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Uncorrected surface-normal gradient scheme

∇f⊥Q=αQP−QN∣d∣ \snGrad Q = \alpha \frac{Q_P - Q_N}{| \vec{d} |}

where

α=1cos(θ) \alpha = \frac{1}{cos(\theta)}

Properties​

  • Central-difference scheme without non-orthogonal correction
  • Implicit evaluation
  • delta coefficients given by: nonOrthDeltaCoeffs

Usage​

The scheme is specified using:

snGradSchemes
{
    default         none;
    grad(U)         uncorrected;
}

Further information​

Source code