Improvements of the Interpolationand Non-Orthogonal Correction Schemes in Caelus

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Information about Improvements of the Interpolationand Non-Orthogonal Correction Schemes...

Published on September 16, 2015

Author: DarrinStephens

Source: slideshare.net

1. Improvements of the Interpolation and Non-Orthogonal Correction Schemes in Caelus Dr. Chris Sideroff Dr. Darrin Stephens

2. Mesh Quality Issues • Sensitivity to mesh quality widely reported • Two main metrics used to quantify “quality” • Non-orthogonality • Skewness • Non-orthogonality tends affect gradient reconstruction, i.e. diffusion terms • Skewness tends to affect face interpolation, i.e. convective terms

3. Central Interpolation • Central-based schemes (linear, limitedLinear) are one dimensional – very susceptible to skewness d

4. Upwind Interpolation • Include gradient to get better than 1st order accuracy

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