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Start Over Search Limiters Available in Library Collection Topic physics Publisher american physical society (aps)
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1. Scaling and Noise in Slow Combustion of Paper

Author

J. Timonen, Tapio Ala-Nissila, J. Maunuksela, Mikko J. Alava, Markko Myllys, Perustieteiden korkeakoulu, School of Science, Teknillisen fysiikan laitos, Department of Applied Physics, Aalto-yliopisto, and Aalto University

Subjects
Physics, paper, General Physics and Astronomy, High resolution, Function (mathematics), Kinetic energy, Combustion, Amplitude, Range (statistics), Statistical physics, kinetic roughening, Scaling, Noise (radio)
Abstract

We present results of high resolution experiments on kinetic roughening of slow combustion fronts in paper, focusing on short length and time scales. Using three different grades of paper, we find that the combustion fronts show apparent spatial and temporal multiscaling at short scales. The scaling exponents decrease as a function of the order of the corresponding correlation functions. The noise affecting the fronts reveals short range temporal and spatial correlations, and non-Gaussian noise amplitudes. Our results imply that the overall behavior of slow combustion fronts cannot be explained by standard theories of kinetic roughening.

Published
2000

2. Kinetic Roughening in Slow Combustion of Paper

Author

Mikko J. Alava, J. Maunuksela, Markko Myllys, Juha Merikoski, Tapio Ala-Nissila, J. Timonen, Perustieteiden korkeakoulu, School of Science, Teknillisen fysiikan laitos, Department of Applied Physics, Aalto-yliopisto, and Aalto University

Subjects
Physics, Statistical Mechanics (cond-mat.stat-mech), paper, Crossover, FOS: Physical sciences, General Physics and Astronomy, Disordered Systems and Neural Networks (cond-mat.dis-nn), Fixed point, Renormalization group, Condensed Matter - Disordered Systems and Neural Networks, Kinetic energy, Noise (electronics), Amplitude, Condensed Matter::Statistical Mechanics, Statistical physics, interface dynamics, slow combustion, kinetic roughening, Constant (mathematics), Scaling, Condensed Matter - Statistical Mechanics
Abstract

Results of experiments on the dynamics and kinetic roughening of one-dimensional slow-combustion fronts in three grades of paper are reported. Extensive averaging of the data allows a detailed analysis of the spatial and temporal development of the interface fluctuations. The asymptotic scaling properties, on long length and time scales, are well described by the Kardar-Parisi-Zhang (KPZ) equation with short-range, uncorrelated noise. To obtain a more detailed picture of the strong-coupling fixed point, characteristic of the KPZ universality class, universal amplitude ratios, and the universal coupling constant are computed from the data and found to be in good agreement with theory. Below the spatial and temporal scales at which a cross-over takes place to the standard KPZ behavior, the fronts display higher apparent exponents and apparent multiscaling. In this regime the interface velocities are spatially and temporally correlated, and the distribution of the magnitudes of the effective noise has a power-law tail. The relation of the observed short-range behavior and the noise as determined from the local velocity fluctuations is discussed., RevTeX v3.1, 13 pages, 12 Postscript figures (uses epsf.sty), 3 tables; submitted to Phys. Rev. E

Published
1997

3. Maunuksela et al. Reply to the comment of Amaral and Makse

Author

Maunuksela, J., Myllys, M., Timonen, J., Kuittu, M., Ala-Nissilä, Tapio, Alava, M. J., Provatas, N., Perustieteiden korkeakoulu, School of Science, Teknillisen fysiikan laitos, Department of Applied Physics, Aalto-yliopisto, and Aalto University

Subjects
burning experiments, Physics, paper
Abstract

Comment on "kinetic roughening in slow combustion of paper" - Maunuksela et al reply A Reply to the Comment by Luis A. Nunes Amaral and Hernan A. Makse.

Published
1998