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Forum: OpenFOAM Programming & Development

August 6, 2013, 09:02

Replies: 4

inverse of a matrix or solution of implicit equation

Views: 4,167

Posted By romant

X should be a volTensorField I think and then y...

X should be a volTensorField I think and then y is a volVectorField, there is an operator for transpose, which is X.T() for a tensor X, so an inverse (^1) you get with inv(X) and a transpose with...

Forum: OpenFOAM Programming & Development

April 27, 2012, 05:21

Replies: 4

inverse of a matrix or solution of implicit equation

Views: 4,167

Posted By romant

solution found

The solution was a little bit easier than first assumed. OpenFOAM has a great operator definition which lets you divide by a tensor :)

So in case you have an equation

A_ij x_j = s_i

and you...

Forum: OpenFOAM Programming & Development

April 25, 2012, 10:35

Replies: 4

inverse of a matrix or solution of implicit equation

Views: 4,167

Posted By romant

Further checking this, I found a function...

Further checking this, I found a function inv(const tensorField&), which I believe takes the inverse of a tensor, but I am unsure for what it takes the inverse, either the tensor in every cell or the...

Forum: OpenFOAM Programming & Development

April 25, 2012, 08:51

Replies: 4

inverse of a matrix or solution of implicit equation

Views: 4,167

Posted By romant

inverse of a matrix or solution of implicit equation

Hej,

I am looking for a way to solve the following equation

a_i = c1 * a_j * du_i / dx_j + c2
for i=1 this looks like

a_1 = c1 * a_1 * du_1/dx_1 + c1 * a_2 * du_1 / dx_2 + c1 * a_3 *...

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