Derivation of generic typologies for microscale urban airflow studies

Merlier, Lucie; Kuznik, Frédéric; Rusaouën, Gilles; Salat, Serge

doi:10.1016/j.scs.2017.09.017

Cited by 27 publications

(8 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, as stressed by Wang et al (2014), the visualization and spatial distribution of renewable energy sources is now extremely needed in order to make the integration of wind a common practice. Following this direction, the widespread usability of CFD software offers new collaboration opportunities between designers and specialists (Merlier et al 2018). Therefore, the CFD analysis is emerging as an approach allowing designers to promote urban ventilation as a component to orient strategic design solutions (He et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Developing a process-oriented approach towards Positive Energy Blocks: the wind-analysis contribution

Sibilla

2021

City Territ Archit

View full text Add to dashboard Cite

Positive Energy Block (PEB) is an emerging paradigm to transform cities into low carbon cities. It is expected that buildings will become the main components of the future energy infrastructure. This scenario demands a structural integration of the cyclical environmental variables in designing our buildings and cities as a whole. However, such an integration continue to be rare due to the dominance of object-oriented approaches. This study contributes to reducing these difficulties by developing a process-oriented approach, focusing on the wind contribution. The assumption posed herein is that the transition towards PEBs should be an opportunity to redefine the rules to organise the built environment structure integrating energy and urban environmental qualities. A case study, involving three public school buildings located in three different urban patterns in Rome, illustrates a preliminary step in developing an integrated platform to orient strategic design solutions towards PEBs. This is done by developing and assessing three indexes: wind form index, wind thermal-loss index, and wind energy production index. The results point out the usability and limits concerning the approach adopted, stressing the relevance of an integrated platform to support decision-makers in planning the agenda to transform buildings as components of PEBs.

show abstract

Section: Introductionmentioning

confidence: 99%

Developing a process-oriented approach towards Positive Energy Blocks: the wind-analysis contribution

Sibilla

2021

City Territ Archit

View full text Add to dashboard Cite

show abstract

“…The contamination depends on generation rate of contaminant i.e. mercury in present case and the air flow velocity [ 18 ]. Required air changes to reduce mercury contamination below permissible limits can be experimentally evaluated.…”

Section: Introductionmentioning

confidence: 99%

Numerical approach to minimize mercury contamination by geometric and parametric optimization

Shukla

Manivannan

Mandal

2020

Heliyon

View full text Add to dashboard Cite

Due to high vapour pressure at ambient conditions, exposed mercury contributes significant vapour concentration in working atmosphere. Ventilation is a conventional, cheap and very effective method to bring down the concentration of hazardous materials like mercury vapour below permissible limit. In this work a numerical model was developed to obtain intuitive understandings of the spatial distribution of mercury vapors from an exposed surface. The model was validated with experimental data generated using a precinct ventilation system with 8.14% absolute average error. a Validated model was used to study the effect of air flow rate (100–1200 LPM) and impact of architectural design of the containment for fixed exposed mercury surfaceon the final (diluted) mercury concentration. Comparative analysis shows that modification in structural design offers a reduced volume averaged exit mercury concentration and also the reduced peak mercury concentration(C peak ) in the computational domain. Computational approach outlined in this work can be used to estimate spatial variation of mercury vapor concentration and to locate and quantify regions of high local concentration of mercury in various geometries.

show abstract

“…Before going into details about the flow structure around buildings, the definition of 'urban buildings' will be explained. Urban buildings are bluff bodies that are clustered together in different configurations, whose influence on the airflow characteristics is significantly notable in the RSL, and even more notably, in the UCL [35]. Most urban buildings are sharp-edged bluff bodies where flow separation is initiated from the structure edges, resulting in curved shear layers as well as unsteady velocity field, high turbulence level, and unsteady vortex shedding in the buildings wake region [36,37].…”

Section: Flow Structure Around Buildingsmentioning

confidence: 99%

“…In the urban environment, the wind speed and the turbulence characteristics are influenced by the flow interactions between the various buildings; nonetheless, the airflow characteristics at a specific point within the built-up environment is mainly influenced by the characteristics of the nearby building [38]. The flow structures around buildings may vary depending on the buildings geometry, dimension and orientation to the incoming wind [35].…”

Section: Flow Structure Around Buildingsmentioning

confidence: 99%

“…The selection of the locations was based on a general knowledge of the flow patterns around building blocks of different shapes, heights, and densities with respect to the flow angle, reviewed in References (Refs.) [25,35,39,41,43,[59][60][61][62][63][64]. Additionally, all measurement locations were selected to be above flat surfaces to avoid destroying the buildings geometry.…”

Section: Selection Of Wind Angles and Measurement Locationsmentioning

confidence: 99%

See 1 more Smart Citation

The Effects of Urban Settings on Airﬂow Characteristics for Urban Air Mobility Applications

labbad¹

View full text Add to dashboard Cite

The urban wind environment is characterized by complex flow structures and high levels of turbulence due to the densely built up regions and the presence of tall buildings. This renders the flight operations in urban areas challenging since the turbulent airflow characteristics may impair the control system of the flying vehicles, leading to loss of control, which could be catastrophic considering that the areas are densely populated. This thesis investigates the urban airflow characteristics that are expected to pose significant challenges to the flight of aircraft systems and impair their aerodynamic stability.Complex airflow structures were analyzed through wind tunnel experiments in two different facilities on scaled models that represent a realistic urban setting in Toronto, Canada. Flow measurements were conducted at various locations around and above

show abstract

Derivation of generic typologies for microscale urban airflow studies

Cited by 27 publications

References 50 publications

Developing a process-oriented approach towards Positive Energy Blocks: the wind-analysis contribution

Developing a process-oriented approach towards Positive Energy Blocks: the wind-analysis contribution

Numerical approach to minimize mercury contamination by geometric and parametric optimization

The Effects of Urban Settings on Airﬂow Characteristics for Urban Air Mobility Applications

Contact Info

Product

Resources

About