Ray Effects and False Scattering in Improved Discrete Ordinates Method
The improved discrete ordinates method (IDOM) developed in our previous paper is extended to solve radiative transfer in three-dimensional radiative systems with anisotropic scattering medium. In IDOM, radiative intensities in a large number of new discrete directions are calculated by direct integr...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/20/6839 |
| _version_ | 1797514639302459392 |
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| author | Yong Cheng Shuihua Yang Zhifeng Huang |
| author_facet | Yong Cheng Shuihua Yang Zhifeng Huang |
| author_sort | Yong Cheng |
| collection | DOAJ |
| description | The improved discrete ordinates method (IDOM) developed in our previous paper is extended to solve radiative transfer in three-dimensional radiative systems with anisotropic scattering medium. In IDOM, radiative intensities in a large number of new discrete directions are calculated by direct integration of the conventional discrete ordinates method (DOM) results, and radiative heat flux is obtained by integrating radiative intensities in these new discrete directions. Ray effects and false scattering, which tend to compensate each other, are investigated together in IDOM. Results show that IDOM can mitigate both of them effectively with high computation efficiency. Finally, the effect of scattering phase function on radiative transfer is studied. Results of radiative heat flux at boundaries containing media with different scattering phase functions are compared and analyzed. This paper indicates that the IDOM can overcome the shortages of the conventional DOM well while inheriting its advantages such as high computation efficiency and easy implementation. |
| first_indexed | 2024-03-10T06:34:27Z |
| format | Article |
| id | doaj.art-3027c3ce77cb4b20a3a2f529a2bdf92e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T06:34:27Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-3027c3ce77cb4b20a3a2f529a2bdf92e2023-11-22T18:09:37ZengMDPI AGEnergies1996-10732021-10-011420683910.3390/en14206839Ray Effects and False Scattering in Improved Discrete Ordinates MethodYong Cheng0Shuihua Yang1Zhifeng Huang2Key Laboratory of Hydraulic Machinery Transients of Ministry of Education, School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaKey Laboratory of Hydraulic Machinery Transients of Ministry of Education, School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaKey Laboratory of Hydraulic Machinery Transients of Ministry of Education, School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaThe improved discrete ordinates method (IDOM) developed in our previous paper is extended to solve radiative transfer in three-dimensional radiative systems with anisotropic scattering medium. In IDOM, radiative intensities in a large number of new discrete directions are calculated by direct integration of the conventional discrete ordinates method (DOM) results, and radiative heat flux is obtained by integrating radiative intensities in these new discrete directions. Ray effects and false scattering, which tend to compensate each other, are investigated together in IDOM. Results show that IDOM can mitigate both of them effectively with high computation efficiency. Finally, the effect of scattering phase function on radiative transfer is studied. Results of radiative heat flux at boundaries containing media with different scattering phase functions are compared and analyzed. This paper indicates that the IDOM can overcome the shortages of the conventional DOM well while inheriting its advantages such as high computation efficiency and easy implementation.https://www.mdpi.com/1996-1073/14/20/6839ray effectsfalse scatteringimproved discrete ordinates methodanisotropic scattering |
| spellingShingle | Yong Cheng Shuihua Yang Zhifeng Huang Ray Effects and False Scattering in Improved Discrete Ordinates Method Energies ray effects false scattering improved discrete ordinates method anisotropic scattering |
| title | Ray Effects and False Scattering in Improved Discrete Ordinates Method |
| title_full | Ray Effects and False Scattering in Improved Discrete Ordinates Method |
| title_fullStr | Ray Effects and False Scattering in Improved Discrete Ordinates Method |
| title_full_unstemmed | Ray Effects and False Scattering in Improved Discrete Ordinates Method |
| title_short | Ray Effects and False Scattering in Improved Discrete Ordinates Method |
| title_sort | ray effects and false scattering in improved discrete ordinates method |
| topic | ray effects false scattering improved discrete ordinates method anisotropic scattering |
| url | https://www.mdpi.com/1996-1073/14/20/6839 |
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