Radiative transfer for incoherent scattering in a semiinfinite inhomogeneous atmosphere containing energy sources

Astrophysics ◽  
1994 ◽  
Vol 36 (4) ◽  
pp. 335-342
Author(s):  
G. A. Arutyunyan
Keyword(s):  
Radiative Transfer ◽  
Incoherent Scattering ◽  
Energy Sources ◽  
Inhomogeneous Atmosphere

scholarly journals Invariant Imbedding and the Radiation Transfer in a Plane-Parallel Inhomogeneous Atmosphere

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Arthur G. Nikoghossian
Keyword(s):  
High Speed ◽  
Radiation Transfer ◽  
Energy Sources ◽  
Invariant Imbedding ◽  
Distributed Energy ◽  
Initial Value ◽  
Radiation Diffusion ◽  
Inhomogeneous Atmosphere ◽  
Plane Parallel ◽  
Transfer Problems

The invariant imbedding technique is applied to the problems of radiation transfer in a plane-parallel inhomogeneous atmosphere. All the parameters which describe the elementary event of scattering and the distribution of the energy sources are allowed to vary with depth. Mathematically, the considered standard problems of the theory are reduced to initial-value problems which are better adapted to capabilities of the modern high speed computers. The reflectance of an atmosphere is shown to play a prominent role in describing the diffusion process since all the other characteristics of the radiation field are expressed through it. Three transfer problems frequently encountered in astrophysical applications are discussed: the radiation diffusion in the source-free medium, in a medium with arbitrarily distributed energy sources, as well as the problem of finding the statistical mean quantities, characteristics of the multiple scattering in the atmosphere.

Transmission function for infrared radiative transfer in an inhomogeneous atmosphere

1977 ◽  
Vol 103 (437) ◽  
pp. 511-517 ◽  
Author(s):  
Jacob G. Kuriyan ◽  
Zvi Shippony ◽  
Subir K. Mitra ◽  
M. G. Wurtele
Keyword(s):  
Radiative Transfer ◽  
Transmission Function ◽  
Inhomogeneous Atmosphere

Continuum radiative transfer in the polar columns of accretion powered pulsars - Incoherent scattering

1990 ◽  
Vol 349 ◽  
pp. 262 ◽  
Author(s):  
David J. Burnard ◽  
Richard I. Klein ◽  
Jonathan Arons
Keyword(s):  
Radiative Transfer ◽  
Incoherent Scattering

scholarly journals A hybrid method for vibroacoustic coupling

2008 ◽  
pp. 689-699
Author(s):  
Emeline Sadoulet-Reboul ◽  
Alain Le Bot ◽  
Joël Perret-Liaudet
Keyword(s):  
Radiative Transfer ◽  
Hybrid Method ◽  
High Frequency ◽  
Low Frequency ◽  
Energy Sources ◽  
High Frequency Range ◽  
Engine Compartment ◽  
Frequency Range ◽  
Transfer Method

hybrid method is proposed to study the noise radiated in the high frequency range by a gearbox inside an engine compartment. Due to its elastodynamic characteristics, the vibratory behaviour of the transmission lies in the low frequency range. However, the noise radiated is rather in the high frequency range facing the size of the acoustical cavity. Thus the proposed hybrid method allows to couple a low-frequency vibratory approach to the radiative transfer method used for the high frequency acoustical calculation. The coupling is realized through equivalent energy sources introduced on the surface of the vibrating structure.

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