simulation.

I always get the error: incompatible dimensions for operatin

[U[0 1 -2 0 0 0 0] ] == [-grad(p)[1 -2 -2 0 0 0 0]]

The Dimensions in the "0-folder" for U=[0 1 -1 0 0 0 0] and P=[1 2 -1 0 0 0 0]

I tried to change, but didnt work out.
I was looking for the U==-grad(p) equation, but couldnt find it.
In wich file is this written down?

I searched older posts and found some similar problems, but couldnt fix it.

Can anyone help me?