Sustainable Cities and Society

CFD simulation of the drag effect of urban trees: Source term modification method revisited at the tree scale

Local air circulation is influenced by the drag forces exerted by urban vegetation. In this study, tree canopy parameterization in computational fluid dynamics (CFD) with source term modifications is conducted at the tree scale, which builds upon the models previously used in the literature…

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Effectiveness of urban surface characteristics as mitigation strategies for the excessive summer heat in cities

Extreme urban heat, influenced by surface characteristics, negatively affects human thermal comfort. Understanding the thermal behaviour of different urban surface parameters (USPs) at large spatial scales is essential for strategic heat mitigation…

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Assessing the effects of urban street trees on building cooling energy needs: The role of foliage density and planting pattern

This study presents an one-way coupling approach between the ENVI-met microclimate model and the EnergyPlus building energy simulation program, to assess the effect of the urban greenery on the improvement of the buildings’ cooling energy needs, in a dense urban area in Thessaloniki, Greece…

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Urban Heat Island associated with Land Use/Land Cover and climate variations in Melbourne, Australia

Highlights When the urban and built-up area increased by +14.93 % in 2014, UHI intensity (ΔT) increased by ∼1.20 ±0.20 °C. The LCI of urban and built-up area was higher in 2014 compared to 2001. UHI altered the surface energy balance resulted in higher Qh and lower Qle. UHI was driven by convection reduction, surface evaporative cooling, and heat storage

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