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Showing 1 to 3 of 3 for “"azimuthal instability"”.
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Vortex Ring Collision with Free-Slip and No-Slip Wall
Vortex ring collision on wall explains azimuthal instability, stretching, vorticity and wall turbulence in a simplified way, required in many applications. Present study performs high Reynolds number (2500 and 4000) simulations of vortex rings approaching no-slip and free-slip walls for different …
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Computational analysis of thermo-acoustic instabilities in combustion chambers and afterburners
A simplified model is introduced to study thermo-acoustic instabilities in asymmetric combustion chambers. Such instabilities can be triggered when correlations between heat-release and pressure oscillations exist, leading to undesirable effects. Gas turbine designs typically consist of a periodic …
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Computation of the rise or fall of a drop through a suspending liquid with no mass transfer: Axisymmetric, transitional and complex regimes
… that the main mechanism responsible is an azimuthal wave instability, similar to that observed for free vortex rings. To the best of our knowledge, there has been no previous report of an azimuthal instability internal to a buoyant liquid drop.