Lagrangian Particle Method for Local Scale Dispersion Modeling
A deterministic model is developed for radioactive dispersion analysis based on random-walk Lagrangian Particle Dispersion Method (LPDM). A diagnostic 3dimensional mass-consistent wind-field with a capability to handle complex topography can be used to provide input for particle advection. Turbulent...
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| Published in | Journal of physics. Conference series Vol. 739; no. 1; pp. 12122 - 12128 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Bristol
IOP Publishing
01.08.2016
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| Abstract | A deterministic model is developed for radioactive dispersion analysis based on random-walk Lagrangian Particle Dispersion Method (LPDM). A diagnostic 3dimensional mass-consistent wind-field with a capability to handle complex topography can be used to provide input for particle advection. Turbulent diffusion process of particles is determined based on empirical lateral and linear vertical relationships. Surface-level concentration is calculated for constant unit release from elevated point source. A series of 60-second segmented groups of particles are released in 3600 seconds total duration. Averaged surface-level concentration within a 5 meter surface layer is obtained and compared with available analytical solution. Results from LPDM shows good agreement with the analytical result for vertically constant and varying wind field with the same atmospheric stability. |
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| AbstractList | A deterministic model is developed for radioactive dispersion analysis based on random-walk Lagrangian Particle Dispersion Method (LPDM). A diagnostic 3dimensional mass-consistent wind-field with a capability to handle complex topography can be used to provide input for particle advection. Turbulent diffusion process of particles is determined based on empirical lateral and linear vertical relationships. Surface-level concentration is calculated for constant unit release from elevated point source. A series of 60-second segmented groups of particles are released in 3600 seconds total duration. Averaged surface-level concentration within a 5 meter surface layer is obtained and compared with available analytical solution. Results from LPDM shows good agreement with the analytical result for vertically constant and varying wind field with the same atmospheric stability. |
| Author | Sunarko ZakiSu'ud |
| Author_xml | – sequence: 1 surname: Sunarko fullname: Sunarko email: sunarko@students.itb.ac.id organization: The Center for Energy System Assessment -National Nuclear Energy Agency , Jakarta, Indonesia – sequence: 2 surname: ZakiSu'ud fullname: ZakiSu'ud email: szaki@fi.itb.ac.id organization: Institut Teknologi Bandung Department of Physics, Bandung, Indonesia |
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| Cites_doi | 10.1175/1520-0450(1993)032<0490:VDFSAE>2.0.CO;2 10.1016/S0029-5493(01)00357-0 10.1175/1520-0450(1982)021<0069:RWSOGT>2.0.CO;2 10.1175/1520-0450(1978)017<0312:AMCMFW>2.0.CO;2 10.1175/1520-0450(1999)038<0250:OSOTDD>2.0.CO;2 |
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| DOI | 10.1088/1742-6596/739/1/012122 |
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| References | 1 Vogt K J (2) 1974 4 5 Lam H Y (9) 2005 6 Ermak D R (3) 1995 7 Uliasz M ed Zannetti P (8) 1994 |
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| SubjectTerms | Atmospheric models Empirical analysis Exact solutions Physics Surface layers Turbulent diffusion |
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| Title | Lagrangian Particle Method for Local Scale Dispersion Modeling |
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