LHS and RHS of - have different dimensions

Reza_hmd · July 24, 2024, 06:53

Hello everyone.

I am trying to solve particles distributions inside a box, but when I try to run it, I got an error which is :

"--> FOAM FATAL ERROR:
LHS and RHS of - have different dimensions
dimensions : [0 3 -2 0 0 0 0] - [1 0 -2 0 0 0 0]

From function Foam::dimensionSet Foam :: operator-(const Foam::dimensionSet&, const Foam::dimensionSet&)
in file dimensionSet/dimensionSet.C at line 527.

FOAM aborting "

Unfortunately, It didn't show where the problem was. I was wondering if anyone has encountered the same problem.

tomf · July 25, 2024, 11:38

Hi,

So you have kg/s² versus m³/s², looks like somewhere there is a density missing. But as you said, there is no clue on where this may be. Maybe this remarks will help you isolate the problem.

Good luck,
Tom

Reza_hmd · July 28, 2024, 15:32

Hi Tom.
Thank you for your reply.
It was a bit problematic for me to find the issue, but I found out that the p dimension differed from the default dimension in the solver.

July 24, 2024, 06:53	LHS and RHS of - have different dimensions	#1
Reza_hmd New Member Reza Join Date: May 2018 Posts: 2 Rep Power: 0	Hello everyone. I am trying to solve particles distributions inside a box, but when I try to run it, I got an error which is : "--> FOAM FATAL ERROR: LHS and RHS of - have different dimensions dimensions : [0 3 -2 0 0 0 0] - [1 0 -2 0 0 0 0] From function Foam::dimensionSet Foam :: operator-(const Foam::dimensionSet&, const Foam::dimensionSet&) in file dimensionSet/dimensionSet.C at line 527. FOAM aborting " Unfortunately, It didn't show where the problem was. I was wondering if anyone has encountered the same problem.

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July 25, 2024, 11:38		#2
tomf Senior Member Tom Fahner Join Date: Mar 2009 Location: Breda, Netherlands Posts: 647 Rep Power: 32	Hi, So you have kg/s² versus m³/s², looks like somewhere there is a density missing. But as you said, there is no clue on where this may be. Maybe this remarks will help you isolate the problem. Good luck, Tom

July 28, 2024, 15:32		#3
Reza_hmd New Member Reza Join Date: May 2018 Posts: 2 Rep Power: 0	Hi Tom. Thank you for your reply. It was a bit problematic for me to find the issue, but I found out that the p dimension differed from the default dimension in the solver.