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What is the central differencing scheme similar to?

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What is the central differencing scheme similar to?

(a) Interpolation profile

(b) Linear interpolation profile

(c) Weighted average method

(d) Geometric mean

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Question is from Convection-Diffusion Problems topic in portion Convection-Diffusion Problems of Computational Fluid Dynamics

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Right choice is (b) Linear interpolation profile

The best I can explain: The central difference scheme matches the linear interpolation profile. The general form (given below) of both are the same.

Φ=k0+k1(x-xC).

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