Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106458
Title: | Stability of buoyant inverse diffusion methane flames with confinement effects | Authors: | Zhu, X Xia, X Zhang, P |
Issue Date: | 2020 | Source: | Combustion science and technology, 2020, v. 192, no. 9, p. 1650-1667 | Abstract: | Experimental and numerical studies were performed to examine the stability of inverse diffusion flames (IDFs) with the focus on the boundary wall effects. A regime diagram for flame stability was obtained based on the visual characteristics of flames and verified by the simulated flow fields. The boundary wall effects were identified and investigated by simulating the IDFs with different outer burner diameters. It was found that the wall-bounded induced shear flows either reduce the flow instability by vorticity diffusion or enhance it by vorticity convection. Based on the experimental and numerical observations, the mechanism of the boundary wall effects on the stability of buoyant IDFs was explained and further extended to general diffusion flames. | Keywords: | Buoyant flame Instability Inverse diffusion flame Vortex dynamics Wall effects |
Publisher: | Taylor & Francis Inc. | Journal: | Combustion science and technology | ISSN: | 0010-2202 | EISSN: | 1563-521X | DOI: | 10.1080/00102202.2019.1619708 | Rights: | © 2019 Taylor & Francis Group, LLC This is an Accepted Manuscript of an article published by Taylor & Francis in Combustion Science and Technology on 23 May 2019 (published online), available at http://www.tandfonline.com/10.1080/00102202.2019.1619708. |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Zhu_Stability_Buoyant_Inverse.pdf | Pre-Published version | 5.63 MB | Adobe PDF | View/Open |
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