Two-dimensional HID light source radiative transfer using discrete ordinates method
| Autor: | Mohamed Bouaoun, Hatem Elloumi, Basma Ghrib |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Gas-discharge lamp Finite volume method Discretization 0211 other engineering and technologies 02 engineering and technology Electron Condensed Matter Physics 01 natural sciences law.invention 010309 optics Mercury-vapor lamp Momentum Atmospheric radiative transfer codes law 021105 building & construction 0103 physical sciences Radiative transfer Atomic physics |
| Zdroj: | Physics of Plasmas. 23:083301 |
| ISSN: | 1089-7674 1070-664X |
| Popis: | This paper shows the implementation of the Discrete Ordinates Method for handling radiation problems in High Intensity Discharge (HID) lamps. Therefore, we start with presenting this rigorous method for treatment of radiation transfer in a two-dimensional, axisymmetric HID lamp. Furthermore, the finite volume method is used for the spatial discretization of the Radiative Transfer Equation. The atom and electron densities were calculated using temperature profiles established by a 2D semi-implicit finite-element scheme for the solution of conservation equations relative to energy, momentum, and mass. Spectral intensities as a function of position and direction are first calculated, and then axial and radial radiative fluxes are evaluated as well as the net emission coefficient. The results are given for a HID mercury lamp on a line-by-line basis. A particular attention is paid on the 253.7 nm resonance and 546.1 nm green lines. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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