Our recent work, published in JFM, reveals a 52° phase lag between vortex shedding and maximum vortical interaction in turbulent combustors. We show that by disrupting these interactions, we can suppress thermoacoustic instability.
https://doi.org/10.1017/jfm.2025.10362

#ORNL #JFM #JournalOfFluidMechanics #publication #turbulentreactingflow #vortexshedding #vortexinteractions #FluidDynamics #Research #IITMadras #CambridgeUniversityPress

“Kirigami Sun”

Kirigami is a variation of origami in which paper can be cut as well as folded. Here, researchers look at flow through a cut kirigami sheet and how that flow changes with the cuts’ length. In the top central image, white lines mark the paper boundaries. As the cut gaps get larger, flow through them transitions from a continuous jet to swirling vortex shedding. Along the bottom, we see similar patterns emerge in the wake of uniformly-cut sheets, too. On the right, the flow comes through in jets; moving leftward, it transitions to an unsteady vortex shedding flow. (Image credit: D. Caraeni and Y. Modarres-Sadeghi)

#2024gofm #flowVisualization #fluidDynamics #jets #physics #science #vortexShedding