Optimized Blade Design of Counter-Rotating-Type Pump-Turbine Unit Operating in Pump and Turbine Modes
In this study, a counter-rotating-type pump-turbine unit was optimized to improve the pump and turbine mode efficiencies simultaneously. Numerical analysis was carried out by solving three-dimensional Reynolds-averaged Navier–Stokes equations using the shear stress turbulence model. The hub and tip...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2018/6069780 |
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| author | Jin-Woo Kim Jun-Won Suh Young-Seok Choi Kyoung-Yong Lee Toshiaki Kanemoto Jin-Hyuk Kim |
| author_facet | Jin-Woo Kim Jun-Won Suh Young-Seok Choi Kyoung-Yong Lee Toshiaki Kanemoto Jin-Hyuk Kim |
| author_sort | Jin-Woo Kim |
| collection | DOAJ |
| description | In this study, a counter-rotating-type pump-turbine unit was optimized to improve the pump and turbine mode efficiencies simultaneously. Numerical analysis was carried out by solving three-dimensional Reynolds-averaged Navier–Stokes equations using the shear stress turbulence model. The hub and tip blade angles of the rear impeller (in the pump mode) were selected as the design variables by conducting a sensitivity test. An optimization process based on steady flow analysis was conducted using a radial basis neural network surrogate model with Latin hypercube sampling. The pump and turbine mode efficiencies of the unit were selected as the objective functions and they combined into a single specific objective function with the weighting factors. Consequently, the pump and turbine mode efficiencies of the optimum design increased simultaneously at overall range of flow rate, except for low flow rate of turbine mode, compared to the reference design. |
| format | Article |
| id | doaj-art-2fd5d50d98494c7abb56a2487bda81a9 |
| institution | OA Journals |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-2fd5d50d98494c7abb56a2487bda81a92025-08-20T02:07:57ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342018-01-01201810.1155/2018/60697806069780Optimized Blade Design of Counter-Rotating-Type Pump-Turbine Unit Operating in Pump and Turbine ModesJin-Woo Kim0Jun-Won Suh1Young-Seok Choi2Kyoung-Yong Lee3Toshiaki Kanemoto4Jin-Hyuk Kim5Advanced Energy and Technology, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of KoreaThermal & Fluid System R&D Group, Korea Institute of Industrial Technology, 89 Yangdaegiro-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si, Chungcheongnam-do 31056, Republic of KoreaAdvanced Energy and Technology, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of KoreaThermal & Fluid System R&D Group, Korea Institute of Industrial Technology, 89 Yangdaegiro-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si, Chungcheongnam-do 31056, Republic of KoreaInstitute of Ocean Energy, Saga University, 1-Honjo Machi, Saga-shi, Saga 840-8502, JapanAdvanced Energy and Technology, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of KoreaIn this study, a counter-rotating-type pump-turbine unit was optimized to improve the pump and turbine mode efficiencies simultaneously. Numerical analysis was carried out by solving three-dimensional Reynolds-averaged Navier–Stokes equations using the shear stress turbulence model. The hub and tip blade angles of the rear impeller (in the pump mode) were selected as the design variables by conducting a sensitivity test. An optimization process based on steady flow analysis was conducted using a radial basis neural network surrogate model with Latin hypercube sampling. The pump and turbine mode efficiencies of the unit were selected as the objective functions and they combined into a single specific objective function with the weighting factors. Consequently, the pump and turbine mode efficiencies of the optimum design increased simultaneously at overall range of flow rate, except for low flow rate of turbine mode, compared to the reference design.http://dx.doi.org/10.1155/2018/6069780 |
| spellingShingle | Jin-Woo Kim Jun-Won Suh Young-Seok Choi Kyoung-Yong Lee Toshiaki Kanemoto Jin-Hyuk Kim Optimized Blade Design of Counter-Rotating-Type Pump-Turbine Unit Operating in Pump and Turbine Modes International Journal of Rotating Machinery |
| title | Optimized Blade Design of Counter-Rotating-Type Pump-Turbine Unit Operating in Pump and Turbine Modes |
| title_full | Optimized Blade Design of Counter-Rotating-Type Pump-Turbine Unit Operating in Pump and Turbine Modes |
| title_fullStr | Optimized Blade Design of Counter-Rotating-Type Pump-Turbine Unit Operating in Pump and Turbine Modes |
| title_full_unstemmed | Optimized Blade Design of Counter-Rotating-Type Pump-Turbine Unit Operating in Pump and Turbine Modes |
| title_short | Optimized Blade Design of Counter-Rotating-Type Pump-Turbine Unit Operating in Pump and Turbine Modes |
| title_sort | optimized blade design of counter rotating type pump turbine unit operating in pump and turbine modes |
| url | http://dx.doi.org/10.1155/2018/6069780 |
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