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http://hdl.handle.net/10397/106516
Title: | Numerical investigation on flame stabilization in DLR hydrogen supersonic combustor with strut injection | Authors: | Wu, K Zhang, P Yao, W Fan, X |
Issue Date: | 2017 | Source: | Combustion science and technology, 2017, v. 189, no. 12, p. 2154-2179 | Abstract: | Flame stabilization in the DLR hydrogen supersonic combustor with strut injection was numerically investigated by using an in-house large eddy simulation code developed on the OpenFoam platform. To facilitate the comparison and analysis of various hydrogen oxidation mechanisms with different levels of mechanism reduction, the proposed 2D calculation model was validated against both the 3D simulation and the experimental data. The results show that the 2D model can capture the DLR flow and combustion characteristics with satisfactorily quantitative accuracy and significantly less computational load. By virtue of the flow visualization and the analyses of species evolution and heat release, the supersonic combustion in the DLR combustor can be divided into three stages along the streamwise direction: the induction stage where ignition occurs and active radicals are produced, the transition stage through which radicals are advected to the downstream, and the intense combustion stage where most heat release occurs. Furthermore, the sensitivity analysis of key reaction steps identifies the important role of chain carrying and heat release reactions in numerically reproducing the three-stage combustion stabilization mode in the DLR combustor. | Keywords: | Detailed hydrogen oxidation mechanism DLR Flame stabilization Sensitivity analysis Supersonic combustion |
Publisher: | Taylor & Francis Inc. | Journal: | Combustion science and technology | ISSN: | 0010-2202 | EISSN: | 1563-521X | DOI: | 10.1080/00102202.2017.1365847 | Rights: | © 2017 Taylor & Francis This is an Accepted Manuscript of an article published by Taylor & Francis in Combustion Science and Technology on 11 Sep 2017 (published online), available at http://www.tandfonline.com/10.1080/00102202.2017.1365847. |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Zhang_Numerical_Investigation_Flame.pdf | Pre-Published version | 3.65 MB | Adobe PDF | View/Open |
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