Počet záznamů: 1
Evaluation of a new method for puff arrival time as assessed through wind tunnel modelling
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SYSNO ASEP 0483047 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Evaluation of a new method for puff arrival time as assessed through wind tunnel modelling Tvůrce(i) Chaloupecká, Hana (UT-L) RID, ORCID, SAI
Jaňour, Zbyněk (UT-L) RID, ORCID
Mikšovský, J. (CZ)
Jurčáková, Klára (UT-L) RID, ORCID
Kellnerová, Radka (UT-L) RID, ORCIDZdroj.dok. Process Safety and Environmental Protection. - : Elsevier - ISSN 0957-5820
Roč. 111, October (2017), s. 194-210Poč.str. 17 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova wind tunnel ; short-term gas leakage ; puff Vědní obor RIV DG - Vědy o atmosféře, meteorologie Obor OECD Meteorology and atmospheric sciences CEP GA15-18964S GA ČR - Grantová agentura ČR Institucionální podpora UT-L - RVO:61388998 UT WOS 000414619500021 EID SCOPUS 85024906446 DOI 10.1016/j.psep.2017.07.006 Anotace Deliberate or accidental gas leakages threaten people′s lives. Short-duration releases of gas are influenced by actual phase of turbulent atmospheric flow and therefore the study of these situations requires multiple repetitions of the leakage under the same mean conditions. Such a set of experiments was conducted in a wind tunnel on a scaled model of an idealized urban canopy created by rectangular buildings with pitched roofs organized into closed courtyards. Concentration time series of high time resolution were measured by a fast flame ionisation detector. The arrival time of gas from short-duration discharges was investigated at a few places of detection. This paper introduces a new method of defining gas arrival time, one not only applicable in the post-processing analysis but also in the operative stage. Moreover, it shows the results of other commonly used gas arrival time definitions (visual and dosage methods and a method utilizing the maximum detected concentration). It was explored both, the change in the arrival time value in individual realisations and places as well as the change in statistical values calculated from ensembles (mean, median, quartiles). Furthermore, the dependence of the definitions of arrival time on their parameters is discussed. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2018
Počet záznamů: 1