Imaging and diagnostics of turbulent methane-air premixed flames by acetone-OH simultaneous PLIF |
| |
| Authors: | Y Nakamura S Manome H Yamashita |
| |
| Institution: | (1) Division of Mechanical and Space Engineering, Hokkaido University, N 13 W 8, Kita-ku, Sapporo 060-8628, Japan;(2) Department of Mechanical, Aerospace, and Materials Engineering, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran 050-8585, Japan |
| |
| Abstract: | A strategy of diagnostics of ultra-lean combustion based on acetone-OH simultaneous PLIF is presented. Acetone seeded in the
fuel flow and combustion-generated OH work for a marker of \ldunburned\rd and \ldburnt\rd zones, respectively. Since acetone
and OH does not coexist when the proper combustion takes place, the signal \ldvalley\rd (dark zone) between acetone and OH
fluorescence can be detected, which corresponds to flame zone; representative of the combustion status. System required for
current imaging technique is one-laser and one-detector combination with \ldturned\rd band-pass filter. Transmittance characteristics
of the filter and acetone-seeding rate are key issues to attain clear imaging, and we found that there is proper combination
of them for that purpose. Imaging demonstration for the turbulent premixed flames shows the usefulness and applicability of
this scheme on complex flame diagnostics: unique flame broken flame structure (\ldunburned\rd or \ldburnt\rd islands exist
separately) are clearly obtained by this approach. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
