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The high-resolution schemes formulated using the NWF method with the equation \(\tilde{\phi_f} = l\tilde{\phi_c}+k\) are stable without any alteration when __________(a) k>2(b) l>2(c) k>l(d) l>kThis question was posed to me at a job interview.I would like to ask this question from High Resolution Schemes in section High Resolution Schemes of Computational Fluid Dynamics

Answer» CORRECT choice is (d) l>k

To elaborate: The NWF formulation of the high-resolution SCHEMES, when the VALUE of l is greater than the value of k, the diagonal coefficients are all positive and hence the SOLUTION is highly stable. This is the case everywhere except a narrow region in NVD.


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