The present study is an experimental investigation on the effect of axial and transverse acoustic forcing on a generic swirl flow.The aim is to provide a qualitative understanding of typical swirl flow response to transverse acoustic forcing, for a better understanding of the response of swirl-stabilized flames to the same configuration of acoustic forcing.The DR.FORMULATED PROBIOTICS MOOD latter is critical for the ongoing research on thermoacoustic instability in annular gas turbine combustors.A single burner test-rig with transverse extensions to facilitate transverse acoustic modes is employed in this experimental study.
The swirl flow, established using a generic radial swirl generator, features vortex breakdown.Two transverse forcing configurations are studied: a) symmetric forcing which leads to a pressure antinode at the burner, and, b) antisymmetric forcing Outdoor Umbrella which results in a velocity antinode at the burner location.The study is based on results from planar streamwise and crosswise flow field measurements.We find that while the symmetric forcing configuration causes a flow response similar to axial forcing, antisymmetric forcing results in a helical response.