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A Computational Fluid Dynamics Approach to Nucleation in the Water−Sulfuric Acid System
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SYSNO ASEP 0346366 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A Computational Fluid Dynamics Approach to Nucleation in the Water−Sulfuric Acid System Author(s) 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)Source Title Journal of Physical Chemistry A. - : American Chemical Society - ISSN 1089-5639
Roč. 114, č. 31 (2010), s. 8033-8042Number of pages 10 s. Language eng - English Country US - United States Keywords fluid dynamics modeling ; kinetic nucleation theory ; relative humidity Subject RIV CF - Physical ; Theoretical Chemistry CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000280523500002 DOI 10.1021/jp103499q Annotation 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. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2011
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