| 48 | // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * // |
| 49 | |
| 50 | bool Foam::functionObjects::flowType::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 | volScalarField magD(mag(symm(gradU))); |
| 59 | volScalarField magOmega (mag(skew(gradU))); |
| 60 | dimensionedScalar smallMagD("smallMagD", magD.dimensions(), SMALL); |
| 61 | |
| 62 | const volTensorField SSplusWW |
| 63 | ( |
| 64 | (symm(gradU) & symm(gradU)) |
| 65 | + (skew(gradU) & skew(gradU)) |
| 66 | ); |
| 67 | |
| 68 | return store |
| 69 | ( |
| 70 | resultName_, |
| 71 | (magD - magOmega)/(magD + magOmega + smallMagD) |
| 72 | ); |
| 73 | } |
| 74 | else |
| 75 | { |
| 76 | return false; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | |
| 81 | // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * // |