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Effect of fuel temperature on flame characteristics of supersonic turbulent combustion
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Jeong-Yeol | - |
dc.contributor.author | Unnikrishnan, Umesh | - |
dc.contributor.author | Hwang, Won-Sub | - |
dc.contributor.author | Jeong, Seung-Min | - |
dc.contributor.author | Han, Sang-Hoon | - |
dc.contributor.author | Kim, Kyu Hong | - |
dc.contributor.author | Yang, Vigor | - |
dc.date.accessioned | 2022-10-26T00:27:53Z | - |
dc.date.available | 2022-10-26T00:27:53Z | - |
dc.date.created | 2022-10-07 | - |
dc.date.issued | 2022-12 | - |
dc.identifier.citation | Fuel, Vol.329, p. 125310 | - |
dc.identifier.issn | 0016-2361 | - |
dc.identifier.uri | https://hdl.handle.net/10371/186691 | - |
dc.description.abstract | A comprehensive numerical study is undertaken to investigate the dynamics of hydrogen-air supersonic turbulent flames in a shear coaxial configuration. The effects of fuel temperature on the flow and flame characteristics are examined systematically. The numerical methodology is based on a hybrid RANS/LES model for compressible, multi-species flows with finite-rate chemical reactions. Results from simulations employing different levels of grid resolution and numerical schemes are compared and validated against experimental data. The importance of adequate grid resolution and high-order numerical schemes to achieve high-fidelity prediction of fine-scale flow features is underscored. In particular, the multi-dimensional high-order oMLP scheme shows remarkable pre-diction capabilities without incurring excessive computational cost. The lifted turbulent flame characteristics with combustion occurring mostly in a premixed mode downstream after turbulent mixing in the shear layer are identified and elaborated. A parametric study is subsequently performed to investigate the effect of fuel tem-perature. It is found that the combustion regime changes from partially-premixed to non-premixed mode as the fuel temperature is increased. The flame width and combustion efficiency increase with increasing fuel tem-perature, due to the enhancement of mixing following the reduced convective Mach number. The most promi-nent effect of fuel temperature is the reduction of flame length, a crucial factor for the design of supersonic combustors. | - |
dc.language | 영어 | - |
dc.publisher | Elsevier BV | - |
dc.title | Effect of fuel temperature on flame characteristics of supersonic turbulent combustion | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.fuel.2022.125310 | - |
dc.citation.journaltitle | Fuel | - |
dc.identifier.wosid | 000860612800002 | - |
dc.identifier.scopusid | 2-s2.0-85136548411 | - |
dc.citation.startpage | 125310 | - |
dc.citation.volume | 329 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Kim, Kyu Hong | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
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