2016
DOI: 10.1016/j.euromechflu.2016.01.006
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Impact of rotating and fixed nozzles on vortex breakdown in compressible swirling jet flows

Abstract: a b s t r a c tVortex breakdown of swirling, round jet flows is investigated in the compressible, subsonic regime by means of Direct Numerical Simulation (DNS). This is achieved by solving the compressible Navier-Stokes equations on a cylindrical grid using high-order spatial and temporal discretization schemes. TheReynolds number is Re = ρ The integral swirl number at the inflow is S int = 0.85. The parameters are chosen properly so as to make comparisons with existing experiments at lower Mach numbers possib… Show more

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Cited by 4 publications
(1 citation statement)
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References 49 publications
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“…Moreover, it has been shown by numerous authors that spiral breakdown occurs in the wake of an axisymmetric breakdown as a global instability mode of the flow [10,18,7,14,17,13,15]. Two modes of spiral breakdown have been observed: the single helix (|m|=1) and the double helix (|m|=2), where m is the azimuthal wave number.…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, it has been shown by numerous authors that spiral breakdown occurs in the wake of an axisymmetric breakdown as a global instability mode of the flow [10,18,7,14,17,13,15]. Two modes of spiral breakdown have been observed: the single helix (|m|=1) and the double helix (|m|=2), where m is the azimuthal wave number.…”
Section: Introductionmentioning
confidence: 99%