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Propagation of Spatial Solitons with Nonlinear Kerr Effect in Thermal Medium
2007
Acta Physica Polonica. A
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In this paper, the propagation and behavior of spatial solitons of inhomogeneous nonlinear Schrödinger equation in thermal medium will be investigated analytically. ...
The theoretical model is established by considering the change of refractive index of medium due to heat deposition of entrance beam. The soliton like solution in such thermal medium was derived. ...
Thermal lensing model The steady state heat conducting equation in the medium with thermal conductivity k is [13] : k∇ 2 T (x, y, z) = −Q(x, y, z), (1) where Q(x, y, z) is heat power density due to input ...
doi:10.12693/aphyspola.112.891
fatcat:sghtrngn55e7nexq3mjpntyfzq
Simulation of Thermoelastic Wave Propagation by Means of a Composite Wave-Propagation Algorithm
2001
Journal of Computational Physics
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Elimination of source terms is made following the method of balancing source terms after independent solution of the heat conduction equation. ...
in inhomogeneous media. ...
THERMOELASTIC WAVES In the thermoelastic case, the equation for the temperature in two dimensions, is solved by means of a simple algorithm for the heat conductivity equation in an inhomogeneous medium ...
doi:10.1006/jcph.2001.6697
fatcat:qxdbm74fpnbb7efzny2ranczqm
Page 5945 of Mathematical Reviews Vol. , Issue 87j
[page]
1987
Mathematical Reviews
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Our models exhibit different propagation regimes tuned by the strength of the inhomogeneity.”
87}:78037
CLASSICAL THERMODYNAMICS, HEAT TRANSFER
87j:80002 Kernévez, Jean-Pierre (F-COMP); 87j:78038 Trubuil ...
This path-integral-Riemann-space (PIRS) approach recovers the exact solutions of the heat conduction and the corresponding electromagnetic wedge problems. ...
Page 2196 of Mathematical Reviews Vol. , Issue 92d
[page]
1992
Mathematical Reviews
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Methods Partial Differential Equations 5 (1989), no. 4, 363-399.
The authors consider the inhomogeneous heat-conduction equation in two space variables on a finite strip. ...
Methods Partial Differential Equations 6 (1990), no. 4, 343-369. The authors consider the inhomogeneous heat-conduction equa- tion in two space variables on a finite strip. ...
Page 1245 of Mathematical Reviews Vol. , Issue 83c
[page]
1983
Mathematical Reviews
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This work is concerned with the propagation of a nonlinear thermal
wave in an inhomogeneous medium. ...
K. 83c:80008 Heat conduction in a truncated wedge of semi-infinite height with circular boundaries. (Spanish summary)
Rev. Técn. Fac. Ingr. Univ. Zulia 4 (1981), no. 1-2, 59-80. ...
Asymptotic Solutions of the Equations for a Viscous Heat-Conducting Compressible Medium
2005
Fluid Dynamics
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Small nonstationary perturbations in a viscous heat-conducting compressible medium are analyzed on the basis of the linearization of the complete system of hydrodynamic equations for small Knudsen numbers ...
It is shown that the density and temperature perturbations (elastic perturbations) satisfy the same wave equation which is an asymptotic limit of the hydrodynamic equations far from the inhomogeneity regions ...
A linearized equation, the asymptotic limit of the initial hydrodynamic equations for a viscous heat-conducting compressible medium, is derived. ...
doi:10.1007/s10697-005-0080-x
fatcat:cuakascsbvaodesr52fkif2dqm
Phototermal Spectra of Inhomogeneous Coatings
2009
Acta Physica Polonica. A
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Then, we discuss the effects of inhomogeneous thermal properties in photothermal amplitude and phase spectra of coatings. ...
Finally, a method for quantitative depth profiling that makes use of prior knowledge about the type of profile existing in a sample to reduce the instabilities associated with the mathematically ill conditioned ...
The main problem arises from the impossibility of solving the inhomogeneous heat conduction equation in a general case. ...
doi:10.12693/aphyspola.116.535
fatcat:q6lkq7qkabfubkvqgmv2viy6dy
Energy Transfer in Pyroelectric Material
[chapter]
2011
Heat Conduction - Basic Research
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Fourier heat conduction equation. ...
Unlike propagation angle θ, γ has its boundary to guarantee the waves are of attenuation. ...
