Experimental study on the mixing characteristics of upstream transverse injection in cavity based on planar laser scattering

Ao Wang; Zhi Chen; Liming Feng; Lifeng Tian

doi:10.1117/12.3047623

13 December 2024 Experimental study on the mixing characteristics of upstream transverse injection in cavity based on planar laser scattering

Ao Wang, Zhi Chen, Liming Feng, Lifeng Tian

Author Affiliations +

Proceedings Volume 13492, AOPC 2024: Laser Technology and Applications; 134920P (2024) https://doi.org/10.1117/12.3047623
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China

Abstract

The residence time of fuel in the scramjet engine is generally on the order of milliseconds. Achieving efficient mixing of fuel with the mainstream flow within such a short time poses challenges for combustor mixing efficiency, making enhanced mixing methods a focal point of research. Cavity coupled upstream transverse jet injection, as a common combination passive mixing enhancement method, not only enhances mixing efficiency and stabilizes flames but also avoids excessive total pressure loss. This study utilized Nano-tracer-based Planar Laser Scattering (NPLS) technology to obtain detailed structural images of the upstream transverse jet injection flow field in the concave cavity, determining the penetration depth of the jet. Additionally, using the NPLS system, the velocity field of the mixed flow was computed through Particle Image Velocimetry (PIV) techniques.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Ao Wang, Zhi Chen, Liming Feng, and Lifeng Tian "Experimental study on the mixing characteristics of upstream transverse injection in cavity based on planar laser scattering", Proc. SPIE 13492, AOPC 2024: Laser Technology and Applications, 134920P (13 December 2024); https://doi.org/10.1117/12.3047623

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