Počet záznamů: 1
Description of Fluid Dynamics and Coupled Transports in Models of a Laminar Flow Diffusion Chamber
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SYSNO ASEP 0398141 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Description of Fluid Dynamics and Coupled Transports in Models of a Laminar Flow Diffusion Chamber Tvůrce(i) Trávníčková, Tereza (UCHP-M) RID, ORCID, SAI
Havlica, Jaromír (UCHP-M) RID, ORCID, SAI
Ždímal, Vladimír (UCHP-M) RID, ORCID, SAIZdroj.dok. Journal of Chemical Physics. - : AIP Publishing - ISSN 0021-9606
Roč. 139, č. 6 (2013), 064701Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova homogeneous nucleation rates ; mass transfer ; n-butanol Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství CEP GAP105/12/0664 GA ČR - Grantová agentura ČR IAA200760905 GA AV ČR - Akademie věd Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000323177900038 EID SCOPUS 84903362685 DOI 10.1063/1.4816963 Anotace The aim of this study is to assess how much the results on ucleation experiments in a laminar flow diffusion chamber (LFDC) are influenced by the complexity of the model of the transport properties. The effects of the type of fluid dynamic model (the steady state compressible Navier-Stokes system for an ideal gas/parabolic profile approximation) and the contributions of the coupled terms describing the Dufour effects and thermodiffusion on the predicted magnitude of the nucleation maxima and its location were investigated. This study was performed on the model of the homogeneous nucleation of an n-butanol-He vapor mixture in a LFDC. The isothermal dependencies of the nucleation rate on supersaturation were determined at three nucleation temperatures: 265 K, 270 K, and 280 K. For this purpose, the experimental LFDC data measured by A. P. Hyvärinen et al. were reevaluated using transport models at different levels of complexity. Our results indicate that the type of fluid dynamical model affects both the position of the nucleation maxima in the LFDC and the maximum value of the nucleation rate. On the other hand, the Dufour effects and thermodiffusion perceptibly influence only the value of the maximal nucleation rate. Its position changes only marginally. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2014
Počet záznamů: 1