The content of this book covers several up-to-date approaches in the heat conduction theory such as inverse heat conduction problems, non-linear and non-classic heat conduction equations, coupled thermal ...
doi:10.5772/26053
fatcat:saorjtwij5g53cc6hyo2gfpmey
The Influence of Inhomogeneity Present in Layered Biological Structure on Electromagnetic Field Distribution
2011
Communications - Scientific Letters of the University of Zilina
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Acknowledgment The work has been done in the framework of Grant VEGA 1/0761/08 "Design of Microwave Methods for Materials Nondestructive Testing" of the Ministry of Education of the Slovak Republic and ...
The first term on the right-hand side of this equation represents the current that produces a loss (heat) in the material through movement of free charges and bound charges. ...
Wave propagation in biological materials If material conductivity does not equal zero value a material is lossy. ...
doi:10.26552/com.c.2011.1.37-41
fatcat:azmq2vf2wbfmtfbycjs7z5sxoy
Ultrafast-laser-radiation transfer in heterogeneous tissues with the discrete-ordinates method
2003
Applied Optics
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With the inclusion of a small inhomogeneity, such a value will change in line with the property of the embedded inhomogeneity. ...
Reflectivity at the tissue-air interface is calculated by use of Snell's law and the Fresnel equation. ...
radiation-transfer equations ͑RTEs͒ because the effect of time-dependent light propagation is negligible in traditional heat-transfer problems. ...
doi:10.1364/ao.42.002897
pmid:12790438
fatcat:gkhz76qnq5d7rgbr7xdu75s4ha
3D MATHEMATICAL MODEL CHARACTERIZING THE DYNAMICS OF THE TEMPERATURE FIELD OF A WALL STRUCTURE WITH A DOUBLE-SIDED FACING FROM A SAPROPEL-HEMP COMPOSITE MATERIAL
2021
Environment Technology Resources Proceedings of the International Scientific and Practical Conference
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to the unknown velocity of heat propagation along the thickness dimension of the composite sapropel-hemp slab. ...
The proposed model consists of a system of three initial-boundary value problems with respect to the temperature function for each layer, respectively, and one initial-boundary value problem with respect ...
ACKNOWLEDGEMENTS This work is dedicated to the blessed memory of Professor Janis S. Rimshans, Liepaja University. ...
doi:10.17770/etr2021vol3.6648
fatcat:xwzf6k54n5djpanmiitexdzwq4
Page 499 of Mathematical Reviews Vol. , Issue 89A
[page]
1989
Mathematical Reviews
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Summary (translated from the Russian): “We consider the exterior boundary value problem for the Helmholtz equation with respect to a spherical surface with a boundary condition of impedance type with a ...
Summary: “An inverse scattering method to reconstruct simulta- neously the permittivity profile and the conductivity profile of a one-dimensional inhomogeneous medium which makes use of the transverse ...
Page 9308 of Mathematical Reviews Vol. , Issue 2001M
[page]
2001
Mathematical Reviews
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An innovative feature of the theory is not requiring a boundary condition of zero tangential electric field at the conducting surface, but requiring explicitly that the bulk conductivity be taken into ...
Summary: “In a waveguide filled with an inhomogeneous non- stationary medium and of a cross-section with piecewise smooth boundary we single out a system of not monochromatic mode fields generalizing the ...
Plasma and electromagnetic effects in the ionosphere related to the dynamics of charged aerosols in the lower atmosphere
2007
Russian Journal of Physical Chemistry B
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of atmospheric conductivity. ...
The ionosphere is subject to actions of the conduction electric current flowing in the atmosphere-ionosphere circuit. ...
Equation (5.7) can be used to estimate the order of magnitude of the amplitude of plasma inhomogeneities caused by the perturbation of E ionosphere level conductivity. ...
doi:10.1134/s199079310702008x
fatcat:jyveillsdveetdqqnr57zfceyq
Longitudinal spatial inhomogeneities in intrinsic optical bistability due to induced absorption
1988
Journal of the Optical Society of America. B, Optical physics
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(8) for the field equation-, %,% heat-conductivity equation, Eqs. (2) and (3) , together with Eqs. (7) , do not cause bistability. ...
I I I 0 X L o5
04 ated primarily with the output-side heat-conductivity 0 3 boundary conditions. ...
Englund, "Longitudinal conductivity boundary conditions. ...
doi:10.1364/josab.5.000011
fatcat:7mmbeuki2bcsrgziqw7s3ottwq
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