Nonlinear temporal dynamics of axisymmetric wavepackets in subsonic jets

Abstract eng:
It is well established that turbulent jets are characterized by large-scale coherent structures. These structures exhibit a remarkable spatio-temporal coherence, despite turbulence. In this work, we analyse from the qualitative point of view the temporal dynamics of axisymmetric, coherent structures educed from experimental, subsonic iso-thermal jets. We use the data presented by Breaky et al. [2], where time-series describing the temporal behaviour of the wavepackets are extracted at different locations along the streamwise direction of the jet. The final goal of the contribution is assessing to what extent non-linear models can reproduce the temporal dynamics of the coherent structures and analysing the resulting dynamics from a qualitative point of view.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket