On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure
The human migration from rural to urban areas has triggered a chain reaction causing the spiking energy demand of cities worldwide. High-rise buildings filling the urban skyline could potentially provide a means to improve the penetration of renewable wind energy by installing wind turbines at their...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/15/5283 |
| _version_ | 1797560747777064960 |
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| author | Hassan Hemida Anina Šarkić Glumac Giulio Vita Kristina Kostadinović Vranešević Rüdiger Höffer |
| author_facet | Hassan Hemida Anina Šarkić Glumac Giulio Vita Kristina Kostadinović Vranešević Rüdiger Höffer |
| author_sort | Hassan Hemida |
| collection | DOAJ |
| description | The human migration from rural to urban areas has triggered a chain reaction causing the spiking energy demand of cities worldwide. High-rise buildings filling the urban skyline could potentially provide a means to improve the penetration of renewable wind energy by installing wind turbines at their rooftop. However, the above roof flow region has not received much attention and most results deal with low-rise buildings. This study investigates the flow pattern above the roof of a high-rise building by analysing velocity and pressure measurements performed in an atmospheric boundary layer wind tunnel, including four wind directions and two different roof shapes. Comparison of the surface pressure patterns on the flat roof with available low-rise building studies shows that the surface pressure contours are consistent for a given wind direction. At 0° wind direction, a separation bubble is detected, while cone vortices dominate at 30° and 45°. The determining factor for the installation of small wind turbines is the vicinity to the roof. Thus, 45° wind direction shows to be the most desirable angle by bringing the substantial amplification of wind and keeping the turbulence intensity low. Decking the roof creates favourable characteristics by overcoming the sensitivity to the wind direction while preserving the speed-up effect. |
| first_indexed | 2024-03-10T18:04:53Z |
| format | Article |
| id | doaj.art-1974b9c774ea421e8fadaa12919b522c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T18:04:53Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-1974b9c774ea421e8fadaa12919b522c2023-11-20T08:32:59ZengMDPI AGApplied Sciences2076-34172020-07-011015528310.3390/app10155283On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface PressureHassan Hemida0Anina Šarkić Glumac1Giulio Vita2Kristina Kostadinović Vranešević3Rüdiger Höffer4Department of Civil Engineering, School of Engineering, University of Birmingham, Birmingham B15 2TT, UKInterdisciplinary Centre for Security, Reliability and Trust (SnT), University of Luxembourg, L-4365 Esch-sur-Alzette, LuxembourgDepartment of Civil Engineering, School of Engineering, University of Birmingham, Birmingham B15 2TT, UKFaculty of Civil Engineering, University of Belgrade, Bulevar Kralja Aleksandra 73, 11000 Belgrade, SerbiaBuilding Aerodynamics Laboratory, Ruhr-Universität Bochum, Universitäts strasse 150, 44801 Bochum, GermanyThe human migration from rural to urban areas has triggered a chain reaction causing the spiking energy demand of cities worldwide. High-rise buildings filling the urban skyline could potentially provide a means to improve the penetration of renewable wind energy by installing wind turbines at their rooftop. However, the above roof flow region has not received much attention and most results deal with low-rise buildings. This study investigates the flow pattern above the roof of a high-rise building by analysing velocity and pressure measurements performed in an atmospheric boundary layer wind tunnel, including four wind directions and two different roof shapes. Comparison of the surface pressure patterns on the flat roof with available low-rise building studies shows that the surface pressure contours are consistent for a given wind direction. At 0° wind direction, a separation bubble is detected, while cone vortices dominate at 30° and 45°. The determining factor for the installation of small wind turbines is the vicinity to the roof. Thus, 45° wind direction shows to be the most desirable angle by bringing the substantial amplification of wind and keeping the turbulence intensity low. Decking the roof creates favourable characteristics by overcoming the sensitivity to the wind direction while preserving the speed-up effect.https://www.mdpi.com/2076-3417/10/15/5283wind tunnel experimentsvelocity measurementspressure measurementsurban wind energy harvesting |
| spellingShingle | Hassan Hemida Anina Šarkić Glumac Giulio Vita Kristina Kostadinović Vranešević Rüdiger Höffer On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure Applied Sciences wind tunnel experiments velocity measurements pressure measurements urban wind energy harvesting |
| title | On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure |
| title_full | On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure |
| title_fullStr | On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure |
| title_full_unstemmed | On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure |
| title_short | On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure |
| title_sort | on the flow over high rise building for wind energy harvesting an experimental investigation of wind speed and surface pressure |
| topic | wind tunnel experiments velocity measurements pressure measurements urban wind energy harvesting |
| url | https://www.mdpi.com/2076-3417/10/15/5283 |
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