TY  - JOUR
AU  - Hemida, Hassan
AU  - Šarkić-Glumac, Anina
AU  - Vita, Giulio
AU  - Kostadinović Vranešević, Kristina
AU  - Höffer, Rüdiger
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2112
AB  - 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.
PB  - MDPI
T2  - Applied Sciences
T1  - On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure
VL  - 10
DO  - 10.3390/app10155283
ER  - 

@article{
author = "Hemida, Hassan and Šarkić-Glumac, Anina and Vita, Giulio and Kostadinović Vranešević, Kristina and Höffer, Rüdiger",
year = "2020",
abstract = "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.",
publisher = "MDPI",
journal = "Applied Sciences",
title = "On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure",
volume = "10",
doi = "10.3390/app10155283"
}

Hemida, H., Šarkić-Glumac, A., Vita, G., Kostadinović Vranešević, K.,& Höffer, R.. (2020). On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure. in Applied Sciences
MDPI., 10.
https://doi.org/10.3390/app10155283

Hemida H, Šarkić-Glumac A, Vita G, Kostadinović Vranešević K, Höffer R. On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure. in Applied Sciences. 2020;10.
doi:10.3390/app10155283 .

Hemida, Hassan, Šarkić-Glumac, Anina, Vita, Giulio, Kostadinović Vranešević, Kristina, Höffer, Rüdiger, "On the Flow over High-rise Building for Wind Energy Harvesting: An Experimental Investigation of Wind Speed and Surface Pressure" in Applied Sciences, 10 (2020),
https://doi.org/10.3390/app10155283 . .

TY  - CONF
AU  - Kostadinović Vranešević, Kristina
AU  - Šarkić-Glumac, Anina
AU  - Hemida, Hassan
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2110
AB  - Aim of this paper is to investigate wind pressure distribution on low-rise industrial
building based on the results from atmospheric boundary layer wind tunnel experiments.
Building model is a hanger with a tilted roof with an inclination of 5°. Values of mean and
fluctuating pressure coefficients measured on the surface of the roof and side walls of the
model are discussed in the paper. Five wind approaching angles are considered: 0°, 15°,
30°, 45° and 90°. The investigation can offer some basic understanding of wind behaviour
and effects on low-rise industrial buildings regarding different wind angles.
PB  - Faculty of Civil Engineering Subotica
C3  - Conference proceedings - 7th International Conference: Contemporary Achievements in Civil Engineering 2019
T1  - Experimental investigation of wind load on low-rise industrial building
EP  - 340
SP  - 333
DO  - 10.14415/konferencijaGFS2019.030
ER  - 

@conference{
author = "Kostadinović Vranešević, Kristina and Šarkić-Glumac, Anina and Hemida, Hassan",
year = "2019",
abstract = "Aim of this paper is to investigate wind pressure distribution on low-rise industrial
building based on the results from atmospheric boundary layer wind tunnel experiments.
Building model is a hanger with a tilted roof with an inclination of 5°. Values of mean and
fluctuating pressure coefficients measured on the surface of the roof and side walls of the
model are discussed in the paper. Five wind approaching angles are considered: 0°, 15°,
30°, 45° and 90°. The investigation can offer some basic understanding of wind behaviour
and effects on low-rise industrial buildings regarding different wind angles.",
publisher = "Faculty of Civil Engineering Subotica",
journal = "Conference proceedings - 7th International Conference: Contemporary Achievements in Civil Engineering 2019",
title = "Experimental investigation of wind load on low-rise industrial building",
pages = "340-333",
doi = "10.14415/konferencijaGFS2019.030"
}

Kostadinović Vranešević, K., Šarkić-Glumac, A.,& Hemida, H.. (2019). Experimental investigation of wind load on low-rise industrial building. in Conference proceedings - 7th International Conference: Contemporary Achievements in Civil Engineering 2019
Faculty of Civil Engineering Subotica., 333-340.
https://doi.org/10.14415/konferencijaGFS2019.030

Kostadinović Vranešević K, Šarkić-Glumac A, Hemida H. Experimental investigation of wind load on low-rise industrial building. in Conference proceedings - 7th International Conference: Contemporary Achievements in Civil Engineering 2019. 2019;:333-340.
doi:10.14415/konferencijaGFS2019.030 .

Kostadinović Vranešević, Kristina, Šarkić-Glumac, Anina, Hemida, Hassan, "Experimental investigation of wind load on low-rise industrial building" in Conference proceedings - 7th International Conference: Contemporary Achievements in Civil Engineering 2019 (2019):333-340,
https://doi.org/10.14415/konferencijaGFS2019.030 . .

