Study on difference and adaptability of calculation method of spherical flame radius

Han, Zhiqiang; Xiao, Bang; Tian, Wenxi; Li, Juntong; Yu, Wenbin

doi:10.1016/j.fuel.2019.116216

Cited by 6 publications

(3 citation statements)

References 42 publications

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“…In Fig. 6 , a two-dimensional coordinate system is established based on measurement center point Q, which is determined by the Han I method 9 . The Schlieren images are divided into four regions using the horizontal and vertical coordinate system.…”

Section: Calculation Methods and Results Discussionmentioning

confidence: 99%

“…The new measurement center Q′ is determined again according to the Han I method 9 after removing the angle affected by the ignition electrodes in Fig. 13 .…”

Section: Calculation Methods and Results Discussionmentioning

confidence: 99%

“…Chen et al 6 proposes a random circle detection algorithm to measure the flame radius by determining the true circle according to the distance threshold requirements. Broustail 8 , Han 9 , Bouvet 10 , DuttaRoy 15 , Gong 16 , and Tahtouh 17 calculates the flame propagation radius by circle fitting of the flame front-edge points. Zuo et al 11 extracted the flame propagation radius through center measurement method.…”

Section: Introductionmentioning

confidence: 99%

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Calculation method of spherically expanding flame propagation radius to consider ignition electrode effects

Fan,

Fu,

et al. 2024

Sci Rep

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Ignition electrodes have an immense impact on the accurate measurement of the flame propagation spherical radius. In this study, a flame-radius calculation method is designed. The method is able to eliminate effects due to the ignition electrodes. The adaptability and optimization effects of the proposed method are analyzed. The results show that the ratio of the angle is affected by the ignition electrodes under the Han II method. There are three obvious divisions include a high-value area, a sharp-variation area, and a mild-variation area. The ratio of the angle affected by the ignition electrodes is only applicable to the mild-variation region when the flame presents respective convex and concave distributions. For these distributions, the increment rate of the mean radius is 0.4–0.85% and 0.42–3.19%. The reduced rate of the standard deviation of the radius extraction value is 11.91–22.1% and 5.13–17.99%, and the reduced rate of the radius extraction value range is 20.32–39.51% and 0.32–8.09%.

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Section: Calculation Methods and Results Discussionmentioning

confidence: 99%

“…The new measurement center Q′ is determined again according to the Han I method 9 after removing the angle affected by the ignition electrodes in Fig. 13 .…”

Section: Calculation Methods and Results Discussionmentioning

confidence: 99%