Numerical Investigation of Cavitation on Spillways. A Case Study: Aydoghmush dam
Cavitation is among the most complicated and common damages of spillway structures. This phenomenon is controlled by different parameters including the pressure, flow velocity, spillway surface material, operation time, and air flow content. The cavitation index is calculated along the spillway and...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
K. N. Toosi University of Technology
2019-08-01
|
| Series: | Numerical Methods in Civil Engineering |
| Subjects: | |
| Online Access: | https://nmce.kntu.ac.ir/article_160480_f130a7c17db3ee02906b96b6aee4ef07.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850248746723442688 |
|---|---|
| author | M. Barzegari R. Sobhkhiz Foumani M. Isari R. Tarinejad S. A. Alavi |
| author_facet | M. Barzegari R. Sobhkhiz Foumani M. Isari R. Tarinejad S. A. Alavi |
| author_sort | M. Barzegari |
| collection | DOAJ |
| description | Cavitation is among the most complicated and common damages of spillway structures. This phenomenon is controlled by different parameters including the pressure, flow velocity, spillway surface material, operation time, and air flow content. The cavitation index is calculated along the spillway and compared with its critical value using the measured values of the flow’s hydraulic parameters. The high cost of experimental models for determining hydraulic parameters, the time required for developing experimental models, and the ever-increasing capabilities of computational fluid mechanics (CFD) models have led to the use of numerical simulation in the flow analyses. The present study employs ANSYS FLUENT to simulate the flow on the spillway of Aydoghmush Dam (Iran), calculate flow parameters, and determine the cavitation index at the flow rates of 35, 800, 1500, and 1850 m3/s. The standard k-ε equations were applied to model the turbulent flow, while the volume of fluid (VOF) method was employed to determine the flow’s free surface profile. The results showed acceptable consistency between the FLUENT and physical model results. It was also found that cavitation did not occur at any of the flow rates. |
| format | Article |
| id | doaj-art-d3ed5fc8c00f4e6babb4adaa5b69753d |
| institution | OA Journals |
| issn | 2345-4296 2783-3941 |
| language | English |
| publishDate | 2019-08-01 |
| publisher | K. N. Toosi University of Technology |
| record_format | Article |
| series | Numerical Methods in Civil Engineering |
| spelling | doaj-art-d3ed5fc8c00f4e6babb4adaa5b69753d2025-08-20T01:58:37ZengK. N. Toosi University of TechnologyNumerical Methods in Civil Engineering2345-42962783-39412019-08-01411910.52547/nmce.4.1.1160480Numerical Investigation of Cavitation on Spillways. A Case Study: Aydoghmush damM. Barzegari0R. Sobhkhiz Foumani1M. Isari2R. Tarinejad3S. A. Alavi4M.Sc. Student of Civil Engineering Department, Ahar Branch, Islamic Azad University, Ahar, Iran.PhD Student of Civil Engineering Department, University of Qom, Qom. Iran.Ph.D. Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran.Associate Professor, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran.PhD Student of Civil Engineering Department, Boshehr Branch, Islamic Azad University, Boshehr, Iran.Cavitation is among the most complicated and common damages of spillway structures. This phenomenon is controlled by different parameters including the pressure, flow velocity, spillway surface material, operation time, and air flow content. The cavitation index is calculated along the spillway and compared with its critical value using the measured values of the flow’s hydraulic parameters. The high cost of experimental models for determining hydraulic parameters, the time required for developing experimental models, and the ever-increasing capabilities of computational fluid mechanics (CFD) models have led to the use of numerical simulation in the flow analyses. The present study employs ANSYS FLUENT to simulate the flow on the spillway of Aydoghmush Dam (Iran), calculate flow parameters, and determine the cavitation index at the flow rates of 35, 800, 1500, and 1850 m3/s. The standard k-ε equations were applied to model the turbulent flow, while the volume of fluid (VOF) method was employed to determine the flow’s free surface profile. The results showed acceptable consistency between the FLUENT and physical model results. It was also found that cavitation did not occur at any of the flow rates.https://nmce.kntu.ac.ir/article_160480_f130a7c17db3ee02906b96b6aee4ef07.pdfcavitationcavitation indexfluentvofstandard k-εaydoghmush dam spillway |
| spellingShingle | M. Barzegari R. Sobhkhiz Foumani M. Isari R. Tarinejad S. A. Alavi Numerical Investigation of Cavitation on Spillways. A Case Study: Aydoghmush dam Numerical Methods in Civil Engineering cavitation cavitation index fluent vof standard k-ε aydoghmush dam spillway |
| title | Numerical Investigation of Cavitation on Spillways. A Case Study: Aydoghmush dam |
| title_full | Numerical Investigation of Cavitation on Spillways. A Case Study: Aydoghmush dam |
| title_fullStr | Numerical Investigation of Cavitation on Spillways. A Case Study: Aydoghmush dam |
| title_full_unstemmed | Numerical Investigation of Cavitation on Spillways. A Case Study: Aydoghmush dam |
| title_short | Numerical Investigation of Cavitation on Spillways. A Case Study: Aydoghmush dam |
| title_sort | numerical investigation of cavitation on spillways a case study aydoghmush dam |
| topic | cavitation cavitation index fluent vof standard k-ε aydoghmush dam spillway |
| url | https://nmce.kntu.ac.ir/article_160480_f130a7c17db3ee02906b96b6aee4ef07.pdf |
| work_keys_str_mv | AT mbarzegari numericalinvestigationofcavitationonspillwaysacasestudyaydoghmushdam AT rsobhkhizfoumani numericalinvestigationofcavitationonspillwaysacasestudyaydoghmushdam AT misari numericalinvestigationofcavitationonspillwaysacasestudyaydoghmushdam AT rtarinejad numericalinvestigationofcavitationonspillwaysacasestudyaydoghmushdam AT saalavi numericalinvestigationofcavitationonspillwaysacasestudyaydoghmushdam |