Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Roux, S. G."'
Autor:
Engelbrecht, J. A. A.1 Japie.Engelbrecht@mandela.ac.za, Le Roux, S. G.2, Minnaar, E. G.1, Goosen, W. E.1
Publikováno v:
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie. 2023, Vol. 42 Issue 1, p88-93. 6p.
Textures in images can often be well modeled using self-similar processes while they may at the same time display anisotropy. The present contribution thus aims at studying jointly selfsimilarity and anisotropy by focusing on a specific classical cla
Externí odkaz:
http://arxiv.org/abs/1305.4384
Publikováno v:
Europhysics Letters (EPL) 90 (2010) 50007
The statistics of signal increments are commonly used in order to test for possible intermittent properties in experimental or synthetic data. However, for signals with steep power spectra [i.e., $E(\omega) \sim \omega^{-n}$ with $n \geq 3$], the inc
Externí odkaz:
http://arxiv.org/abs/1007.3805
Using standard signal processing tools, we experimentally report that intermittency of wave turbulence on the surface of a fluid occurs even when two typical large-scale coherent structures (gravity wave breakings and bursts of capillary waves on ste
Externí odkaz:
http://arxiv.org/abs/1005.0442
Autor:
le Roux, S. G.
Publikováno v:
South African Journal of Higher Education; Apr2024, Vol. 38 Issue 2, p176-195, 20p
Autor:
ICTR, Arneodo, A., Benzi, R., Berg, J., Biferale, L., Bodenschatz, E., Busse, A., Calzavarini, E., Castaing, B., Cencini, M., Chevillard, L., Fisher, R. T., Grauer, R., Homann, H., Lamb, D., Lanotte, A. S., Leveque, E., Luethi, B., Mann, J., Mordant, N., Mueller, W. -C., Ott, S., Ouellette, N. T., Pinton, J. -F., Pope, S. B., Roux, S. G., Toschi, F., Xu, H., Yeung, P. K.
Publikováno v:
Phys. Rev. Lett. 100, 254504 (2008)
We present a collection of eight data sets, from state-of-the-art experiments and numerical simulations on turbulent velocity statistics along particle trajectories obtained in different flows with Reynolds numbers in the range $R_\lambda \in [120:74
Externí odkaz:
http://arxiv.org/abs/0802.3776
We study the roughness of a crack interface in a sheet of paper. We distinguish between slow (sub-critical) and fast crack growth regimes. We show that the fracture roughness is different in the two regimes using a new method based on a multifractal
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607729
Publikováno v:
Physical Review Letters, 95, 064501 (2005).
We analyze the statistics of turbulent velocity fluctuations in the time domain. Three cases are computed numerically and compared: (i) the time traces of Lagrangian fluid particles in a (3D) turbulent flow (referred to as the "dynamic" case); (ii) t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507060
Publikováno v:
Physical Review Letters, 91, 214502, (2003)
We use the multifractal formalism to describe the effects of dissipation on Lagrangian velocity statistics in turbulent flows. We analyze high Reynolds number experiments and direct numerical simulation (DNS) data. We show that this approach reproduc
Externí odkaz:
http://arxiv.org/abs/cond-mat/0310105
Publikováno v:
Philosophical Transactions: Mathematical, Physical and Engineering Sciences, 1999 Sep . 357(1760), 2415-2438.
Externí odkaz:
https://www.jstor.org/stable/55171