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Published: 2019-03-15
Abstract Views: 98
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DOI: https://doi.org/10.53747/jnst.v9i1.56
Issue
Vol. 9 No. 1 (2019)
Section
Articles
How to Cite
Nguyen , H. Q., Hoang , S. T., Duong , D. T., & Pham , K. L. (2019). Effects of number of simulated particles on the uncertainty in simulation of dispersion of radioactive material using FLEXPART program. Nuclear Science and Technology, 9(1), 21-27. https://doi.org/10.53747/jnst.v9i1.56

Effects of number of simulated particles on the uncertainty in simulation of dispersion of radioactive material using FLEXPART program

Nguyen Hao Quang1, Hoang Sy Than1, Duong Duc Thang2, Pham Kim Long3
1 Viet Nam Atomic Energy Institute, 59 Ly Thuong Kiet, Ha Noi, Viet Nam
2 Institute of Nuclear Science and Technology, 179 Hoang Quoc Viet, Ha Noi, Viet Nam
3 Nuclear Training Center, 140 Nguyen Tuan, Ha Noi, Viet Nam

Main Article Content

Abstract

FLEXPART software simulates atmospheric emissions based on wind-field movements and random disturbances. To simulate random processes, FLEXPART uses a certain number of simulation particles. Changing the number of simulation particles causes a change in the simulated results of the dispersion concentration of the radionuclides. The larger number of simulated particles results in the more accurate simulated results. However, increasing the number of simulated particles results in the increasing of the computational cost. The report presents an assessment of the uncertainty in the
concentration of radionuclides in simulating dispersion of 137Cs and 131I nuclides using FLEXPART software according to the number of simulation particles. The number of simulation particles used in this study are 100, 1000, 5000, 7500, 10000, 15000, 20000, 25000 and 30000 particles / hour. Using the image processing software OpenCV to evaluate the uncertainties of simulated results according to the number of simulated particles used. Evaluation results show that the simulated results are acceptable with the number of simulated particles being of 20000 particles/hour.

Article Details

Keywords

FLEXPART, uncertainty, simulation particle, OpenCV

References

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