Wind Field Characteristics of Complex Terrain Based on Experimental and Numerical Investigation
With the intensification of energy consumption, how to make rational and efficient use of wind energy has been studied all over the world. The construction of facilities to obtain wind energy requires an accurate assessment of the wind characteristics of the local terrain. In order to study the wind...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/10/5124 |
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| author | Yunfeng Zou Peng Yue Qingkuan Liu Xuhui He Zhen Wang |
| author_facet | Yunfeng Zou Peng Yue Qingkuan Liu Xuhui He Zhen Wang |
| author_sort | Yunfeng Zou |
| collection | DOAJ |
| description | With the intensification of energy consumption, how to make rational and efficient use of wind energy has been studied all over the world. The construction of facilities to obtain wind energy requires an accurate assessment of the wind characteristics of the local terrain. In order to study the wind characteristics on an island in Southeast China, a 1:1300 terrain model is established, and the characteristics of mean wind and fluctuating wind are studied by numerical simulation and wind tunnel test. The results show that wind speed is affected by the incoming wind direction and local terrain. Wind speed on windward slopes and flat areas with no obstructions is higher, and wind speed on leeward slopes and valleys is lower. Then, the wind attack angle of each measuring point is mainly in the range of −10°~10°, which is much higher than that in flat areas. The positive and negative wind attack angles are controlled by the incoming wind direction, and the size is closely related to the local terrain. As for pulsation characteristics, the disturbance of the inflow determines the turbulence intensity. The incoming wind direction mainly affects the turbulence intensity on the hillside, while the turbulence intensity in the valley and flat area is controlled by the local terrain. In addition, the fluctuating wind speed power spectra on the island is more consistent with the von Karman spectrum, which is quite different from the Kaimal spectrum. The bandwidth on hillsides and valleys will not change with the change in inflow, but for flat areas, the bandwidth is greatly affected by the inflow direction. |
| first_indexed | 2024-03-10T03:23:44Z |
| format | Article |
| id | doaj.art-c6028ad087d644719f56f2af41138f63 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T03:23:44Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-c6028ad087d644719f56f2af41138f632023-11-23T09:58:02ZengMDPI AGApplied Sciences2076-34172022-05-011210512410.3390/app12105124Wind Field Characteristics of Complex Terrain Based on Experimental and Numerical InvestigationYunfeng Zou0Peng Yue1Qingkuan Liu2Xuhui He3Zhen Wang4School of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaState Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang 050043, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaWith the intensification of energy consumption, how to make rational and efficient use of wind energy has been studied all over the world. The construction of facilities to obtain wind energy requires an accurate assessment of the wind characteristics of the local terrain. In order to study the wind characteristics on an island in Southeast China, a 1:1300 terrain model is established, and the characteristics of mean wind and fluctuating wind are studied by numerical simulation and wind tunnel test. The results show that wind speed is affected by the incoming wind direction and local terrain. Wind speed on windward slopes and flat areas with no obstructions is higher, and wind speed on leeward slopes and valleys is lower. Then, the wind attack angle of each measuring point is mainly in the range of −10°~10°, which is much higher than that in flat areas. The positive and negative wind attack angles are controlled by the incoming wind direction, and the size is closely related to the local terrain. As for pulsation characteristics, the disturbance of the inflow determines the turbulence intensity. The incoming wind direction mainly affects the turbulence intensity on the hillside, while the turbulence intensity in the valley and flat area is controlled by the local terrain. In addition, the fluctuating wind speed power spectra on the island is more consistent with the von Karman spectrum, which is quite different from the Kaimal spectrum. The bandwidth on hillsides and valleys will not change with the change in inflow, but for flat areas, the bandwidth is greatly affected by the inflow direction.https://www.mdpi.com/2076-3417/12/10/5124wind energyislandnumerical simulationwind tunnel testwind characteristics |
| spellingShingle | Yunfeng Zou Peng Yue Qingkuan Liu Xuhui He Zhen Wang Wind Field Characteristics of Complex Terrain Based on Experimental and Numerical Investigation Applied Sciences wind energy island numerical simulation wind tunnel test wind characteristics |
| title | Wind Field Characteristics of Complex Terrain Based on Experimental and Numerical Investigation |
| title_full | Wind Field Characteristics of Complex Terrain Based on Experimental and Numerical Investigation |
| title_fullStr | Wind Field Characteristics of Complex Terrain Based on Experimental and Numerical Investigation |
| title_full_unstemmed | Wind Field Characteristics of Complex Terrain Based on Experimental and Numerical Investigation |
| title_short | Wind Field Characteristics of Complex Terrain Based on Experimental and Numerical Investigation |
| title_sort | wind field characteristics of complex terrain based on experimental and numerical investigation |
| topic | wind energy island numerical simulation wind tunnel test wind characteristics |
| url | https://www.mdpi.com/2076-3417/12/10/5124 |
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