Experimental and numerical investigation of water film evaporation from horizontal isothermal cone cavity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F19%3A00336754" target="_blank" >RIV/68407700:21220/19:00336754 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.5114737" target="_blank" >http://dx.doi.org/10.1063/1.5114737</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5114737" target="_blank" >10.1063/1.5114737</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental and numerical investigation of water film evaporation from horizontal isothermal cone cavity

Popis výsledku v původním jazyce

Natural convective mass transfer was studied experimentally and numerically. Experimentally it was studied evaporation from cone cavity that remained at steady temperature, ranging from 35°C to 75°C. Water was evaporating to moist air. Analytical equation describing the depletion of mass in cone cavity was derived and used for evaluation of mass flux and averaged mass transfer coefficients from experimental data. Same equation is used also for handling the change of diameter in CFD transient simulation. Moist air was modelled as two component gas, buoyancy forced are modelled by generalized Boussinesq approximation for density variation. Commercial code Star-CCM+ was used for the calculation. From the measured mass transfer coefficients, Sherwood numbers were determined and correlated as a function of Rayleigh number. Obtained correlation was compared with existing correlation with satisfactory discrepancy and extended the previous range of validity to Grm = (0.1 - 104). Several measured cases were also tested numerically with satisfactory difference from experimental data.

Název v anglickém jazyce

Experimental and numerical investigation of water film evaporation from horizontal isothermal cone cavity

Popis výsledku anglicky

Natural convective mass transfer was studied experimentally and numerically. Experimentally it was studied evaporation from cone cavity that remained at steady temperature, ranging from 35°C to 75°C. Water was evaporating to moist air. Analytical equation describing the depletion of mass in cone cavity was derived and used for evaluation of mass flux and averaged mass transfer coefficients from experimental data. Same equation is used also for handling the change of diameter in CFD transient simulation. Moist air was modelled as two component gas, buoyancy forced are modelled by generalized Boussinesq approximation for density variation. Commercial code Star-CCM+ was used for the calculation. From the measured mass transfer coefficients, Sherwood numbers were determined and correlated as a function of Rayleigh number. Obtained correlation was compared with existing correlation with satisfactory discrepancy and extended the previous range of validity to Grm = (0.1 - 104). Several measured cases were also tested numerically with satisfactory difference from experimental data.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20303 - Thermodynamics

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

AIP Conference Proceedings

ISBN

978-0-7354-1858-5

ISSN

0094-243X

e-ISSN

—

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

AIP Conference Proceedings

Místo vydání

New York

Místo konání akce

Liptovský Mikuláš

Datum konání akce

19. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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