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Showing 1 to 20 of 230 for “"radiative transfer"”.
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Radiative transfer of ultrasound
Radiative transfer theory is used to model the multiple scattering of diffuse ultrasonic waves in two types of random media. The first type is an isotropic, homogeneous medium containing randomly oriented, randomly located scatterers. The scatterers are assumed to be uncorrelated. This assumption …
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Efficient radiative transfer computations in the atmosphere
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology and Physical Oceanography, 1981.
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PROBABILISTIC METHOD IN RADIATIVE TRANSFER AND NEUTRON TRANSPORT PROBLEMS
For solving transfer problems in scattering atmospheres many exact and approximate methods hc1ve so far been proposed. Of them, the probabilistic method of Sobolev and Ueno have proved to be particularly successful in handling both time-dependent and time independent transfer and transport problems …
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Parallel and Adaptive Galerkin Methods for Radiative Transfer Problems
Finite element methods for radiative transfer problems are developed and their implementation on parallel computer architectures is discussed. A posteriori error estimates allow for efficient grid adaptation in two and three space dimensions.
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Evaluation Of A Microwave Radiative Transfer Model For Calculating Sat
… techniques. Mathematical models, known as Radiative Transfer Models (RTM), are developed to calculate the observed radiance (brightness temperature) seen by the remote sensor. The RTM calculated brightness temperature is a function of fourteen environmental parameters, including atmospheric …
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Modelling the Epoch of Reionization with Cosmological Radiative Transfer Simulations
… a hydrodynamical simulation using aton-he, a radiative transfer code I developed for this purpose. The thesis is structured into four sections. The first section details the development of aton-he, focusing on implementing helium physics, active galactic nuclei (AGN) as ionizing sources, …
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Radiative transfer and thermal performance levels in foam insulation boardstocks
The validity of predictive models for the thermal conductivity of foam insulation is established based on the fundamental geometry of the closed-cell foam. The extinction coefficient is experimentally and theoretically determined; the theoretical prediction based on measured geometrical properties …
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Radiative transfer theory for scattering by large cylindrical disk scatterers
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Modeling of polarimetric scattering from vegetation using radiative transfer theory
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Characterizing Exoplanet Atmospheres: From Light-curve Observations to Radiative-Transfer Modeling
… 5 describes the open-source Bayesian Atmospheric Radiative Transfer (BART) code to characterize exoplanet atmospheres. BART combines a thermochemical-equilibrium code, a one-dimensional line-by-line radiative-transfer code, and the Multi-core Markov-chain Monte Carlo statistical module to …
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Polarized Radiative Transfer in the Magnetospheres and Atmospheres of Neutron Stars
Neutron stars are sources of strongly polarized emission in X-rays or soft gamma-rays due to the presence of strong magnetic fields. Radiation transport of soft X-rays in neutron star surface layers is critical to the determination of the emergent anisotropy of light intensity and polarization …
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Atmospheric radiative transfer in multiple scattering conditions. Application to NWP models.
High spectral resolution radiative transfer (RT) codes are essential tools in the study of the radiative energy transfer in the Earth atmosphere and a support for the development of parameterizations for fast RT codes used in climate and weather prediction models. Cirrus clouds cover permanently …
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Radiative Transfer Between Surfaces With Spectral, Directional, and Temperature Dependent Properties
Made available in DSpace on 2014-12-10T22:48:27Z (GMT). No. of bitstreams: 1 7511765.pdf: 4686745 bytes, checksum: 74f75df93e948f9e8af03b71e7ced871 (MD5) Previous issue date: 1974
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Nonreciprocal and Exotic Radiative Transfer in Type-I Magnetic Weyl Semimetals
The classical theory of radiative heat transfer has proven extraordinarily useful, both in advancing fundamental physics through the discovery of quantum mechanics and in developing practical applications. However, the classical theory can break down, opening up new opportunities for energy …
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Radar range profile simulation of isolated trees with radiative transfer theory
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Development of an accurate 3D Monte Carlo broadband atmospheric radiative transfer model
… from which earth's properties are inferred. Radiative energy from the sun and emitted from the earth and atmosphere is redistributed by clouds in one of their most important roles in the atmosphere. Without accurately representing these interactions we greatly decrease our ability to …
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Radiative transfer theory for active and passive remote sensing of sea ice
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Radiative transfer modeling of thermal infrared emissivity spectra: applications to martian regolith observations
… gap in significant advances. To date, no radiative transfer model (semiempirical, exact, or hybrid solution) has been able to adequately predict the nadir emissivity behavior of simple mineral assemblages. Few measurements have been attempted in the laboratory or field regarding …
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A Theoretical Study on the Effect of Curvature on Near-field Radiative Transfer
… electromagnetic wave effects in thermal radiative transfer i.e. wave effects like interference, diffraction, and tunneling effects, that become important when analyzing energy transfer via electromagnetic waves over sub-wavelength distances. In particular, the focus will be on the …
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