Detail publikačního výsledku

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

KOZÁK, J.; RUDOLF, P.; SEDLÁŘ, M.; HABÁN, V.; HUDEC, M.; HUZLÍK, R.

Original Title

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

English Title

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

Type

Paper in proceedings (conference paper)

Original Abstract

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

English abstract

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

Keywords

CFD, cavitation, hydrofoil, NACA, boundary layer

Key words in English

CFD, cavitation, hydrofoil, NACA, boundary layer

Authors

KOZÁK, J.; RUDOLF, P.; SEDLÁŘ, M.; HABÁN, V.; HUDEC, M.; HUZLÍK, R.

RIV year

2016

Released

06.05.2015

Publisher

EDP Sciences

Book

EPJ Web of Conferences

ISBN

2100-014X

Periodical

EPJ Web of Conferences

Volume

92

Number

5

State

French Republic

Pages from

1

Pages to

8

Pages count

8

URL

http://www.epj-conferences.org/articles/epjconf/abs/2015/11/epjconf_efm2014_02037/epjconf_efm2014_02037.html

Full text in the Digital Library

http://hdl.handle.net/11012/201335

BibTex

@inproceedings{BUT114541,
  author="Jiří {Kozák} and Pavel {Rudolf} and Milan {Sedlář} and Vladimír {Habán} and Martin {Hudec} and Rostislav {Huzlík}",
  title="Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412",
  booktitle="EPJ Web of Conferences",
  year="2015",
  journal="EPJ Web of Conferences",
  volume="92",
  number="5",
  pages="1--8",
  publisher="EDP Sciences",
  doi="10.1051/epjconf/20159202037",
  issn="2100-014X",
  url="http://www.epj-conferences.org/articles/epjconf/abs/2015/11/epjconf_efm2014_02037/epjconf_efm2014_02037.html"
}

Documents

epjconf_efm2014_02037