Head-on Quenching of transient laminar flame : heat flux and quenching distance measurements
| Autor: | M. Bellenoue, S. A. Labuda, J. Sotton, B. Boust |
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| Přispěvatelé: | Laboratoire de combustion et de détonique (LCD), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Quenching
Work (thermodynamics) heat flux density Chemistry General Chemical Engineering Flame structure General Physics and Astronomy Energy Engineering and Power Technology Thermodynamics Laminar flow General Chemistry [PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph] Combustion quenching distance Reaction rate direct vizualisation Fuel Technology Heat flux Head (vessel) |
| Zdroj: | Combustion Science and Technology Combustion Science and Technology, Taylor & Francis, 2005, 177, pp.1305-1322. ⟨10.1080/001022009590950485⟩ |
| ISSN: | 0010-2202 1563-521X |
| Popis: | This work presents results of quenching distance and heat flux measurements during the head-on quenching of transient laminar stoichiometric methane/air flame in the pressure range 0.05–1.7 MPa. The results of direct visualization have been used to measure the quenching distance and to prove the relationship relating the quenching distance and heat flux to the wall over the global combustion reaction rate. It is shown that quenching distance decreases from 0.43 to 0.016 mm with pressure rise from 0.05 to 1.7 MPa. The maximum wall heat flux increases nonlinearly from 0.35 to 2.3 MW/m2 with pressure rise from 0.05 to 1.7 MPa. The dimensionless value of the heat flux depends only slightly on the pressure and decreases from 0.3 to 0.2 with rise of pressure in this pressure range. Flame–wall interaction time is about constant and equal to 0.15–0.155 ms in all ranges of pressure variation. |
| Databáze: | OpenAIRE |
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