Sensitivity of puff characteristics to maximum-concentration-based definition of departure time

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F18%3A00496764" target="_blank" >RIV/61388998:_____/18:00496764 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0950423018301499?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0950423018301499?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jlp.2018.09.007" target="_blank" >10.1016/j.jlp.2018.09.007</a>

Result language

angličtina

Original language name

Sensitivity of puff characteristics to maximum-concentration-based definition of departure time

Original language description

During a hazardous situation, its dangerousness has to be estimated. An important category of such situations is the one in which hazardous gas clouds are released into the atmosphere. The gas clouds are described by their characteristics at exposed locations. But their values are usually dependent on the parameters utilized in their definitions. Hence, the aim of this paper is to examine how a choice of a parameter value in a definition of departure time can affect its value. Moreover, it evaluates how this change influences other characteristics which utilize the departure time in their definitions. To study these situations, wind-tunnel experiments of short-duration gas leakages were conducted. The ground-level leakages of ethane were performed on a model of an idealized urban canopy. The model was composed of houses with pitched roofs organized into closed courtyards. Concentrations were measured by a fast flame ionisation detector. The experiments were repeated about 400 times at each measurement position to get statistically representative datasets. In the analysis, two departure time definitions based on a detected maximum concentration with various parameters were utilized. Moreover, other derived puff characteristics were computed. The results showed that when a suitable range of parameters is used, the differences in mean departure times are significant. In contrast, some other characteristics which use puff departure times in their definitions (e.g. mean dosage) are usually not significantly different.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10509 - Meteorology and atmospheric sciences

Project

<a href="/en/project/GA15-18964S" target="_blank" >GA15-18964S: Experimental study of organized structures in turbulent boundary layer with free-stream turbulence</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Loss Prevention in the Process Industries

ISSN

0950-4230

e-ISSN

—

Volume of the periodical

56

Issue of the periodical within the volume

November

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

242-253

UT code for WoS article

000454378300024

EID of the result in the Scopus database

2-s2.0-85053813524