Difference between revisions of "OpenFOAM guide/SurfaceInterpolation;;deltaCoeffs"

Latest revision as of 19:24, 30 June 2010

surfaceInterpolation::deltaCoeffs

Reciprocal of cell-to-cell (centres) distance, with orthogonality correction.

On an orthogonal grid: $C_\delta = \frac{1}{\delta}$

Where:

$\delta$ is the cell-to-cell distance.

Standard definition: $C_\delta = \frac {\mathbf{\hat{n}} \bullet \boldsymbol \delta} {\left \vert \boldsymbol \delta \right \vert^2}$

Where:

$\mathbf{\hat{n}}$ is the surface normal vector; and
$\boldsymbol \delta$ is the cell-to-cell vector.

Used in OpenFOAM for stability with poor meshes: $C_\delta = \frac{1} {\text{max}\left ( \delta \bullet \mathbf{\hat{n}}, 0.05 \left \vert \delta \right \vert \right )}$

Revision as of 14:45, 30 June 2010 (view source) Marupio (Talk \| contribs) (Created page with '== surfaceInterpolation::deltaCoeffs == Reciprocal of cell-to-cell (centres) distance, with orthogonality correction. On an orthogonal grid: <math>C_\delta = \frac{1}{\delta}</…')	Latest revision as of 19:24, 30 June 2010 (view source) Marupio (Talk \| contribs) m (moved SurfaceInterpolation;;deltaCoeffs to OpenFOAM guide/SurfaceInterpolation;;deltaCoeffs)
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