Question

What is the order of accuracy of the QUICK scheme?

(a) second-order

(b) first-order

(c) fourth-order

(d) third-order

I had been asked this question by my college professor while I was bunking the class.

I would like to ask this question from Convection-Diffusion Problems topic in portion Convection-Diffusion Problems of Computational Fluid Dynamics

Answer 1

Correct choice is (a) second-order

To explain: As the QUICK scheme is based on a quadratic function, its accuracy in terms of Taylor Series truncation error is third-order. This has a higher order of accuracy than the upwind and second-order upwind schemes.