A novel approach to CFD analysis of the urban environment

33rd UIT (Italian Union of Thermo-fluid dynamics) Heat Transfer Conference

物理学;力学

Nardecchia, F.^1 ; Gugliermetti, F.^1 ; Bisegna, F.^1

SAPIENZA University of Rome, Department of Astronautical, Electrical and Energetic Engineering (DIAEE), Via Eudossiana 18, Rome

00184, Italy^1

关键词: Canopy structure;    Different heights;    Environmental assessment;    Geometrical characteristics;    Human activities;    Qualitative assessments;    Urban climatology;    Urban environments;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/655/1/012013/pdf
DOI  :  10.1088/1742-6596/655/1/012013

学科分类：力学，机械学

来源: IOP

【 摘 要 】

The construction of cities, with their buildings and human activities, not only changes the landscape, but also influences the local climate in a manner that depends on many different factors and parameters: weather conditions, urban thermo-physical and geometrical characteristics, anthropogenic moisture and heat sources. Land-cover and canopy structure play an important role in urban climatology and every environmental assessment and city design face with them. Inside the previous frame, the objective of this study is both to identify both the key design variables that alter the environment surrounding the buildings, and to quantified the extension area of these phenomena. The tool used for this study is a 2D computational fluid dynamics (CFD) numerical simulation considering different heights for buildings, temperature gaps between undisturbed air and building's walls, velocities of undisturbed air. Results obtained allowed to find a novel approach to study urban canopies, giving a qualitative assessment on the contribution and definition of the total energy of the area surrounding the buildings.