Computational Analysis on Numerical Simulation of Internal Flow Physics for Pump as Turbine in Renewable Small Hydro Energy Generation
Energy contributes significantly in almost all aspects of human life as well as economic activities and plays a crucial role in the infrastructural development of a county to alleviate poverty. Generating energy from a renewable source such as small hydropower through the application of pump operati...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Complexity |
| Online Access: | http://dx.doi.org/10.1155/2020/8869766 |
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| author | Du Jianguo Daniel Adu Emmanuel Acheaw Shakir Hafeez Eric Ofosu Antw |
| author_facet | Du Jianguo Daniel Adu Emmanuel Acheaw Shakir Hafeez Eric Ofosu Antw |
| author_sort | Du Jianguo |
| collection | DOAJ |
| description | Energy contributes significantly in almost all aspects of human life as well as economic activities and plays a crucial role in the infrastructural development of a county to alleviate poverty. Generating energy from a renewable source such as small hydropower through the application of pump operating as a turbine mode called Pump as Turbine is one of the best alternatives to provide clean and inexpensive energy. Using Pump as Turbine helps in generating reasonably priced hydroelectric power for communities in underdeveloped counties. This study investigates the effects of internal flow behaviour and performance of Pump as Turbine under different rotational speed and flow rate. The rotational speed is an essential physical parameter as it affects the Pump as Turbine operation. A model-specific speed centrifugal pump model with head 32 (m), flow rate of 12.5 (m3/h) and the rotational speed of 2900 rpm, has been selected for the study. Numerical simulations have been conducted using the k-ω turbulence model to solve three-dimensional (3D) equations. The pump mode experimental data were used to confirm the results for better analysis. The results predicted that vortex and turbulent kinetic energy increase per rotational speed increase. Also, at the higher rotational speed, very high recirculation of flow is detected at the blade suction chamber, although the pressure side has a smooth flow. This study provides beneficial information which will serve as a reference to help improve PAT performance along with selecting PAT for a small hydropower site. Future works will consider the impact of blade thickness and cavitation in Pump as Turbine. |
| format | Article |
| id | doaj-art-9176b2816965462887130f25b1fbbbf2 |
| institution | Kabale University |
| issn | 1076-2787 1099-0526 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Complexity |
| spelling | doaj-art-9176b2816965462887130f25b1fbbbf22025-02-03T05:51:17ZengWileyComplexity1076-27871099-05262020-01-01202010.1155/2020/88697668869766Computational Analysis on Numerical Simulation of Internal Flow Physics for Pump as Turbine in Renewable Small Hydro Energy GenerationDu Jianguo0Daniel Adu1Emmanuel Acheaw2Shakir Hafeez3Eric Ofosu Antw4School of Management Science & Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Management Science & Engineering, Jiangsu University, Zhenjiang 212013, ChinaDepartment of Energy and Environmental Engineering University of Energy and Natural Resources Sunyani, Sunyani, GhanaDepartment of Management Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Khyber-Pakhtunkhwa, PakistanDepartment of Energy and Environmental Engineering University of Energy and Natural Resources Sunyani, Sunyani, GhanaEnergy contributes significantly in almost all aspects of human life as well as economic activities and plays a crucial role in the infrastructural development of a county to alleviate poverty. Generating energy from a renewable source such as small hydropower through the application of pump operating as a turbine mode called Pump as Turbine is one of the best alternatives to provide clean and inexpensive energy. Using Pump as Turbine helps in generating reasonably priced hydroelectric power for communities in underdeveloped counties. This study investigates the effects of internal flow behaviour and performance of Pump as Turbine under different rotational speed and flow rate. The rotational speed is an essential physical parameter as it affects the Pump as Turbine operation. A model-specific speed centrifugal pump model with head 32 (m), flow rate of 12.5 (m3/h) and the rotational speed of 2900 rpm, has been selected for the study. Numerical simulations have been conducted using the k-ω turbulence model to solve three-dimensional (3D) equations. The pump mode experimental data were used to confirm the results for better analysis. The results predicted that vortex and turbulent kinetic energy increase per rotational speed increase. Also, at the higher rotational speed, very high recirculation of flow is detected at the blade suction chamber, although the pressure side has a smooth flow. This study provides beneficial information which will serve as a reference to help improve PAT performance along with selecting PAT for a small hydropower site. Future works will consider the impact of blade thickness and cavitation in Pump as Turbine.http://dx.doi.org/10.1155/2020/8869766 |
| spellingShingle | Du Jianguo Daniel Adu Emmanuel Acheaw Shakir Hafeez Eric Ofosu Antw Computational Analysis on Numerical Simulation of Internal Flow Physics for Pump as Turbine in Renewable Small Hydro Energy Generation Complexity |
| title | Computational Analysis on Numerical Simulation of Internal Flow Physics for Pump as Turbine in Renewable Small Hydro Energy Generation |
| title_full | Computational Analysis on Numerical Simulation of Internal Flow Physics for Pump as Turbine in Renewable Small Hydro Energy Generation |
| title_fullStr | Computational Analysis on Numerical Simulation of Internal Flow Physics for Pump as Turbine in Renewable Small Hydro Energy Generation |
| title_full_unstemmed | Computational Analysis on Numerical Simulation of Internal Flow Physics for Pump as Turbine in Renewable Small Hydro Energy Generation |
| title_short | Computational Analysis on Numerical Simulation of Internal Flow Physics for Pump as Turbine in Renewable Small Hydro Energy Generation |
| title_sort | computational analysis on numerical simulation of internal flow physics for pump as turbine in renewable small hydro energy generation |
| url | http://dx.doi.org/10.1155/2020/8869766 |
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