Evaluating a combined WRF and CityFFD method for calculating urban wind distributions

Wang, Jue; Wang, Liangzhu; You, Ruoyu

doi:10.1016/j.buildenv.2023.110205

Cited by 21 publications

(3 citation statements)

References 52 publications

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“…[65], [66] ENVI-met was developed in 1998 by Bruse and Fleer [58]. This software can simulate microscale interactions between the atmosphere, vegetation, and surfaces.…”

Section: Envimetmentioning

confidence: 99%

“…As weaknesses, the lack of wall functions, radiation, vegetation and pollutants models were reported. Wang et al [66] developed a study that first validated the CityFFD software and WRF-CityFFD combined method. It was concluded that with the combined method, it was possible to achieve an accurate wind distribution, especially in coastal areas and with a limited number of meteorological stations.…”

Section: Envimetmentioning

confidence: 99%

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Integration of PV Systems in the Urban Environment—A Review

Rodrigues,

Palmero-Marrero,

Oliveira

2024

Preprint

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Building integrated photovoltaics (BIPV) consists of PV panels that are integrated into the building as part of the construction. This technology has advantages such as the production of electricity without necessary additional land area. This paper provides a literature review about the recent developments in urban building energy modelling, including tools and methods, and the effect of PV systems on building outdoor and indoor environments. It is also intended to provide a critical analysis on how PV systems affect the urban environment, both from an energy and a comfort point of view. The urban heat island development is introduced and related with the existence of PV systems. It is concluded that data acquisition is still a weakness in urban building energy modelling, especially in what concerns non-geometric data, which leads to a major source of errors. The availability of data is a challenge because frequently they are not accessible, due to privacy, high-cost or other reasons. Also, methodologies to develop precise archetypes for creating urban building energy models are lacking.

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“…[65], [66] ENVI-met was developed in 1998 by Bruse and Fleer [58]. This software can simulate microscale interactions between the atmosphere, vegetation, and surfaces.…”

Section: Envimetmentioning

confidence: 99%

Section: Envimetmentioning

confidence: 99%

Integration of PV Systems in the Urban Environment—A Review

Rodrigues,

Palmero-Marrero,

Oliveira

2024

Preprint

View full text Add to dashboard Cite

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“…A common problem for microscale CFD urban models is the proper specification of the initial and boundary conditions, as the traditional input from single-point observations does not represent the variability of the meteorological elements even in a small part of the city [28]. To deal with this issue, a combination of a mesoscale meteorological model with a fine-scale obstacle-resolving CFD model was found to provide realistic flow fields with resolution of a few metres [28][29][30]. A combined model system for obstacle-resolving dispersion simulations in urban areas might consist of single models with varying complexity.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis of Modelled Air Pollutant Distribution around Buildings under Different Meteorological Conditions

Petrov,

Georgieva,

Hristova

2024

Atmosphere

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The distribution of air pollutants in urban areas is significantly influenced by the presence of various geometric structures, including buildings, bridges, and tunnels. In built-up environments, meteorological conditions may influence the accumulation or dispersion of air pollutants in specific zones. This study examines the impact of wind and atmospheric stability on the dispersion of air pollutants around an apartment building situated in close proximity to a busy boulevard in a residential district of Sofia, Bulgaria. A series of dispersion simulations were conducted using the Graz Lagrangian Model (GRAL v.22.09) for a range of meteorological conditions, defined as combinations of the direction and velocity of the approaching flow, and of stability conditions within the study area of 1 × 1 km, with a horizontal resolution of 2 m. The resulting spatial distribution revealed the presence of hotspots and strong gradients in the concentration field. A simulation with meteorological data was also conducted, which was aligned with a campaign to monitor vehicular traffic. The sensitivity tests indicate that GRAL is capable of reproducing high-resolution pollutant fields, accounting for building effects at relatively low computational costs. This makes the model potentially attractive for city-wide simulations as well as for air pollution exposure estimation.

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