Which of these is correct for a QUICK scheme?(a) False diffusion is zero(b) False diffusion is small(c) False diffusion is big(d) False diffusion is infinityThe question was posed to me in an online quiz.Origin of the question is Convection-Diffusion Problems topic in chapter Convection-Diffusion Problems of Computational Fluid Dynamics

Which of these is correct for a QUICK scheme?(a) False diffusion is ze

1.	Which of these is correct for a QUICK scheme?(a) False diffusion is zero(b) False diffusion is small(c) False diffusion is big(d) False diffusion is infinityThe question was posed to me in an online quiz.Origin of the question is Convection-Diffusion Problems topic in chapter Convection-Diffusion Problems of Computational Fluid Dynamics
Answer» Correct option is (b) False diffusion is small The explanation: The QUICK scheme involves ONE DOWNWIND NODE also. So, there will be a false-diffusion in this method. But this false diffusion VALUE is not big as it is an upwind biased scheme (extra nodes in the upstream than the downstream).

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