Question

The NWF method uses __________

(a) TVD

(b) NVF

(c) Both NVF and TVD

(d) Neither NVF nor TVD

I got this question at a job interview.

My doubt stems from Deferred Correction for High-Resolution Schemes topic in portion High Resolution Schemes of Computational Fluid Dynamics

Answer 1

The correct answer is (b) NVF

To explain I would say: The NWF method operates by linearizing the normalized interpolation profile. This uses the simplified form of the TVD framework given by \(\tilde{\phi}_f=a\tilde{\phi}_c+b\). The correction term here is smaller than the one obtained by standard deferred correction methods.