Please use this identifier to cite or link to this item: http://repository.vnu.edu.vn/handle/VNU_123/27243
Title: Measurements of propagation speeds and flame instabilities in biomass derived gas-air premixed flames
Authors: Tran, Manh Vu
Won, Sik Song
Jeong, Park
Keywords: Biomass derived gas;Cell formation;Flame instabilities;Propagation speeds;Sensitivity coefficient
Issue Date: 2011
Publisher: PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Citation: ISIKNOWLEDGE
Abstract: Three biomass derived gases (BDGs, named GG-H, GG-L and GG-V), which are derived from industry facilities and can be useful for reducing CO2and the application to combustors, are studied and examined for some basic flame characteristics such as unstretched laminar burning velocity, Markstein length, and cell formation over the entire flame surface. Experiments were conducted in a constant volume combustion chamber using a schlieren system. A better agreement between the measured and predicted unstretched laminar burning velocities is obtained using a suggested reaction mechanism modified from the GRI-Mech 3.0 mechanism. Additionally, cell formations on flame surfaces of the three mixtures were also analyzed and compared using high-speed schlieren images. It is shown that the GG-Heair flames and the GG-Leair flames have similar flame wrinkled surfaces, while the GG-Veair flames shows a stronger cellularity behavior. The effects of each fuel component in mixtures to cellularity are also evaluated by varying the concen-tration of each fuel in the reactant mixtures. The cellular instability is promoted (dimin-ished) with hydrogen enrichment (methane addition); meanwhile the similar behavior is obtained for carbon monoxide addition.
Description: TNS05986 ; INTERNATIONAL JOURNAL OF HYDROGEN ENERGY Volume: 36 Issue: 18 Pages: 12058-12067
URI: http://repository.vnu.edu.vn/handle/VNU_123/27243
http://www.sciencedirect.com/science/article/pii/S0360319911015540
ISSN: 0360-3199
Appears in Collections:Bài báo của ĐHQGHN trong Web of Science

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