Nucleation rates of droplets in supersaturated steam and water vapour-carrier gas mixtures between 200 and 450K

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F18%3A00492782" target="_blank" >RIV/61388998:_____/18:00492782 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1177/0957650918770939" target="_blank" >http://dx.doi.org/10.1177/0957650918770939</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/0957650918770939" target="_blank" >10.1177/0957650918770939</a>

Result language

angličtina

Original language name

Nucleation rates of droplets in supersaturated steam and water vapour-carrier gas mixtures between 200 and 450K

Original language description

We compare experimental nucleation rates for water vapour in various carrier gases, estimated nucleation rates for steam, and nucleation rates obtained from molecular simulations. The data for steam are deduced from empirical adjustments of the classical nucleation theory developed by various authors to reproduce pressure and optical data for condensing steam flows in converging-diverging nozzles and turbine stages. By combining the data for nucleation in carrier gases and the data for steam nucleation, an unprecedented temperature range of 250K is available to study the temperature dependence of nucleation rate. Original results of molecular dynamic simulations for TIP4P/2005 force field in the NVE (system constrained by number of particles, volume and energy) conditions are provided. Correction of classical nucleation theory for non-isothermal nucleation conditions is applied to experimental and simulated data. The nucleation rate data for steam follow a similar temperature trend as the nucleation rate data for water vapour in carrier gases at lower temperatures. The ratio of observed nucleation rates to classical nucleation theory predictions decreases more steeply with temperature than the empirical correlation by Wolk etal. (J Chem Phys 2002, 117: 4954-4960). On the contrary to experimental data, the ratios of nucleation rates computed from molecular simulations to classical nucleation theory predictions do not show a significant temperature trend.

Czech name

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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

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OECD FORD branch

20301 - Mechanical engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

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

Proceedings of the Institution of Mechanical Engineers Part A-Journal of Power and Energy

ISSN

0957-6509

e-ISSN

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Volume of the periodical

232

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

536-549

UT code for WoS article

000441038000009

EID of the result in the Scopus database

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