[HakikiCanakkaleli]

Hi

Could anyone please tell me what cmptMag function is for?

Form Foam::cmptMag	(	const VectorSpace< Form, Cmpt, nCmpt > & 	vs	) inline

It seems that it returns the absolute value of the argument. Assuming this is true, what is its difference from abs()?

Many thanks in advance.

[ngj]

Hallo,

First of all, abs is not being used as a function in the FOAM namespace, as it is called mag instead.

Consider a vector v(-1, -1, -1), the mag(v) is the square root of 3, i.e. the two norm. If you instead do vector w = Foam::cmptMag(v) you will get w = (1, 1, 1).

Kind regards,

Niels

[dela]

Originally Posted by ngj

Hallo,

First of all, abs is not being used as a function in the FOAM namespace, as it is called mag instead.

Consider a vector v(-1, -1, -1), the mag(v) is the square root of 3, i.e. the two norm. If you instead do vector w = Foam::cmptMag(v) you will get w = (1, 1, 1).

Kind regards,

Niels

I know this is an old thread but I am doing a similar thing without success. I am trying to find the absolute value of velocity U. I have tried all I can to no avail. Please help
I did "volVectorField U1CmptMag = Foam::cmptMag(U1);"

thank you