| 48 | // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * // |
| 49 | |
| 50 | bool Foam::functionObjects::Q::calc() |
| 51 | { |
| 52 | if (foundObject<volVectorField>(fieldName_)) |
| 53 | { |
| 54 | const volVectorField& U = lookupObject<volVectorField>(fieldName_); |
| 55 | const tmp<volTensorField> tgradU(fvc::grad(U)); |
| 56 | const volTensorField& gradU = tgradU(); |
| 57 | |
| 58 | return store |
| 59 | ( |
| 60 | resultName_, |
| 61 | 0.5*(sqr(tr(gradU)) - tr(((gradU) & (gradU)))) |
| 62 | ); |
| 63 | } |
| 64 | else |
| 65 | { |
| 66 | return false; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | |
| 71 | // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * // |