Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412
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 m...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2015-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20159202037 |
| _version_ | 1819145251582902272 |
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| author | Kozák Jiří Rudolf Pavel Sedlář Milan Habán Vladimír Hudec Martin Huzlík Rostislav |
| author_facet | Kozák Jiří Rudolf Pavel Sedlář Milan Habán Vladimír Hudec Martin Huzlík Rostislav |
| author_sort | Kozák Jiří |
| collection | DOAJ |
| description | 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 |
| first_indexed | 2024-12-22T12:55:04Z |
| format | Article |
| id | doaj.art-51c3c9654da74f0eacadd0a37550f35a |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-22T12:55:04Z |
| publishDate | 2015-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-51c3c9654da74f0eacadd0a37550f35a2022-12-21T18:25:07ZengEDP SciencesEPJ Web of Conferences2100-014X2015-01-01920203710.1051/epjconf/20159202037epjconf_efm2014_02037Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412Kozák Jiří0Rudolf Pavel1Sedlář Milan2Habán Vladimír3Hudec Martin4Huzlík Rostislav5Victor Kaplan Dept. of Fluid Engineering, Faculty of Mechanical Engineering, Brno University of TechnologyVictor Kaplan Dept. of Fluid Engineering, Faculty of Mechanical Engineering, Brno University of TechnologyCentre of Hydraulic ResearchVictor Kaplan Dept. of Fluid Engineering, Faculty of Mechanical Engineering, Brno University of TechnologyVictor Kaplan Dept. of Fluid Engineering, Faculty of Mechanical Engineering, Brno University of TechnologyFaculty of Electrical Engineering and Communications, Brno University of technologyCavitation 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/cloudshttp://dx.doi.org/10.1051/epjconf/20159202037 |
| spellingShingle | Kozák Jiří Rudolf Pavel Sedlář Milan Habán Vladimír Hudec Martin Huzlík Rostislav Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412 EPJ Web of Conferences |
| title | Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412 |
| title_full | Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412 |
| title_fullStr | Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412 |
| title_full_unstemmed | Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412 |
| title_short | Numerical simulation and experimental visualization of the separated cavitating boundary layer over NACA2412 |
| title_sort | numerical simulation and experimental visualization of the separated cavitating boundary layer over naca2412 |
| url | http://dx.doi.org/10.1051/epjconf/20159202037 |
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