Approach for hydroxyl tagging velocimetry signal extraction in supersonic combustion field

Jun Shao; Jinegfeng Ye; Zhiyun Hu; Jingyin Li

doi:10.1117/12.2267908

12 May 2017 Approach for hydroxyl tagging velocimetry signal extraction in supersonic combustion field

Jun Shao, Jinegfeng Ye, Zhiyun Hu, Jingyin Li

Proceedings Volume 10173, Fourth International Symposium on Laser Interaction with Matter; 101731B (2017) https://doi.org/10.1117/12.2267908
Event: 4th International Symposium on Laser Interaction with Matter, 2016, Chengdu, China

Abstract

The key to improve Hydroxyl Tagging Velocimetry (HTV) Measurement precision in the laser supersonic combustion diagnosis research is to improve the effect of image processing. In terms of strong OH background and low signal-to-noise ratio (SNR) issues, the approach for HTV signal extraction in supersonic combustion filed is proposed. Firstly, the method of compensation-and-correction-window-filter and the progressive approach characteristic filtering window approach are adopted to remove background for image preprocessing. Then the algorithm combined image segmentation and the skeleton extraction is employed for signal extraction, that improves the signal identification ability in the interferences of fierce combustion zone of a mass of hydroxyl background, solves the insufficient precision problem of extracting hydroxyl effective signal, what's more, achieves the effective information of velocity distribution in combustion flow.

Citation Download Citation

Jun Shao, Jinegfeng Ye, Zhiyun Hu, and Jingyin Li "Approach for hydroxyl tagging velocimetry signal extraction in supersonic combustion field", Proc. SPIE 10173, Fourth International Symposium on Laser Interaction with Matter, 101731B (12 May 2017); https://doi.org/10.1117/12.2267908

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