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Which of these plots are irrelevant to CFD post-processing?

(a) Contour plots

(b) Vector plots

(c) xy plots

(d) Bar plots

I had been asked this question during an interview.

I need to ask this question from Simple CFD Techniques topic in chapter Some Simple CFD Techniques of Computational Fluid Dynamics

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The correct option is (d) Bar plots

Easy explanation: Contour plots give a global view of the variation in flow properties. xy plots show the variation of a flow property with respect to an independent variable. Vector plots display vector quantities at discrete grid points. Bar plots cannot be used in CFD.

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