Results 241 to 250 of about 156,000 (294)

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
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

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.
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +2 more sources

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.
openaire   +1 more source

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
openaire   +1 more source