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The upwind scheme is _____________

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in Computational Fluid Dynamics by (118k points)
The upwind scheme is _____________

(a) conservative but wiggles

(b) bounded and conservative

(c) bounded but not conservative

(d) neither conservative nor bounded

I have been asked this question during an internship interview.

My question is based upon Convection-Diffusion Problems topic in portion Convection-Diffusion Problems of Computational Fluid Dynamics

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Right option is (b) bounded and conservative

The best I can explain: The upwind scheme does not produce results which wiggle. So, it is bounded. It uses consistent expressions to calculate fluxes through cells. Therefore, it is sure that the formulation is conservative.

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