Numerical Investigation of the Internal Flow in a Banki Turbine
The paper refers to the numerical analysis of the internal flow in a hydraulic cross-flow turbine type Banki. A 3D-CFD steady state flow simulation has been performed using ANSYS CFX codes. The simulation includes nozzle, runner, shaft, and casing. The turbine has a specific speed of 63 (metric unit...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2011-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2011/841214 |
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| _version_ | 1832552225100005376 |
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| author | Jesús De Andrade Christian Curiel Frank Kenyery Orlando Aguillón Auristela Vásquez Miguel Asuaje |
| author_facet | Jesús De Andrade Christian Curiel Frank Kenyery Orlando Aguillón Auristela Vásquez Miguel Asuaje |
| author_sort | Jesús De Andrade |
| collection | DOAJ |
| description | The paper refers to the numerical analysis of the internal flow in a hydraulic cross-flow turbine type Banki. A 3D-CFD steady state flow simulation has been performed using ANSYS CFX codes. The simulation includes nozzle, runner, shaft, and casing. The turbine has a specific speed of 63 (metric units), an outside runner diameter of 294 mm. Simulations were carried out using a water-air free surface model and k-ε turbulence model. The objectives of this study were to analyze the velocity and pressure fields of the cross-flow within the runner and to characterize its performance for different runner speeds. Absolute flow velocity angles are obtained at runner entrance for simulations with and without the runner. Flow recirculation in the runner interblade passages and shocks of the internal cross-flow cause considerable hydraulic losses by which the efficiency of the turbine decreases significantly. The CFD simulations results were compared with experimental data and were consistent with global performance parameters. |
| format | Article |
| id | doaj-art-52fdd62a03ef4de9bb09946c00fae02e |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-52fdd62a03ef4de9bb09946c00fae02e2025-02-03T05:59:10ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342011-01-01201110.1155/2011/841214841214Numerical Investigation of the Internal Flow in a Banki TurbineJesús De Andrade0Christian Curiel1Frank Kenyery2Orlando Aguillón3Auristela Vásquez4Miguel Asuaje5Laboratorio de Conversión de Energía Mecánica, Universidad Simón Bolívar, Valle de Sartenejas, Caracas 1080, VenezuelaLaboratorio de Conversión de Energía Mecánica, Universidad Simón Bolívar, Valle de Sartenejas, Caracas 1080, VenezuelaLaboratorio de Conversión de Energía Mecánica, Universidad Simón Bolívar, Valle de Sartenejas, Caracas 1080, VenezuelaLaboratorio de Conversión de Energía Mecánica, Universidad Simón Bolívar, Valle de Sartenejas, Caracas 1080, VenezuelaLaboratorio de Conversión de Energía Mecánica, Universidad Simón Bolívar, Valle de Sartenejas, Caracas 1080, VenezuelaLaboratorio de Conversión de Energía Mecánica, Universidad Simón Bolívar, Valle de Sartenejas, Caracas 1080, VenezuelaThe paper refers to the numerical analysis of the internal flow in a hydraulic cross-flow turbine type Banki. A 3D-CFD steady state flow simulation has been performed using ANSYS CFX codes. The simulation includes nozzle, runner, shaft, and casing. The turbine has a specific speed of 63 (metric units), an outside runner diameter of 294 mm. Simulations were carried out using a water-air free surface model and k-ε turbulence model. The objectives of this study were to analyze the velocity and pressure fields of the cross-flow within the runner and to characterize its performance for different runner speeds. Absolute flow velocity angles are obtained at runner entrance for simulations with and without the runner. Flow recirculation in the runner interblade passages and shocks of the internal cross-flow cause considerable hydraulic losses by which the efficiency of the turbine decreases significantly. The CFD simulations results were compared with experimental data and were consistent with global performance parameters.http://dx.doi.org/10.1155/2011/841214 |
| spellingShingle | Jesús De Andrade Christian Curiel Frank Kenyery Orlando Aguillón Auristela Vásquez Miguel Asuaje Numerical Investigation of the Internal Flow in a Banki Turbine International Journal of Rotating Machinery |
| title | Numerical Investigation of the Internal Flow in a Banki Turbine |
| title_full | Numerical Investigation of the Internal Flow in a Banki Turbine |
| title_fullStr | Numerical Investigation of the Internal Flow in a Banki Turbine |
| title_full_unstemmed | Numerical Investigation of the Internal Flow in a Banki Turbine |
| title_short | Numerical Investigation of the Internal Flow in a Banki Turbine |
| title_sort | numerical investigation of the internal flow in a banki turbine |
| url | http://dx.doi.org/10.1155/2011/841214 |
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