Application of Tesla Valve’s Obstruction Characteristics to Reverse Fluid in Fish Migration
More and more activities have caused significant damage to the river environment, among which a typical problem of blocked fish migration is constantly attracting people’s attention. Nowadays, fishways are essential hydraulic facilities to solve such problems. Although a different fishway has a part...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/15/1/40 |
| _version_ | 1797431100813869056 |
|---|---|
| author | Guorui Zeng Maosen Xu Jiegang Mou Chenchen Hua Chuanhao Fan |
| author_facet | Guorui Zeng Maosen Xu Jiegang Mou Chenchen Hua Chuanhao Fan |
| author_sort | Guorui Zeng |
| collection | DOAJ |
| description | More and more activities have caused significant damage to the river environment, among which a typical problem of blocked fish migration is constantly attracting people’s attention. Nowadays, fishways are essential hydraulic facilities to solve such problems. Although a different fishway has a particular blocking effect on the water flow, the flow velocity of the vital positions of fish migration in the fishway could still be relatively high locally, which may pose a certain challenge to the fish migration (the higher flow velocity could lead to the increase in migratory energy consumption of fish). Therefore, further exploration of fish passing facilities may be required. As a check valve without movable parts, the Tesla valve is expected to be used in fish passing facilities because of its substantial obstruction to the reverse flow of internal fluid. This paper conducted numerical simulation experiments on the fish passage pipeline designed based on Tesla valves using the RNG (renormalization group) <i>k-ε</i> model. Grass carp were selected as the primary analysis object, and the simulation results were analyzed from the perspective of turbulence characteristics. The results showed that the fish passage pipeline based on the T45-R Tesla valve was better than that on the GMF (Gamboa, Morris and Forster) Tesla valve in velocity control. The velocity at the vital position of T45-R internal fluid was about 20% lower than that of GMF. The results of the velocity cloud diagram showed apparent high-velocity and low-velocity areas in the fish passage pipeline designed based on the T45-R Tesla valve. The high-velocity area was the vital position for fish upstream, and the maximum velocity variation range in this area was 0.904~1.478 m/s. At the same time, the flow in the low-velocity area is almost static water. The analysis illustrated that the resulting velocity environment could provide conditions for grass carp to move upstream successfully. The results of turbulent kinetic energy inside the fish passage pipeline showed that the maximum value of turbulent kinetic energy was only about 0.043 m<sup>2</sup>/s<sup>2</sup>, which could be friendly for fish upstream. In addition, the results show that pressure-related problems could not seem to have an excessive impact on fish migration, such as causing damage. Overall, the results further studied the feasibility of using the Tesla valve as a fish passage pipeline. |
| first_indexed | 2024-03-09T09:38:04Z |
| format | Article |
| id | doaj.art-afafe0669119440d81289d29d710ec07 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T09:38:04Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-afafe0669119440d81289d29d710ec072023-12-02T01:13:24ZengMDPI AGWater2073-44412022-12-011514010.3390/w15010040Application of Tesla Valve’s Obstruction Characteristics to Reverse Fluid in Fish MigrationGuorui Zeng0Maosen Xu1Jiegang Mou2Chenchen Hua3Chuanhao Fan4College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, ChinaCollege of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, ChinaCollege of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, ChinaCollege of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, ChinaCollege of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, ChinaMore and more activities have caused significant damage to the river environment, among which a typical problem of blocked fish migration is constantly attracting people’s attention. Nowadays, fishways are essential hydraulic facilities to solve such problems. Although a different fishway has a particular blocking effect on the water flow, the flow velocity of the vital positions of fish migration in the fishway could still be relatively high locally, which may pose a certain challenge to the fish migration (the higher flow velocity could lead to the increase in migratory energy consumption of fish). Therefore, further exploration of fish passing facilities may be required. As a check valve without movable parts, the Tesla valve is expected to be used in fish passing facilities because of its substantial obstruction to the reverse flow of internal fluid. This paper conducted numerical simulation experiments on the fish passage pipeline designed based on Tesla valves using the RNG (renormalization group) <i>k-ε</i> model. Grass carp were selected as the primary analysis object, and the simulation results were analyzed from the perspective of turbulence characteristics. The results showed that the fish passage pipeline based on the T45-R Tesla valve was better than that on the GMF (Gamboa, Morris and Forster) Tesla valve in velocity control. The velocity at the vital position of T45-R internal fluid was about 20% lower than that of GMF. The results of the velocity cloud diagram showed apparent high-velocity and low-velocity areas in the fish passage pipeline designed based on the T45-R Tesla valve. The high-velocity area was the vital position for fish upstream, and the maximum velocity variation range in this area was 0.904~1.478 m/s. At the same time, the flow in the low-velocity area is almost static water. The analysis illustrated that the resulting velocity environment could provide conditions for grass carp to move upstream successfully. The results of turbulent kinetic energy inside the fish passage pipeline showed that the maximum value of turbulent kinetic energy was only about 0.043 m<sup>2</sup>/s<sup>2</sup>, which could be friendly for fish upstream. In addition, the results show that pressure-related problems could not seem to have an excessive impact on fish migration, such as causing damage. Overall, the results further studied the feasibility of using the Tesla valve as a fish passage pipeline.https://www.mdpi.com/2073-4441/15/1/40fish migrationTesla valveturbulence characteristicsgrass carp |
| spellingShingle | Guorui Zeng Maosen Xu Jiegang Mou Chenchen Hua Chuanhao Fan Application of Tesla Valve’s Obstruction Characteristics to Reverse Fluid in Fish Migration Water fish migration Tesla valve turbulence characteristics grass carp |
| title | Application of Tesla Valve’s Obstruction Characteristics to Reverse Fluid in Fish Migration |
| title_full | Application of Tesla Valve’s Obstruction Characteristics to Reverse Fluid in Fish Migration |
| title_fullStr | Application of Tesla Valve’s Obstruction Characteristics to Reverse Fluid in Fish Migration |
| title_full_unstemmed | Application of Tesla Valve’s Obstruction Characteristics to Reverse Fluid in Fish Migration |
| title_short | Application of Tesla Valve’s Obstruction Characteristics to Reverse Fluid in Fish Migration |
| title_sort | application of tesla valve s obstruction characteristics to reverse fluid in fish migration |
| topic | fish migration Tesla valve turbulence characteristics grass carp |
| url | https://www.mdpi.com/2073-4441/15/1/40 |
| work_keys_str_mv | AT guoruizeng applicationofteslavalvesobstructioncharacteristicstoreversefluidinfishmigration AT maosenxu applicationofteslavalvesobstructioncharacteristicstoreversefluidinfishmigration AT jiegangmou applicationofteslavalvesobstructioncharacteristicstoreversefluidinfishmigration AT chenchenhua applicationofteslavalvesobstructioncharacteristicstoreversefluidinfishmigration AT chuanhaofan applicationofteslavalvesobstructioncharacteristicstoreversefluidinfishmigration |