Question

The value of the Downwind Weighing Factor (DWF) lies between ___________

(a) 0≤DWF≤∞

(b) DWF≥0

(c) 0≤DWF≤1

(d) DWF≤1

The question was posed to me in a national level competition.

My doubt stems from High Resolution Schemes topic in section High Resolution Schemes of Computational Fluid Dynamics

Answer 1

Correct choice is (c) 0≤DWF≤1

Explanation: By using DWF, the high-resolution estimate of \(\tilde{\phi_f}\, or\, \phi_f\) is redistributed between the upwind and the downwind nodes. As the value of Φf computed using Φc and Φc. The value of DWF always lies between 0 and 1.