دورية أكاديمية
Blowout limits of inclined nonpremixed turbulent jet flames
| العنوان: | Blowout limits of inclined nonpremixed turbulent jet flames |
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| المؤلفون: | Wang, Qiang, Liang, Xuan, Lu, Aquan, Wang, Ben, Fujita, Osamu, Chung, Suk Ho, Hu, Longhua |
| المساهمون: | Mechanical Engineering Program, Physical Science and Engineering (PSE) Division, Clean Combustion Research Center, School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, Anhui 230009, China, State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, China, Division of Mechanical and Space Engineering, Hokkaido University, Sapporo 060-8628, Japan |
| بيانات النشر: | Elsevier BV |
| سنة النشر: | 2023 |
| المجموعة: | King Abdullah University of Science and Technology: KAUST Repository |
| مصطلحات موضوعية: | Nonpremixed turbulent jet flame, Blowout limit, Inclined angle, Damkohler number (da) |
| الوصف: | The blowout behavior of inclined nonpremixed turbulent jet flames is investigated by varying the jet inclined angle in the range of -90° to 90° The critical jet velocity at blow-out limit is quantified experimentally for various nozzle diameters, different fuels and inclined angles. Numerical simulations are performed to emphasize the flow field difference for the positive and negative inclined angles. Physical modeling is conducted to incorporate the effect of the inclined angle on blow-out behavior. Major findings include: (1) The negatively inclined jet flames show more intense yellow luminosity with larger sooting zones than the positively inclined jet flames; (2) The blowout limit decreases appreciably with the jet inclined angle for the negatively inclined flames, while for the positively inclined jet flames, this decrease is relatively small; (3) Physical analysis of the flow development of inclined jets is conducted, indicating the centerline velocity along the jet trajectory decreases faster for the flame with smaller inclined angle. And the decrease rate is relatively larger for the negatively inclined jet flames; (4) Based on the analysis of the flow development as well as the characteristic velocity with the inclined angle variation, a model based on the Damköhler number (Da) accounting for the effect of jet inclined angle is developed to characterize the blowout limits of inclined jet flames. The proposed model successfully correlates the experimental data. The present findings provide new data and a basic scaling law for the blowout limit of nonpremixed inclined turbulent jet flames, revealing the effect of the relative angle between the jet momentum and buoyancy. ; This work was supported by National Key R&D Program of China (No. 2021YFA0716203), National Natural Science Foundation of China (NSFC) (51976051, 52225605), International Partnership Program of Chinese Academy of Sciences (No. 211134KYSB20200010), Chinese Space Station Science Experiment Project (No. ZDBS-ZRKJZ-TLC012), Opening Fund ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| تدمد: | 1873-2704 1540-7489 |
| العلاقة: | https://linkinghub.elsevier.com/retrieve/pii/S1540748922005272Test; Wang, Q., Liang, X., Lu, A., Wang, B., Fujita, O., Chung, S. H., & Hu, L. (2023). Blowout limits of inclined nonpremixed turbulent jet flames. Proceedings of the Combustion Institute, 39(2), 2389–2398. https://doi.org/10.1016/j.proci.2022.11.009Test; 2-s2.0-85144200723; PROCEEDINGS OF THE COMBUSTION INSTITUTE; http://hdl.handle.net/10754/692991Test; 39; WOS:001019870200001 |
| DOI: | 10.1016/j.proci.2022.11.009 |
| الإتاحة: | https://doi.org/10.1016/j.proci.2022.11.009Test http://hdl.handle.net/10754/692991Test |
| حقوق: | NOTICE: this is the author’s version of a work that was accepted for publication in PROCEEDINGS OF THE COMBUSTION INSTITUTE. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in PROCEEDINGS OF THE COMBUSTION INSTITUTE, [39, 2, (2023-06-07)] DOI:10.1016/j.proci.2022.11.009 . © 2023. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0Test/ ; 2025-06-07 |
| رقم الانضمام: | edsbas.50192329 |
| قاعدة البيانات: | BASE |
| تدمد: | 18732704 15407489 |
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| DOI: | 10.1016/j.proci.2022.11.009 |