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- - **Transformation of volSymmTensorField to volTensorField**
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Transformation of volSymmTensorField to volTensorFieldHello together
Is there a way to transform a existing volSymmTensorField to a volTensorField?I want to implement a new turbulence model which is based on the use of the symmetric part of the mean velocity gradient S as well as the skew-symmetric ones ijW. ijIn my eyes - defining the symmetric part S is no big deal:ijCode:
` volSymmTensorField S = symm(fvc::grad(U_));` W has to be a tensor with all 9 componets (I guess...?). I defined it like this:ijCode:
` volTensorField W = skew(fvc::grad(U_));` ==' in the REqn (in line: 431 - I used the LaunderGibsonRSTM as basis for my new model - switched from tmp<fvSymmTensorMatrix> to tmp<fvTensorMatrix> REqn) couldn't been recognized anymore. So far I guess it's because of the different number of components I used while defining with volSymmTensorField and volTensorField. Therefore my quetion: Is there a way to transform a existing volSymmTensorField to a volTensorField? But maybe there is a better way to deal with my problem? I'm grateful about every input! Thanks a lot & greetings Sven |

Hello together
It doesn't really answer my question but I found a way to solve my problem: I had a further look at my eqautions and recognized that I'm multiply my new skew-symmetric tensor W with a symmetric ones b. After that I'm summing this product like (bW + Wb) which creates a symmetric tensor again. While implementing it like symm(bW+Wb) to the REqn all my problems with tmp<fvSymmTensorMatrix> dissapeared. Maybe someone of you can help this.Cheers - Sven |

Q&D fixA quick and dirty fix.
Just multiply with tensor(1,0,0,0,1,0,0,0,1) too bad but if performance is not a concern go ahead, kill the CPU ;) |

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