Research on urban park design combined with the urban ventilation system

Hou, Cheng‐Lin; Hou, Jiayun; Kang, Qian; Meng, Xi; Wei, Dong; Liu, Zu’an; Zhang, Lili

doi:10.1016/j.egypro.2018.09.139

Cited by 7 publications

(6 citation statements)

References 6 publications

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“…According to the background wind environment, we set the average wind speed to 2.19 m/s. In addition, considering that the actual ground conditions were mostly rough, we used a power law index value of 0.22, and a simulation analysis of the wind speed at a pedestrian height of 1.5 m. The velocityinlet was used to calculate the basin inflow, and the case was defined as outflow when the outbound boundary speed was unknown (Figure 8) (Hou et al 2018). The details of the simulation parameters are shown in Table 3.…”

Section: Discussionmentioning

confidence: 99%

“…In winter, northerly was the dominant wind direction (N, 11.5%), followed by easterly (E, 10.1%), and north-northwest wind (NNW, 8.3%). The difference in the prevailing wind direction between winter and summer in this region is probably a reflection of the overall climatic characteristics (winter wind and summer wind), with the region's prevailing winds varying throughout the year (Razak et al 2013;Hou et al 2018).…”

Section: Wind Directionmentioning

confidence: 99%

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Spatial planning for urban ventilation corridors by urban climatology

Fang

Zhao

et al. 2020

Ecosyst Health Sustain

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Ventilation corridors in cities can decrease air pollution and alleviate heat island problems but there remains a need to fully assess their effectiveness. Few urban managers have been able to take city-scale approaches to the construction of urban ventilation corridors. This study aimed to introduced the Ventilation Corridor Planning (VCP) model, which is a multi-criteria evaluation method combined with a geographical information system (GIS) to determine where the ventilated environment is most appropriate. Specifically, the VCP model took Bozhou, China as the research object and contained two scales, including mesoscale and local scale. In mesoscale scale, we got three outputs to build urban ventilation corridors, including 1) background wind environment, 2) ventilation potential, 3) heat island intensity. In local scale, we used traditional computational fluid dynamics (CFD) model to verify the impact of VCP criteria. The results revealed that compared with the traditional CFD model, the proposed VCP model has advantages in establishing a comprehensive evaluation standard. In addition, the application of VCP model in macro and micro also enhances the efficiency of ventilation corridor construction. Overall, this study introduced a effective modeling method to urban ventilation corridors planning, and provide a way to study the urban climate.

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Section: Discussionmentioning

confidence: 99%

Section: Wind Directionmentioning

confidence: 99%

Spatial planning for urban ventilation corridors by urban climatology

Fang

Zhao

et al. 2020

Ecosyst Health Sustain

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“…The central role of green space and vegetation in mitigating the heat island effect has attracted widespread attention from scholars [ 114 ]. The recent research has focused on the mechanism and influence of green plants in the urban thermal environment [ 115 , 116 , 117 ], the simplification of the vegetation model and its coupling with CFD [ 114 , 118 ], and the relationship between the USTE and various vegetation parameters, such as the relationships between the intensity of urban heat islands and vegetation index values [ 119 , 120 ], vegetation abundance [ 121 ], and the standardized compactness index [ 99 ].…”

Section: Research On Mitigation Measures For Ustes Based On Cfd Simulationsmentioning

confidence: 99%

“…The mechanism by which green vegetation mitigates the heat island effect is mainly reflected by the following two factors [ 117 ]. On the one hand, vegetation absorbs part of the solar radiation for photosynthesis and reflects part of the solar radiation from its leaves [ 92 ].…”

Section: Research On Mitigation Measures For Ustes Based On Cfd Simulationsmentioning

confidence: 99%

“…The ventilation environment can be adjusted to mitigate thermal environment problems. Good ventilation can reduce the heat accumulation in the center of an urban heat island, alleviate the urban heat island effect [ 117 ], and improve the comfort of the thermal environment [ 144 ]. Wind is the medium for heat exchange between a cold source and a heat source, and the main mechanism in alleviating the thermal effect is reflected by the following two factors.…”

Section: Research On Mitigation Measures For Ustes Based On Cfd Simulationsmentioning

confidence: 99%

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Simulation of the Urban Space Thermal Environment Based on Computational Fluid Dynamics: A Comprehensive Review

Huo

Chen

Geng

et al. 2021

Sensors

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Rapid urbanization has made urban space thermal environment (USTE) problems increasingly prominent. USTE research is important for improving urban ecological environment and building energy consumption. Most studies on USTE research progress have focused on meteorological observations and remote sensing methods, and few studies on USTE are based on computational fluid dynamics (CFD). During the past two decades, with the increasing applications of CFD in USTE research, comprehensively summarizing the phased results have become necessary tasks. This paper analyzes the current research status of CFD-based USTE simulation from six perspectives. First, we summarize the current research status of USTE simulation with CFD models that integrate ground observations and remote sensing technology. Second, we define and classify the spatial scope of CFD-based USTE simulations at different scales. Third, we systematically analyze the quantitative relationships among urban land type, the underlying surface structure, water bodies, green space and the corresponding changes in CFD-based USTE simulations. Fourth, we quantitatively analyze the impact of anthropogenic heat in CFD-based USTE simulations. Fifth, we summarize the corresponding USTE mitigation measures and methods based on the CFD simulation results. Finally, the outlooks and the existing problems in current research on CFD simulations of the USTE are analyzed.

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