A1 Journal article (refereed)
Effect of a columnar defect on the shape of slow-combustion fronts (2003)
Myllys, M., Maunuksela, J., Merikoski, J., Timonen, J., Horváth, V. K., Ha, ., & Nijs, M. D. (2003). Effect of a columnar defect on the shape of slow-combustion fronts. Physical review E : Statistical, nonlinear, and soft matter physics, 68(5), 1-7. https://doi.org/10.1103/physreve.68.051103
JYU authors or editors
Publication details
All authors or editors: Myllys, Markko; Maunuksela, Jussi; Merikoski, Juha; Timonen, Jussi; Horváth, V. K.; Ha, Meesoon; Nijs, Marcel den
Journal or series: Physical review E : Statistical, nonlinear, and soft matter physics
ISSN: 1539-3755
eISSN: 1550-2376
Publication year: 2003
Publication date: 07/10/2003
Volume: 68
Issue number: 5
Pages range: 1-7
Article number: 051103
Publisher: American Physical Society
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1103/physreve.68.051103
Publication open access: Not open
Publication channel open access:
Abstract
We report experimental results for the behavior of slow-combustion fronts in the presence of a columnar defect with enhanced or reduced driving, and compare them with those of mean-field theory. We also compare them with simulation results for an analogous problem of driven flow of particles with hard-core repulsion (ASEP) and a single defect bond with a different hopping probability. The difference in the shape of the front profiles for enhanced vs reduced driving in the defect clearly demonstrates the existence of a Kardar-Parisi-Zhang-type nonlinear term in the effective evolution equation for the slow-combustion fronts. We also find that slow-combustion fronts display a faceted form for large enough enhanced driving, and that there is a corresponding increase then in the average front speed. This increase in the average front speed disappears at a nonzero enhanced driving in agreement with the simulated behavior of the ASEP model.
Keywords: combustion (passive); paper; physical properties
Free keywords: materiaalifysiikka
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Ministry reporting: Yes
Preliminary JUFO rating: Not rated
