Which of these methods is used to treat the non-orthogonal diffusion term?(a) Deferred correction(b) Predictor–corrector(c) Green-gauss(d) Trial and error methodI have been asked this question during a job interview.This is a very interesting question from Diffusion Problem in chapter Diffusion Problem of Computational Fluid Dynamics

Which of these methods is used to treat the non-orthogonal diffusion t

1.	Which of these methods is used to treat the non-orthogonal diffusion term?(a) Deferred correction(b) Predictor–corrector(c) Green-gauss(d) Trial and error methodI have been asked this question during a job interview.This is a very interesting question from Diffusion Problem in chapter Diffusion Problem of Computational Fluid Dynamics
Answer» Correct choice is (a) Deferred CORRECTION To explain: The cross-diffusion term cannot be expressed in TERMS of nodal values. So, deferred correction is used here. Its value is computed USING the current GRADIENT field and this is added as a source term in the right-hand side of the algebraic equation.

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