When the flow is not aligned with the grid lines, the diffusion produced by the upwind scheme is ____________
(a) false advection
(b) false convection
(c) anti-diffusion
(d) false diffusion
The question was posed to me by my college professor while I was bunking the class.
This question is from Convection-Diffusion Problems topic in section Convection-Diffusion Problems of Computational Fluid Dynamics