Question

Let x, y be the coordinates in the physical domain and ξ, η  be the coordinates in the computational domain. Which of these is correct for adaptive grids?

(a) (frac{partialxi}{partial x}≠1 )

(b) (frac{partialxi}{partial x}≠0 )

(c) (frac{partialxi}{partial t}≠0 )

(d) (frac{partialxi}{partial t}≠1 )

Answer 1

Correct choice is (c) (frac{partialxi}{partial t}≠0 )

To explain I would say: Adaptive grids change with varying time. So, the time rate of change of coordinates will never be equal to zero. This is given by(frac{partialxi}{partial x}≠0 ). They may or may not vary from the physical coordinates.