Research on identification of vortex structure in oxy-fuel heating furnace based on vortex identification method

• Published in: Energy sources. Part A, Recovery, utilization, and environmental effects Vol. ahead-of-print; no. ahead-of-print; pp. 1 - 12
• Main Authors: Wu, Yongfu, Guo, Changpeng, Feng, Shuo, Dong, Yunfang, Wang, Zhenfeng, Liu, Zhongxing
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 28.12.2020
• Subjects: heating furnace; Oxy-fuel; q criterion; vortex structure; ω criterion
• ISSN: 1556-7036; 1556-7230
• DOI: 10.1080/15567036.2020.1849452

MILD oxy-fuel combustion has become the subject of study as it can improve the combustion efficiency and reducing the emission of harmful gases. However, there are few researches on the vortex motion of Oxy-fuel combustion, and there is no clear definition for the application of gas vortex. In this paper, based on the experimental and simulation data of the heating furnace, the distribution of eddy motion was analyzed from aspects of the turbulent vortex formation, formation, and movement of the vortex. In this paper, the vortex structure of the furnace is analyzed by using the Q criterion, method, and method. We found that both Q criterion, criterion, and method could identify the vortex structure in the furnace, but method could identify the vortex structure that could not be identified by the other two methods. could display more vortex structures and could identify both weak and strong vertices, with stronger recognition ability.