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physics.flu-dyn2026
Numerical Bow Shock Instabilities in Inert Polyatomic Gases
G. S. Sidharth, Anubhav Dwivedi
We investigate inviscid numerical instabilities that arise in simulations of axisymmetric flow over a hypersonic sphere in an inert, calorically perfect gas at low specific heat ra…
physics.flu-dyn2026
From oblique-wave forcing to streak reinforcement: A perturbation-based frequency-response framework
Dušan Božić, Anubhav Dwivedi, Mihailo R. Jovanović
We develop a perturbation-based frequency-response framework for analyzing amplification mechanisms that are central to subcritical routes to transition in wall-bounded shear flows…