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What is the rationale of second-order finite volume discretization?

The answer is that it's a consequence of how we eliminate the high order terms in the taylor series expansion of the discretization error, not the truncation error.
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Has there been a comparison bewteen SIMPLE/SIMPLER and JFNK for steady CFD?

Below is a similar case in which a coupled method is compared with a SIMPLE-like segregated one. The author showed an impressive acceleration of convergence. Darwish I. et al., A Coupled ...
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