Results 241 to 250 of about 156,482 (292)

Radiative Exergy Transfer Equation

Journal of Thermophysics and Heat Transfer, 2007
A = surface area of the opaque solid boundary a = spectral radiation exergy loss per unit surface a = spectral radiation exergy loss per unit volume c = speed of light eM; = local net exergy increment in the wall medium due to absorbing spectral radiation heat eR; = local net increment of spectral radiation exergy in the radiative field at the opaque ...
L. H. Liu, S. X. Chu
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Refractive radiative transfer equation

ACM Transactions on Graphics, 2014
We introduce a refractive radiative transfer equation to the graphics community for the physically based rendering of participating media that have a spatially varying index of refraction. We review principles of geometric nonlinear optics that are crucial to discuss a more generic light transport equation.
Ament, Marco, Bergmann, Christoph, Weiskopf, Daniel   +2 more
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Basic Equations for Radiative Transfer

2020
A light-ray (a bundle of photons) travels through and interacts with gaseous materials, via emission, absorption, and scattering. The intensity of a light-ray obeys a linear integro-differential equation, the so-called radiative transfer equation, which is just the Boltzmann equation for photons.
Shoji Kato, Jun Fukue
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Half-Moment Closure for Radiative Transfer Equations

Journal of Computational Physics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dubroca, B., Klar, A.
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Coupled radiative transfer equation and diffusion approximation

SPIE Proceedings, 2005
A coupled radiative transfer equation and diffusion approximation model for photon migration in tissues is proposed. The light propagation is modeled with the radiative transfer equation in sub-domains in which the assumptions of the diffusion approximation are not valid and the diffusion approximation is used elsewhere in the domain.
Tanja Tarvainen, Marko Vauhkonen, Ville Kolehmainen, Jari P. Kaipio   +3 more
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Validity conditions for the radiative transfer equation

Journal of the Optical Society of America A, 2003
We compare the radiative transfer equation for media with constant refractive index with the radiative transfer equation for media with spatially varying refractive indices [J. Opt. A Pure App. Opt. 1, L1 (1999)] and obtain approximate conditions under which the former equation is accurate for modeling light propagation in scattering media with ...
Luis, Martí-López, Jorge, Bouza-Domínguez, Jeremy C, Hebden, Simon R, Arridge, René A, Martínez-Celorio   +4 more
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Analytical Solutions of Model Kinetic Radiative Transfer Equations and Energy Equation

Computational Mathematics and Mathematical Physics, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Moiseev, N. Ya., Shmakov, V. M.
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Approximate Scalar Equations for Polarized Radiative Transfer

Advances in Optical Imaging and Photon Migration, 1998
An asymptotic analysis of the radiative transfer equation with polarization is developed that leads to a renormalized scalar equation for the total specific intensity of radiation I, the first Stokes parameter, in three-dimensional geometries. The resulting scalar equation can be used without the complexity of performing vector radiative computations ...
G. C. Pomraning, N. J. McCormick
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The tensor radiative transfer equation

Journal of Physics A: Mathematical and General, 2000
Summary: The vector radiative transfer equation is used for the solution of numerous problems in the field of random media optics. It describes the transformation of the Stokes vector of a light beam due to its propagation and scattering in a medium. However, the Stokes vector depends on the choice of a coordinate system. Thus, one needs to account for
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Radiative transfer equation for multiple diffraction

The Journal of the Acoustical Society of America, 2005
This paper aims to apply the radiative transfer method to acoustical diffraction by obstacles. Some fictitious sources are introduced at diffracting wedges and a transfer equation based on energy balance determines the diffracted powers. It leads to a set of linear equations on diffracted powers which can be solved in a finite number of steps.
Emeline Reboul, Alain Le Bot, Joël Perret-Liaudet   +2 more
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