[Phigo90]

In this link, the residual calculation is explained. However, can anyone demonstrate (maybe with a figure or a small example) the calculation of the scalar value n? What does "n" vividely mean?

Link --> https://openfoam.com/documentation/g...residuals.html

[klausb]

n is the normFactor, r is the initialResidual (see PCG.C source code). These are used to bring all the residuals e.g. for p, U, k, Omega etc., depending on your turbulence model onto the same normalized scale.

When you plot your residuals using pyFoam you can see that all residuals are on a scale ranging from 0 to 1 (left, y-axis) even so the absolute values differ a lot.

[Phigo90]

Originally Posted by klausb

n is the normFactor, r is the initialResidual (see PCG.C source code). These are used to bring all the residuals e.g. for p, U, k, Omega etc., depending on your turbulence model onto the same normalized scale.

When you plot your residuals using pyFoam you can see that all residuals are on a scale ranging from 0 to 1 (left, y-axis) even so the absolute values differ a lot.

Thanks that you are trying to solve my problem. I understand why it is necessary to use a normalization, but I do not understand why it is performed like this. In addition, I do not understand why this kind of normalization leads to values in the range of "0" to "1". Do you know any literature reference for this kind of normalization?