icoFoam incompatible dimensions

student12345 · June 23, 2015, 09:20

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?

sharonyue · June 24, 2015, 14:35

P=[1 2 -1 0 0 0 0]

Change this to P=[0 2 -2 0 0 0 0]

student12345 · June 24, 2015, 14:45

thanks, i figured it out now. But i have another problem now ( see me other thread) do you also know how to fix this?

June 23, 2015, 09:20	icoFoam incompatible dimensions	#1
student12345 New Member peter pan Join Date: Jun 2015 Posts: 3 Rep Power: 10	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?

June 24, 2015, 14:35		#2
sharonyue Senior Member Dongyue Li Join Date: Jun 2012 Location: Beijing, China Posts: 839 Rep Power: 17	P=[1 2 -1 0 0 0 0] Change this to P=[0 2 -2 0 0 0 0] __________________ My OpenFOAM algorithm website: http://dyfluid.com By far the largest Chinese CFD-based forum: http://www.cfd-china.com/category/6/openfoam We provide lots of clusters to Chinese customers, and we are considering to do business overseas: http://dyfluid.com/DMCmodel.html

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June 24, 2015, 14:45		#3
student12345 New Member peter pan Join Date: Jun 2015 Posts: 3 Rep Power: 10	thanks, i figured it out now. But i have another problem now ( see me other thread) do you also know how to fix this?