Transitiontoturbulenceisdrivenbyviscouseffectssounless

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Unformatted text preview: essibility Compressible but subsonic 0.3 < < ~0.8 (depends on the shape) Compressible, but can approximate by incompressible with corrections Transonic ~0.8 < < 1.2 Local supersonic Shocks form Regions of sub and super Supersonic > 1 Dominated by shocks and expansion waves Hypersonic > 5 Viscous heating drives chemistry changes, disassociation, ionization, new physics comes into play In this course we will concentrate on subsonic. Gas Dynamics will deal with the compressible effects. Turbulent –vs‐ laminar In laminar flow the streamlines are smooth and the flow moves smoothly along the streamline In a turbulent flow there is a random component to the velocity. The fluid tumbles and twists and ha...
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