Triple flames in swirling flows
Triple flames in swirling flows
复制标题
旋转流中的三重火焰
DOI:
10.1016/j.combustflame.2022.112364
复制
发表时间:
2022
影响因子:
4.4
通讯作者:
Oran, Elaine S.
中科院分区:
文献类型:
--
作者:
Zhang, Xiao;Chung, Joseph D.;Oran, Elaine S.
Recent work has shown that the blue whirl, a soot-free hydrocarbon flame, is comprised of a triple flame in a swirling flow undergoing vortex breakdown. This paper describes three-dimensional, numerical simulations of triple flames in swirling flows with and without vortex breakdown and relates this to what is known about the blue whirl. The results for three swirl numbers are presented, all of which develop a triple flame. The shape of the triple flame, however, differs depending on whether there is vortex breakdown and its location. Changes in vorticity before and after ignition are examined for each case. The analysis shows that for the lowest swirl number, the effect of volume expansion dominates and mitigates vortex breakdown. Increasing swirl results in vortex stretching and tilting becoming dominant and promoting vortex breakdown. Which of these effects is dominant determines the flow structure and then the flow structure determines the different flame shapes. Insights gained from this work and their relation to the blue whirl are discussed.
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影响因子:
3.4
作者:
Carpio, J.;Coenen, W.;Sánchez, A.L.;Oran, E.S.;Williams, F.A.
通讯作者:
Williams, F.A.
影响因子:
3.4
作者:
S. Hariharan;Evan Sluder;M. Gollner;E. Oran
通讯作者:
S. Hariharan;Evan Sluder;M. Gollner;E. Oran
影响因子:
2.8
作者:
Joseph D. Chung;Xiao Zhang;C. Kaplan;E. Oran
通讯作者:
Joseph D. Chung;Xiao Zhang;C. Kaplan;E. Oran
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
A. Klimov;V. Bityurin;B. Tolkunov;K. Zhirnov;M. Plotnikova;K. Minko;V. Kutlaliev
通讯作者:
V. Kutlaliev
DOI:
10.2514/6.2019-2169
发表时间:
2019
期刊:
AIAA Scitech 2019 Forum
影响因子:
--
作者:
Chung, Joseph D.;Zhang, Xiao;Kaplan, Carolyn R.;Oran, Elaine S.
通讯作者:
Oran, Elaine S.