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A Computational Fluid Dynamics Approach to Nucleation in the Water−Sulfuric Acid System
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SYSNO ASEP 0346366 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A Computational Fluid Dynamics Approach to Nucleation in the Water−Sulfuric Acid System Tvůrce(i) Herrmann, E. (FI)
Brus, David (UCHP-M) RID, SAI, ORCID
Hyvärinen, A.-P. (FI)
Stratmann, F. (DE)
Wilck, M. (DE)
Lihavainen, H. (FI)
Kulmala, M. (FI)Zdroj.dok. Journal of Physical Chemistry A. - : American Chemical Society - ISSN 1089-5639
Roč. 114, č. 31 (2010), s. 8033-8042Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova fluid dynamics modeling ; kinetic nucleation theory ; relative humidity Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000280523500002 DOI 10.1021/jp103499q Anotace This study presents a computational fluid dynamics modeling approach to investigate the nucleation in the water−sulfuric acid system in a flow tube. On the basis of an existing experimental setup we first establish the effect of convection on the flow profile. We describe the nucleation zone in detail and determine how flow rate and relative humidity affect its characteristics. Experimental nucleation rates are compared to rates gained from classical binary and kinetic nucleation theory as well as cluster activation theory. For low RH values, kinetic theory yields the best agreement with experimental results while binary nucleation best reproduces the experimental nucleation behavior at 50% relative humidity. Particle growth is modeled for an example case at 50% relative humidity. The final simulated diameter is very close to the experimental result. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2011
Počet záznamů: 1