Identification of Canonical Flow Patterns in Turbulent Swirling Combustion

Yi, Tongxun; Jiang, Naibo; Fugger, Christopher A.; Hsu, Paul S.; Felver, Josef; Roy, Sukesh; Schmidheiser, Sara; Sirignano, Matthew; Emerson, Benjamin; Lieuwen, Tim

doi:10.2514/6.2020-0434

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…The demonstrated high-speed two-color DSPIV is particularly useful for accurate 3D flow velocity measurements in practical combustion and flow test rigs. Utilization of simultaneous high-speed two-color DSPIV and OH PLIF imaging technique helps to enhance understanding of fundamental flame and flow interactions [38,39]. With recently developed multi-legged burst-mode lasers [40], the measurement speed of simultaneous two-color DSPIV/OH-PLIF can be further extended to 100-1000 kHz with single laser platform for investigating complicate turbulent flow fields generally encountered in high-speed combustion facilities such as scramjets and rotary detonation engines.…”

Section: Discussionmentioning

confidence: 99%

10-kHz-rate two-color dual-plane stereo-PIV using an optical parametric oscillator

Jiang¹,

Hsu²,

Fugger³

et al. 2023

Meas. Sci. Technol.

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10-kHz-rate dual-plane stereoscopic particle-image velocimetry (DSPIV) was applied in a swirling jet flame measurement simultaneously with hydroxyl planar laser-induced fluorescence (OH-PLIF). A high-speed burst-mode laser system with an Optical Parametric Oscillator (OPO) were used in double-pulse laser generation of 532 nm for one plane and 607 nm for the second plane. Temporally-resolved PIV image sequences, nine-component velocity gradient tensor, and simultaneous OH-PLIF images are presented. Flow vorticities and strain rates are also obtained with the measured velocity gradients. Compared with previous polarization-based dual-plane PIV technique, two-color based DSPIV measurement has distinctive advantages in elimination of signal interference from different PIV plane due to polarization leakage and hence improves measurement accuracy.

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Section: Discussionmentioning

confidence: 99%