Question

Which of these statements is correct?

(a) The DWF method converges faster than the NWF method

(b) Both the methods are of the same properties

(c) The NWF method is more robust than the DWF method

(d) The DWF method is more robust than the NWF method

I had been asked this question in final exam.

Origin of the question is Deferred Correction for High-Resolution Schemes in portion High Resolution Schemes of Computational Fluid Dynamics

Answer 1

Correct answer is (c) The NWF method is more robust than the DWF method

The explanation is: The NWF method is created to overcome the shortcomings of the DWF method. In the NWF method, instabilities do not arise. This allows the NWF method to be much more robust than the DWF method.