Zobrazeno 1 - 10
of 59
pro vyhledávání: '"F. Clouet"'
Autor:
J.-F. Clouet
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 66:437-453
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0db0dc3c6d3996fb9c4de0706abae00
https://doi.org/10.1016/s0022-4073(99)00175-2
https://doi.org/10.1016/s0022-4073(99)00175-2
Publikováno v:
SIAM Journal on Applied Mathematics. 60:2143-2181
We study the scattering of an incident wave by a composite medium with periodic microstructure in a slab geometry. We compute the expansion on the wave field in powers of the parameter $\epsilon=d \lambda$, where d is the characteristic scale of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1780f647bd51d3d8b7ea4724c1477459
https://doi.org/10.1137/s0036139998342818
https://doi.org/10.1137/s0036139998342818
Autor:
J.-F. Clouet
Publikováno v:
SIAM Journal on Applied Mathematics. 58:1604-1621
We address the problem of diffusion approximation of a transport process in a random mixture of diffusive and nondiffusive materials. We show that the diffusion approximation is valid provided that some hypotheses on the geometrical structure of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffa5e387fb8f8d0e551ad5eb25d4add4
https://doi.org/10.1137/s0036139996312715
https://doi.org/10.1137/s0036139996312715
Autor:
J.-F. Clouet
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 58:33-43
We address the problem of the validity of the Rosseland approximation in a binary mixture when the opacities of the two materials exhibit a high contrast ratio. We derive a new formulation for the set of radiative equations. Some numerical simulation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffe9ac919a9d8ee867b1b6c94a2fcea3
https://doi.org/10.1016/s0022-4073(97)00041-1
https://doi.org/10.1016/s0022-4073(97)00041-1
Autor:
J. F. Clouet, Jean-Pierre Fouque
Publikováno v:
Wave Motion. 25:361-368
In the recent years a considerable amount of mathematical work has been devoted to the study of reflected signals obtained by the propagation of pulses in randomly layered media. We refer to [M. Asch, W. Kohler, G. Papanicolaou, M. Postel and B. Whit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aab04f38bfdad3a00cc7d063d7911d6e
https://doi.org/10.1016/s0165-2125(97)00002-4
https://doi.org/10.1016/s0165-2125(97)00002-4
Autor:
J. F. Clouet, Komla Domelevo
Publikováno v:
Mathematical Models and Methods in Applied Sciences. :239-263
This paper studies the modeling of the effect of turbulence on spray. The spray satisfies a kinetic equation. The use of the method of characteristics gives under certain assumptions the solution of the problem. When the gas velocity is modeled by us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c320e62af3f483b657af3ac0f688a56
https://doi.org/10.1142/s0218202597000153
https://doi.org/10.1142/s0218202597000153
Publikováno v:
SIAM Journal on Applied Mathematics. 56:1445-1470
The parabolic or forward scattering approximation has been used extensively in the study of wave propagation. This approximation is combined with a Gaussian white noise approximation for waves propagating in a random medium. The validity of this appr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ec586ab950afc6619c767c5d9d7dbf4
https://doi.org/10.1137/s0036139995280245
https://doi.org/10.1137/s0036139995280245
Publikováno v:
Wave Motion. 22:145-170
Estimation of power spectra is a central question in signal analysis and its applications such as Geophysics. This is classical for stationary signals for which the power spectral density, i.e. the Fourier transform of the covariance, is defined as a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::711261374d87676a311cbcf7eb459db4
https://doi.org/10.1016/0165-2125(95)00026-f
https://doi.org/10.1016/0165-2125(95)00026-f
Publikováno v:
Plasma Chemistry and Plasma Processing. 15:173-198
The surface treatment of different polymers and their corresponding model surfaces in the flowing afterglow of an oxygen microwave plasma is investigated. The concentration profiles of tire long-lived species issued from the plasma are measured and c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99780562c3c101e338f959310df379f6
https://doi.org/10.1007/bf01459695
https://doi.org/10.1007/bf01459695
Publikováno v:
Mathematics and Computers in Simulation. 38:183-188
We present a new method based on wavelet transform for the estimation of the power spectrum for a class of non-stationary signals arising in the analysis of random media. Using a convergence result for this signal we can reduce the estimation of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f09b4fc02aaa1c63ed65162bb6c78dc3
https://doi.org/10.1016/0378-4754(93)e0081-f
https://doi.org/10.1016/0378-4754(93)e0081-f