Multiplication of two volVectorField

ChGr · May 30, 2016, 11:50

Hey,

I'm new to OpenFOAM and want to access the volVectorField U. It's not a problem to scale it by a scalar, simply by writing

Code:

volVectorField scaledU = scalar * U.

The Problem is that I need to scale every component of U by it's own value. I need to multiply the vector field U by another vectorField.

Code:

volVectorField S = [(s11, s12, s13), (s21,s22,s33),...]
volVectorField scaledU = [(s11*U11,s12*U12,s13*U13(), (s21*U21,s22*U22,s23*U23(),...]

Does anyone have a hint how i could realize this?

ChGr · May 30, 2016, 12:08

Sorry, this post was too early.

The Programmers Guide says that the function "scale(a, b)" should be used. Sadly the guide is not up to date at this point for a long time. The function that should be used is

Code:

cmptMultiply(a, b)

May 30, 2016, 11:50	Multiplication of two volVectorField	#1
ChGr New Member Join Date: Feb 2014 Posts: 17 Rep Power: 12	Hey, I'm new to OpenFOAM and want to access the volVectorField U. It's not a problem to scale it by a scalar, simply by writing Code: volVectorField scaledU = scalar * U. The Problem is that I need to scale every component of U by it's own value. I need to multiply the vector field U by another vectorField. Code: volVectorField S = [(s11, s12, s13), (s21,s22,s33),...] volVectorField scaledU = [(s11U11,s12U12,s13U13(), (s21U21,s22U22,s23U23(),...] Does anyone have a hint how i could realize this?

May 30, 2016, 12:08		#2
ChGr New Member Join Date: Feb 2014 Posts: 17 Rep Power: 12	Sorry, this post was too early. The Programmers Guide says that the function "scale(a, b)" should be used. Sadly the guide is not up to date at this point for a long time. The function that should be used is Code: cmptMultiply(a, b) Jim1310 likes this.

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