<abstract xmlns="http://www.w3.org/1999/xhtml">

Air pollution, both gaseous and in the form of dust, is a problem that affects numerous densely built-up areas of modern cities. Based on this assumption, the authors of the following paper have examined an exemplary part of urban space with various building developments located in Warsaw downtown. Both experimental and numerical studies were conducted for the two prevailing wind directions observed in this area, that is the west wind and the south-west wind.
Experimental research was conducted with the application of two known laboratory techniques, i.e., the oil visualization method and the sand erosion technique. The studies were conducted in an open-circuit wind tunnel. Commercial ANSYS Fluent program was used for numerical simulations. The k-ε realizable turbulence model, often applied for this type of tasks, was used in the calculations. As a result, distributions of the velocity amplification coefficient were obtained in the area under consideration, as well as images that present the averaged airflow direction. On basis thereof, potential zones where contamination accumulation may occur were determined.
The impact that introduction of a hypothetical high-rise building into the area would exert on wind conditions in its vicinity was also tested. High-rise buildings tend to intensify airflow in their immediate vicinity. Thus, they can improve ventilation conditions of nearby streets. However, in this particular case, the research prompted the conclusion that the proposed building causes turbulence and increased velocity gradients in the majority of elevation planes. On the other hand, in the ground-level zone, the building blocks rather than intensifies the airflow.
</abstract>

Air pollution, both gaseous and in the form of dust, is a problem that affects numerous densely built-up areas of modern cities. Based on this assumption, the authors of the following paper have examined an exemplary part of urban space with various building developments located in Warsaw downtown. Both experimental and numerical studies were conducted for the two prevailing wind directions observed in this area, that is the west wind and the south-west wind.
Experimental research was conducted with the application of two known laboratory techniques, i.e., the oil visualization method and the sand erosion technique. The studies were conducted in an open-circuit wind tunnel. Commercial ANSYS Fluent program was used for numerical simulations. The k-ε realizable turbulence model, often applied for this type of tasks, was used in the calculations. As a result, distributions of the velocity amplification coefficient were obtained in the area under consideration, as well as images that present the averaged airflow direction. On basis thereof, potential zones where contamination accumulation may occur were determined.
The impact that introduction of a hypothetical high-rise building into the area would exert on wind conditions in its vicinity was also tested. High-rise buildings tend to intensify airflow in their immediate vicinity. Thus, they can improve ventilation conditions of nearby streets. However, in this particular case, the research prompted the conclusion that the proposed building causes turbulence and increased velocity gradients in the majority of elevation planes. On the other hand, in the ground-level zone, the building blocks rather than intensifies the airflow.

Analysis of Aerodynamic Phenomena in Selected Quarter of Building Development in Warsaw Downtown with Reference to Air Pollution

Department of Contemporary Architecture, Interior Design and Industrial Forms

Faculty of Architecture Warsaw University of Technology

ARCHITECTURAE ET ARTIBUS

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Air pollution, both gaseous and in the form of dust, is a problem that affects numerous densely built-up areas of modern cities. Based on this assumption, the...

Analysis of Aerodynamic Phenomena in Selected Quarter of Building Development in Warsaw Downtown with Reference to Air Pollution

Publié en ligne: 18 janv. 2022

Pages: 1 - 18

DOI: https://doi.org/10.24427/aea-2021-vol13-no3-01

Mots clés
smog, air pollution, aerodynamic, wind tunnel

© 2021 Agnieszka Chudzińska et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Analysis of Aerodynamic Phenomena in Selected Quarter of Building Development in Warsaw Downtown with Reference to Air Pollution

Publié en ligne: 18 janv. 2022

Pages: 1 - 18

DOI: https://doi.org/10.24427/aea-2021-vol13-no3-01

Mots cléssmog, air pollution, aerodynamic, wind tunnel

© 2021 Agnieszka Chudzińska et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
smog, air pollution, aerodynamic, wind tunnel