Comparison of wind environment quality in high reachability space before and after optimization.

Comparison of wind environment quality in high reachability space before and after optimization.</p

The grid setting of X, Y, and Z axis of the Jianlan Road Pedestrian Commercial District.

The grid setting of X, Y, and Z axis of the Jianlan Road Pedestrian Commercial District.</p

Experimental results based on eight data sets.

Experimental results based on eight data sets.</p

The computational region.

The wind environment quality at the height of pedestrians can significantly affect the thermal comfort and physical and mental health of pedestrians, promote the diffusion of air pollutants and inhibit the formation of urban heat island effect, and has been paid more and more attention in the field of urban and rural planning. This paper takes Jianlan Road commercial pedestrian Street as an example to maximize the thermal comfort of pedestrians. Based on CFD numerical simulation technology and space syntax theory, the pedestrian wind environment of the accessible space of the block is selected for quantitative research. Through numerical simulation, the influence of block spatial form on the wind environment at pedestrian height under the initial condition of uniform air flow is analyzed, and some suggestions are put forward for the optimization of block spatial form. Finally, the block optimization scheme is verified and simulated. The visualization results show that the wind environment quality of the optimized high-accessibility space is significantly improved, the proportion of comfort zone is increased from 58.2% to 86%, and the static wind rate is reduced from 41.8% to 14%. The wind environment optimization effect is obvious.</div

Research scope of pedestrian commercial block on Jianlan Road (Author’s self-painting).

Research scope of pedestrian commercial block on Jianlan Road (Author’s self-painting).</p

The wind velocity vector illustration at Z = 1.5 m in high accessible space in summer after optimization.

The wind velocity vector illustration at Z = 1.5 m in high accessible space in summer after optimization.</p

The block integration map.

The wind environment quality at the height of pedestrians can significantly affect the thermal comfort and physical and mental health of pedestrians, promote the diffusion of air pollutants and inhibit the formation of urban heat island effect, and has been paid more and more attention in the field of urban and rural planning. This paper takes Jianlan Road commercial pedestrian Street as an example to maximize the thermal comfort of pedestrians. Based on CFD numerical simulation technology and space syntax theory, the pedestrian wind environment of the accessible space of the block is selected for quantitative research. Through numerical simulation, the influence of block spatial form on the wind environment at pedestrian height under the initial condition of uniform air flow is analyzed, and some suggestions are put forward for the optimization of block spatial form. Finally, the block optimization scheme is verified and simulated. The visualization results show that the wind environment quality of the optimized high-accessibility space is significantly improved, the proportion of comfort zone is increased from 58.2% to 86%, and the static wind rate is reduced from 41.8% to 14%. The wind environment optimization effect is obvious.</div

The wind velocity contour map at Z = 1.5 m in summer.

The wind velocity contour map at Z = 1.5 m in summer.</p

The wind speed contour map at Z = 1.5 m in high accessible space in summer after optimization.

The wind speed contour map at Z = 1.5 m in high accessible space in summer after optimization.</p

The relationship between parameter δ and classification accuracy.

The relationship between parameter δ and classification accuracy.</p