TY  - CONF
AU  - Kostadinović Vranešević, Kristina
AU  - Šarkić-Glumac, Anina
AU  - Hemida, Hassan
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2109
AB  - An experimental investigation has been conducted in order to give insight into wind flow characteristics in urban areas, in particular, its effects on low-rise buildings. Analyses are based on the results from atmospheric boundary layer wind tunnel experiments. Building model is a 1/75th scale model of a low-rise tilted house with roof inclination of 45°. Aiming to introduce the effects of neighbouring buildings, a comparative study of two configurations is presented, one with isolated principle building and another with four similar buildings surrounding the principle one. Additionally, the influence of the wind approaching angle is considered through the analyses of three directions: 0°, 45° and 90°. Wind velocity profiles above the roof of the principal building and pressure distribution on its surface are analysed in the paper.
PB  - Faculty of Civil Engineering Subotica
C3  - Conference proceedings - 7th International Conference: Contemporary Achievements in Civil Engineering 2019
T1  - Experimental investigation of wind flow around low-rise tilted house
EP  - 332
SP  - 323
DO  - 10.14415/konferencijaGFS2019.029
ER  - 

@conference{
author = "Kostadinović Vranešević, Kristina and Šarkić-Glumac, Anina and Hemida, Hassan",
year = "2019",
abstract = "An experimental investigation has been conducted in order to give insight into wind flow characteristics in urban areas, in particular, its effects on low-rise buildings. Analyses are based on the results from atmospheric boundary layer wind tunnel experiments. Building model is a 1/75th scale model of a low-rise tilted house with roof inclination of 45°. Aiming to introduce the effects of neighbouring buildings, a comparative study of two configurations is presented, one with isolated principle building and another with four similar buildings surrounding the principle one. Additionally, the influence of the wind approaching angle is considered through the analyses of three directions: 0°, 45° and 90°. Wind velocity profiles above the roof of the principal building and pressure distribution on its surface are analysed in the paper.",
publisher = "Faculty of Civil Engineering Subotica",
journal = "Conference proceedings - 7th International Conference: Contemporary Achievements in Civil Engineering 2019",
title = "Experimental investigation of wind flow around low-rise tilted house",
pages = "332-323",
doi = "10.14415/konferencijaGFS2019.029"
}

Kostadinović Vranešević, K., Šarkić-Glumac, A.,& Hemida, H.. (2019). Experimental investigation of wind flow around low-rise tilted house. in Conference proceedings - 7th International Conference: Contemporary Achievements in Civil Engineering 2019
Faculty of Civil Engineering Subotica., 323-332.
https://doi.org/10.14415/konferencijaGFS2019.029

Kostadinović Vranešević K, Šarkić-Glumac A, Hemida H. Experimental investigation of wind flow around low-rise tilted house. in Conference proceedings - 7th International Conference: Contemporary Achievements in Civil Engineering 2019. 2019;:323-332.
doi:10.14415/konferencijaGFS2019.029 .

Kostadinović Vranešević, Kristina, Šarkić-Glumac, Anina, Hemida, Hassan, "Experimental investigation of wind flow around low-rise tilted house" in Conference proceedings - 7th International Conference: Contemporary Achievements in Civil Engineering 2019 (2019):323-332,
https://doi.org/10.14415/konferencijaGFS2019.029 . .

TY  - JOUR
AU  - Šarkić-Glumac, Anina
AU  - Hemida, Hassan
AU  - Höffer, Rüdiger
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2146
AB  - It is believed that the local topology has a significant effect on the wind flow pattern, wind velocity and turbulence intensity of the flow above the roof of buildings and thus is significantly influencing wind harvesting potential. This paper presents an experimental investigation, in which velocity field was measured above the roof of a high-rise building with a square cross section and height to width ratio of 1:3 surrounded by four buildings of the same geometry. In addition, the surface pressure was also measured. The flow above the roof was measured for different wind angles: 0 , 15 , 30 , and 45 . Results showed that there is a significant influence of the upstream building on the wind characteristics above the principal one. In general the wind angle of 45  is shown to be the most desirable angle for wind energy harvesting. The results of this work provide for the first time a database for the validation of computational fluid dynamic simulations for flat roof that will hopefully be used for more detailed investigations for urban wind energy harvesting.
PB  - Elsevier
T2  - Journal of Wind Engineering and Industrial Aerodynamics
T1  - Wind energy potential above a high-rise building influenced by neighboring buildings: An experimental investigation
VL  - 175
DO  - 10.1016/j.jweia.2018.01.022
ER  - 

