Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F15%3APU114090" target="_blank" >RIV/00216305:26210/15:PU114090 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.epj-conferences.org/articles/epjconf/abs/2015/11/epjconf_efm2014_02037/epjconf_efm2014_02037.html" target="_blank" >http://www.epj-conferences.org/articles/epjconf/abs/2015/11/epjconf_efm2014_02037/epjconf_efm2014_02037.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/20159202037" target="_blank" >10.1051/epjconf/20159202037</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412

Popis výsledku v původním jazyce

Cavitation is physical phenomenon of crucial impact on the operation range and service lifetime of the hydraulic machines (pumps, turbines, valves etc.). Experimental measurement of cavitation is expensive and time consuming process, while some important characteristic of the flow are difficult to measure due to the nature of the phenomenon. Current possibilities of computational fluid dynamics provide a way for deeper understanding of cavitation which is important for many applications in the hydraulic machines industry such as expanding operation range or extending lifetime of the hydraulic machines. Simplified model consists of NACA 2412 hydrofoil with 8 degrees angle of attack fixed in between the walls of cavitation tunnel. Present investigation focuses on comparison of vapor volume fractions obtained by 3D CFD simulations and high speed visualization of the real cavitation phenomena. Several operating regimes corresponding to different cavitation numbers are studied with aim to assess the dynamics of the separated cavitating sheets/clouds

Název v anglickém jazyce

Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412

Popis výsledku anglicky

Cavitation is physical phenomenon of crucial impact on the operation range and service lifetime of the hydraulic machines (pumps, turbines, valves etc.). Experimental measurement of cavitation is expensive and time consuming process, while some important characteristic of the flow are difficult to measure due to the nature of the phenomenon. Current possibilities of computational fluid dynamics provide a way for deeper understanding of cavitation which is important for many applications in the hydraulic machines industry such as expanding operation range or extending lifetime of the hydraulic machines. Simplified model consists of NACA 2412 hydrofoil with 8 degrees angle of attack fixed in between the walls of cavitation tunnel. Present investigation focuses on comparison of vapor volume fractions obtained by 3D CFD simulations and high speed visualization of the real cavitation phenomena. Several operating regimes corresponding to different cavitation numbers are studied with aim to assess the dynamics of the separated cavitating sheets/clouds

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/GA13-23550S" target="_blank" >GA13-23550S: Experimentální výzkum a matematické modelování nestacionárních jevů při hydrodynamické kavitaci</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

EPJ Web of Conferences

ISBN

—

ISSN

2100-014X

e-ISSN

—

Počet stran výsledku

8

Strana od-do

1-8

Název nakladatele

EPJ Web of Conferences

Místo vydání

Neuveden

Místo konání akce

Český Krumlov

Datum konání akce

18. 11. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000358249900039