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add: variations of stabilization params w.r.t. velocity

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timovanopstal 2016-09-26 18:52:09 +02:00 committed by Arne Morten Kvarving
parent 952bb20bd7
commit ff76b83c98
2 changed files with 37 additions and 1 deletions
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19
Apps/Common/StabilizationUtils.C
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@ -59,4 +59,23 @@ bool getTauNSALEPt(double dt, double mu, const Vector& U, const Matrix& G, doubl
return true;
}
bool getTauPtJac(const Vector& U, const Matrix& G, const double tauM, Vector& tauMjac)
{
tauMjac = -pow(tauM,3)*G*U;
return true;
}
bool getTauNSPtJac(const Vector& U, const Matrix& G, const double tauM, const double& tauC, Vector& tauMjac, Vector& tauCjac)
{
if (!getTauPtJac(U, G, tauM, tauMjac))
return false;
tauCjac = (-tauC/tauM) * tauMjac;
return true;
}
}

17
Apps/Common/StabilizationUtils.h
View File

@ -45,6 +45,23 @@ namespace StabilizationUtils {
//! \details Stabilization parameters in integration point
bool getTauNSALEPt(double dt, double mu, const Vector& U, const Matrix& G,
double& tauM, double& tauC, const double Ct=2.0, const double Cl=36.0);
//! \brief Computes variation of stability parameters with respect to velocity
//! \param[in] U Velocity vector
//! \param[in] G The G matrix
//! \param[in] tauM Stabilization parameter for momentum
//! \param[out] tauMjac Variation of tauM with respect to U
bool getTauPtJac(const Vector& U, const Matrix& G, const double tauM, Vector& tauMjac);
//! \brief Computes variation of stability parameters with respect to velocity
//! \param[in] U Velocity vector
//! \param[in] G The G matrix
//! \param[in] tauM Stabilization parameter for momentum
//! \param[in] tauC Stabilization parameter for continuity
//! \param[out] tauMjac Variation of tauM with respect to U
//! \param[out] tauCjac Variation of tauC with respect to U
bool getTauNSPtJac(const Vector& U, const Matrix& G, const double tauM,
const double& tauC, Vector& tauMjac, Vector& tauCjac);
}
#endif