@article{
author = "Šarkić-Glumac, Anina and Hemida, Hassan and Höffer, Rüdiger",
year = "2018",
abstract = "It is believed that the local topology has a significant effect on the wind flow pattern, wind velocity and turbulence intensity of the flow above the roof of buildings and thus is significantly influencing wind harvesting potential. This paper presents an experimental investigation, in which velocity field was measured above the roof of a high-rise building with a square cross section and height to width ratio of 1:3 surrounded by four buildings of the same geometry. In addition, the surface pressure was also measured. The flow above the roof was measured for different wind angles: 0 , 15 , 30 , and 45 . Results showed that there is a significant influence of the upstream building on the wind characteristics above the principal one. In general the wind angle of 45  is shown to be the most desirable angle for wind energy harvesting. The results of this work provide for the first time a database for the validation of computational fluid dynamic simulations for flat roof that will hopefully be used for more detailed investigations for urban wind energy harvesting.",
publisher = "Elsevier",
journal = "Journal of Wind Engineering and Industrial Aerodynamics",
title = "Wind energy potential above a high-rise building influenced by neighboring buildings: An experimental investigation",
volume = "175",
doi = "10.1016/j.jweia.2018.01.022"
}

Šarkić-Glumac, A., Hemida, H.,& Höffer, R.. (2018). Wind energy potential above a high-rise building influenced by neighboring buildings: An experimental investigation. in Journal of Wind Engineering and Industrial Aerodynamics
Elsevier., 175.
https://doi.org/10.1016/j.jweia.2018.01.022

Šarkić-Glumac A, Hemida H, Höffer R. Wind energy potential above a high-rise building influenced by neighboring buildings: An experimental investigation. in Journal of Wind Engineering and Industrial Aerodynamics. 2018;175.
doi:10.1016/j.jweia.2018.01.022 .

Šarkić-Glumac, Anina, Hemida, Hassan, Höffer, Rüdiger, "Wind energy potential above a high-rise building influenced by neighboring buildings: An experimental investigation" in Journal of Wind Engineering and Industrial Aerodynamics, 175 (2018),
https://doi.org/10.1016/j.jweia.2018.01.022 . .

TY  - CONF
AU  - Šarkić-Glumac, Anina
AU  - Hemida, Hassan
AU  - Kostadinović Vranešević, Kristina
AU  - Höffer, Rüdiger
PY  - 2015
UR  - http://www.winercost.com/cost_files/WINERCOST_Workshop_Coimbra_FINAL_PROCEEDINGS.PDF
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2108
AB  - In order to increase wind energy harvesting from urban environment, the wind be- havior and the effect of the surrounding buildings needs to be fully understood. In this paper, wind tunnel experiments of the flow around a high-rise building with a height to width ratio of 3:1 surrounded by four high-rise buildings of the same geometry were performed to investigate the interference effect on the above roof flow. The buildings were mounted in an environmental boundary layer resembling that of a built environment and velocity measurements over the top of the principal building were performed. Four different wind angles, with respect to the side of the high-rise building, were investigated experimentally; 0°, 15°, 30°, and 45°.
C3  - Workshop: Tends and Challenges for Wind Energy Harvesting
T1  - Experimental investigation of interference effect of high-rise buildings for wind energy extraction
EP  - 66
SP  - 57
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2108
ER  - 

@conference{
author = "Šarkić-Glumac, Anina and Hemida, Hassan and Kostadinović Vranešević, Kristina and Höffer, Rüdiger",
year = "2015",
abstract = "In order to increase wind energy harvesting from urban environment, the wind be- havior and the effect of the surrounding buildings needs to be fully understood. In this paper, wind tunnel experiments of the flow around a high-rise building with a height to width ratio of 3:1 surrounded by four high-rise buildings of the same geometry were performed to investigate the interference effect on the above roof flow. The buildings were mounted in an environmental boundary layer resembling that of a built environment and velocity measurements over the top of the principal building were performed. Four different wind angles, with respect to the side of the high-rise building, were investigated experimentally; 0°, 15°, 30°, and 45°.",
journal = "Workshop: Tends and Challenges for Wind Energy Harvesting",
title = "Experimental investigation of interference effect of high-rise buildings for wind energy extraction",
pages = "66-57",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2108"
}

Šarkić-Glumac, A., Hemida, H., Kostadinović Vranešević, K.,& Höffer, R.. (2015). Experimental investigation of interference effect of high-rise buildings for wind energy extraction. in Workshop: Tends and Challenges for Wind Energy Harvesting, 57-66.
https://hdl.handle.net/21.15107/rcub_grafar_2108

Šarkić-Glumac A, Hemida H, Kostadinović Vranešević K, Höffer R. Experimental investigation of interference effect of high-rise buildings for wind energy extraction. in Workshop: Tends and Challenges for Wind Energy Harvesting. 2015;:57-66.
https://hdl.handle.net/21.15107/rcub_grafar_2108 .

Šarkić-Glumac, Anina, Hemida, Hassan, Kostadinović Vranešević, Kristina, Höffer, Rüdiger, "Experimental investigation of interference effect of high-rise buildings for wind energy extraction" in Workshop: Tends and Challenges for Wind Energy Harvesting (2015):57-66,
https://hdl.handle.net/21.15107/rcub_grafar_2108 .