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Forum: OpenFOAM Pre-Processing

November 20, 2008, 07:43

Replies: 10

Tensor operation scale

Views: 2,129

Posted By maka

I think it is: s=tr(T2 & in

I think it is:

s=tr(T2 & inv(T1))/3;

Forum: OpenFOAM Pre-Processing

November 11, 2008, 13:07

Replies: 10

Tensor operation scale

Views: 2,129

Posted By maka

I think it should be: s*T1*

I think it should be:

s*T1*inv(T1)= s*I=T2*inv(T1);

Then we know X=s*I;
s=sqrt(mag(X)/n); where n is the number of diagonal elements of the tensor I;

is that correct? Thanks.

Forum: OpenFOAM Pre-Processing

November 11, 2008, 12:57

Replies: 10

Tensor operation scale

Views: 2,129

Posted By maka

If we have an equation: s*T1=

If we have an equation:
s*T1=T2; where s is unknown scalar; T1 and T2 is two tensors; How can we calculate s by well defined mathematical operation?

s=T2/T1; is not mathematically defined....

Forum: OpenFOAM Pre-Processing

August 23, 2007, 08:52

Replies: 10

Tensor operation scale

Views: 2,129

Posted By maka

The operation of devision is n

The operation of devision is not defined for vector (example of a tensor) because it only has a meaning when they are parallel. But here what I'm after is not an legitimate operation on vector or...

Forum: OpenFOAM Pre-Processing

August 23, 2007, 05:41

Replies: 10

Tensor operation scale

Views: 2,129

Posted By maka

Thanks Hrv, I will try it. @

Thanks Hrv, I will try it.
@Krystian: the operation of scalar division is defined as tensor/scalar but not the opposite. As a result 1/tensor will give a compilation error.

Best regards, ...

Forum: OpenFOAM Pre-Processing

August 22, 2007, 11:49

Replies: 10

Tensor operation scale

Views: 2,129

Posted By maka

In programmer's guide: c_i =

In programmer's guide:
c_i = scale(a, b) = (a1*b1, a2*b2, a3*b3)

I'm looking for a similar operation but with division operators.

scalediv(a, b) = (a1/b1, a2/b2, a3/b3). Is there a...

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