Novel simulation technique of radioactive aerosol substances propagation into the motionless atmosphere suddenly disseminated by wind to surrounding environment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985556%3A_____%2F22%3A00545515" target="_blank" >RIV/67985556:_____/22:00545515 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0306454921005624?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0306454921005624?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.anucene.2021.108686" target="_blank" >10.1016/j.anucene.2021.108686</a>
Alternative languages
Result language
angličtina
Original language name
Novel simulation technique of radioactive aerosol substances propagation into the motionless atmosphere suddenly disseminated by wind to surrounding environment
Original language description
Accidental discharges of radioactive aerosol into the motionless (calm) atmosphere are examined with aim to quantify ensuing radiological impact on population. This paper offers an advanced methodology that facilitates and accelerates the demanding modelling process in the calm region. The modelling simulates continuous, quite volatile, radioactive releases under strong variations of the atmospheric conditions by a chain of discrete Gaussian pulses. An original idea of insertion of the nested inner cycle enables to comprise the atmosphere state changes during individual pulse propagation. The radioactivity concentration in air at the calm end period becomes a quite non-Gaussian sum of the Gaussian puffs. The novel processing provides a simple and sufficiently precise estimate of its statistical properties. The processing approximates the sum by a single “super-puff” distribution of the Gaussian type. It remarkably facilitates analysis of the ensuing convective transport of the radioactivity package. Instead of many calculating runs of the convective transport for each individual puff, only one run realises. The approximation is based on Bayes’ paradigm (AB). The numerical experiments confirm the acceptability of the AB procedure under the inspected circumstances. The proposed way converts the laborious modelling of radiological fields into a feasible one. It supports practicability of the sampling based methods of uncertainty and sensitivity analyses, as well as the data assimilation methods, especially their inverse modelling techniques based on simulation of multiplex radiological trajectories.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Result continuities
Project
<a href="/en/project/LTC18075" target="_blank" >LTC18075: Distributed rational decision making: cooperation aspects</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Annals of Nuclear Energy
ISSN
0306-4549
e-ISSN
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Volume of the periodical
165
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
108686
UT code for WoS article
000703444900003
EID of the result in the Scopus database
2-s2.0-85114834258