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...

Full description

Saved in:
Bibliographic Details
Published inJournal of physics. Conference series Vol. 739; no. 1; pp. 12122 - 12128
Main Authors Sunarko, ZakiSu'ud
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.08.2016
Subjects
Atmospheric models
Empirical analysis
Exact solutions
Physics
Surface layers
Turbulent diffusion
Online AccessGet full text

Cover

More Information
Summary: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.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/739/1/012122