[bieshuxuhe]

hi !
I have modified DebugSwitches in the " etc/controlDict “ file ，but I don't know what to compile to make the modification come into effect !
I wonder if I have to Allwmake the OpenFOAM again ？ it will take long !

could you help me ?
thanks.

[bieshuxuhe]

hello，
for example ，I change the DebugSwitches { ...}
from
"lduMatrix 1;"
to
"lduMatrix 2;"
in the "OpenFOAM/OpenFOAM-2.2.0/etc/controlDict"

then, I run the dambreak case using interFoam , but I don't find more information print out in the terminal .
I wonder if I should do something to make sure the setting about lduMatrix to become

effect

?

thank you!

[bieshuxuhe]

hello!
when i use openfoam-2.1.x , i could get residuals of every iteration by modifying the DebugSwitches in the " etc/controlDict “ file:
from
"lduMatrix 1;"
to
"lduMatrix 2;"

but now it doesn't work for openfoam-2.2.x ！

how could I get residuals of every iteration from the terminal ? could you help me ?
thanks.

[wyldckat]

Greetings bieshuxuhe,

I vaguely remember someone asking and writing about this the other day... I went looking and I only found these two threads:

• http://www.cfd-online.com/Forums/ope...tml#post480736
• http://www.cfd-online.com/Forums/ope...er-output.html

OK, looks like the output you're looking for is achieved with setting this instead:

SolverPerformance   2;

This is because in OpenFOAM 2.1.x, the test was done here:

src/OpenFOAM/matrices/lduMatrix/lduMatrix/lduMatrixTests.C

while in OpenFOAM 2.2.x, it's done here:

src/OpenFOAM/matrices/LduMatrix/LduMatrix/SolverPerformance.C

Best regards,
Bruno

[bieshuxuhe]

thanks for your help !