Air Flow Study Around Isolated Cubical Building in the City of Athens under Various Climate Conditions

• Main Authors: Lekakis, I.C (Author), Palampigik, A.V (Author), Pavlidis, C.L (Author), Sarris, I.E (Author), Vasilopoulos, K. (Author)
• Format: Article
• Language: English
• Published: MDPI 2022
• Subjects: LES; microclimate model; pollutant dispersion; thermal radiation; urban planning
• Online Access: View Fulltext in Publisher

 This study focuses on the airflow and pollutant dispersion around an isolated cubical building located in a warm Mediterranean climate, taking into account the local microclimate conditions (of airflow, albedo of building and soil, and air humidity) using a large-eddy simulation (LES) numerical approach. To test the reliability of computations, comparisons are made against the SILSOE cube experimental data. Three different scenarios are examined: (a) Scenario A with adiabatic walls, (b) Scenario B with the same constant temperature on all the surfaces of the building, and (c) Scenario C using convective and radiative conditions imposed by the local microclimate. For the first two cases the velocity and temperature fields resulting are almost identical. In the third case, the resulting temperature on the surfaces of the building is increased by 19.5%, the center (eye) of the wake zone is raised from the ground and the maximum pollutant concentration is drastically reduced (89%). © 2022 by the authors. Licensee MDPI, Basel, Switzerland.