An integrated multiscale urban microclimate model for the urban thermal environment

Wong, Nyuk Hien; He, Yueer; Nguyen, Ngoc Son; Raghavan, Srivatsan V.; Martin, Miguel; Hii, Daniel Jun Chung; Yu, Zhuoping; Deng, Jiyu

doi:10.1016/j.uclim.2020.100730

Cited by 48 publications

(17 citation statements)

References 46 publications

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“…Multi-scale has the advantage to bridge between the meso-and the microscale and are able to produce spatially consistent results. Examples for multi-scale and integrated approaches besides the included UMEP [71], are the Integrated Multi-scale Environmental Urban Model (IMEUM) [135] or studies that coupled microand meso-scale climate models, e.g., [136] or [137] or even micro-and meso-scale models with a building energy model [138].…”

Section: Discussionmentioning

confidence: 99%

“…The approach of performance-based urban planning addresses the impact of new land uses across the entire urban system and has a much larger scope than just climate issues [138]. Several model approaches aim to quantify new plans based on different cumulative effects on mobility, green infrastructure, energy, e.g., [139] to optimize the overall performance in the urban system.…”

Section: Discussionmentioning

confidence: 99%

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Review of User-Friendly Models to Improve the Urban Micro-Climate

Jänicke¹,

Milošević

Manavvi

2021

Atmosphere

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Various micro-scale models for comparing alternative design concepts have been developed in recent decades. The objective of this study is to provide an overview of current user-friendly micro-climate models. In the results, a vast majority of models identified were excluded from the review because the models were not micro-scale, lacking a user-interface, or were not available. In total, eight models met the seven-point inclusion criteria. These models were ADMS Temperature and Humidity model, advanced SkyHelios model, ANSYS FLUENT, ENVI-met, RayMan, SOLWEIG, TownScope, and UMEP. These models differ in their complexity and their widespread use in the scientific community, ranging from very few to thousands of citations. Most of these models simulate air temperature, global radiation, and mean radiant temperature, which helps to evaluate outdoor thermal comfort in cities. All of these models offer a linkage to CAD or GIS software and user support systems at various levels, which facilitates a smooth integration to planning and design. We detected that all models have been evaluated against observations. A wider model comparison, however, has only been performed for fewer models. With this review, we aim to support the finding of a reliable tool, which is fit for the specific purpose.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Review of User-Friendly Models to Improve the Urban Micro-Climate

Jänicke¹,

Milošević

Manavvi

2021

Atmosphere

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“…The problem of the urban microclimate optimization can be solved at many levels, since various factors affect it at different levels (the meso level, the district level, the microdistrict level, the building level). The multiscale urban climate modeling system proposed in [5] combines mesoscale, local, micro-scale and large-scale modeling of buildings. The model allows the building energy model to take into account the local climate.…”

Section: Methodsmentioning

confidence: 99%

Factors affecting microclimatic conditions in urban environment

Giyasova

2021

E3S Web Conf.

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Urbanization leads to dramatic changes in urban microclimate, and becomes a serious problem in terms of ensuring comfortable and healthy living of city dwellers. The main factors affecting the microclimate of urban environment are not only the geographical features of cities, but also the density of buildings, the environmental concerns, the thermal response of buildings, the influence of plants and water bodies. The problem of the urban microclimate optimization is multifaceted since various factors affect changes in the urban environment. Thus an integrated multilevel systematic approach to studying the problems of the formation of the urban microclimate is required. Integrating the accumulated knowledge and practices in the research domain with design work is important.

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“…Conventional meteorological observations usually use radiosonde and meteorological towers, among other instruments, and the measured data are not precise enough in time and space, so it is difficult to provide accurate boundary condition data for the CFD model [16]. WRF has become the most common means of providing boundary conditions [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Simulating Flow and Hazardous Gas Dispersion by Using WRF–CFD Coupled Model under Different Atmospheric Stability Conditions

Zhou¹,

Song²,

Xiao³

2022

Atmosphere

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In this paper, the Weather Research and Forecasting (WRF) model is coupled with the computational fluid dynamics (CFD) model to study the diffusion model of the accidental leakage of hazardous gas under different atmospheric stability conditions. First, the field test at Nanjing University was used to validate the different turbulence models of CFD. The experimental data confirm that the realizable k-ε model can describe the behavior of hazardous gas diffusion. On this basis, the diffusion process of the accidental release of tracer gas under different atmospheric stability conditions is simulated. The results show that atmospheric stability has a significant effect on the flow field distribution and the area of plume of hazardous substances. The ambient wind deflects under unstable conditions and vertical turbulence is slightly larger than that under neutral and stable conditions. Under stable conditions, the dilution of harmful gases is suppressed due to weak turbulent mixing. In addition, stable atmospheric conditions can increase near-surface gas concentrations.

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An integrated multiscale urban microclimate model for the urban thermal environment

Cited by 48 publications

References 46 publications

Review of User-Friendly Models to Improve the Urban Micro-Climate

Review of User-Friendly Models to Improve the Urban Micro-Climate

Factors affecting microclimatic conditions in urban environment

Simulating Flow and Hazardous Gas Dispersion by Using WRF–CFD Coupled Model under Different Atmospheric Stability Conditions

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