Question

What is the advantage of the least-square method over the other methods?

(a) Computational ease

(b) Accuracy

(c) Flexibility

(d) Stability

I got this question by my college director while I was bunking the class.

The query is from Diffusion Problem topic in chapter Diffusion Problem of Computational Fluid Dynamics

Answer 1

Correct answer is (c) Flexibility

For explanation I would say: The least-square method offers more flexibility over the other methods to compute gradients for choosing between the order of accuracy used and the stencil on which to work. According to the user’s ease, these two can be chosen.