Numerical Study on Effect of High-rise Building on Wind and Thermal Environments in Idealized Urban Array: Impacts of Planar Density

Document Type : Regular Article


1 Guangzhou Panyu Polytechnic, Guangzhou, Guangdong, 511483, China

2 School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, China



How the high-rise (HR) building affects the pedestrian-level wind environment (PLWE) is of great significance to urban planning. Therefore, the effects of the HR building on the wind and the thermal environments in the urban array with different planar densities are studied numerically. The planar densities are 0.25, 0.4 and 0.6. The simulation results reveal that the HR building can strongly affect the flow dynamics and the heat transfer mechanisms in the urban array. Compared with the low-rise (LR) buildings, the presence of the HR building in the surrounding buildings creates high-speed downwash airflow in the upstream street, and the velocity of downwash airflow increases with the increase of planar density. The turbulent kinetic energy at pedestrian level around the HR building increases. When the planar density is large, the direction of the wake airflow behind the HR building is alternating. And long periods of high-speed airflow are observed, which do not occur in the wake of the target LR building. The temperature around the HR building is lower than that around the target LR building. The surface heat flux around the HR building is greater than that around the target LR building. The surface heat flux around the HR building increases with the increase of the planar density, which is contrary to that around the target LR building.


Main Subjects

Bazdidi-Tehrani, F., Gholamalipour, P., Kiamansouri, M., & Jadidi, M. (2019). Large eddy simulation of thermal stratification effect on convective and turbulent diffusion fluxes concerning gaseous pollutant dispersion around a high-rise model building. Journal of Building Performance Simulation, 12(1), 97-116.
Blocken, B., Stathopoulos, T., & Van Beeck, J. (2016). Pedestrian-level wind conditions around buildings: Review of wind-tunnel and CFD techniques and their accuracy for wind comfort assessment. Building and Environment, 100, 50-81.
Ding, P., & Zhou, X. (2022). A DDES Model with Subgrid-scale Eddy Viscosity for Turbulent Flow. Journal of Applied Fluid Mechanics, 15(3), 831-842.
Ding, P., Zhou, X., Wu, H., & Chen, Q. (2022). An efficient numerical approach for simulating airflows around an isolated building. Building and Environment, 210, 108709.
Du, Y., Mak, C. M., & Li, Y. (2019). A multi-stage optimization of pedestrian level wind environment and thermal comfort with lift-up design in ideal urban canyons. Sustainable Cities and Society, 46, 101424.
Duan, G., & Ngan, K. (2019). Sensitivity of turbulent flow around a 3-D building array to urban boundary-layer stability. Journal of Wind Engineering and Industrial Aerodynamics, 193, 103958.
Duan, G., & Ngan, K. (2020). Influence of thermal stability on the ventilation of a 3-D building array. Building and Environment, 183, 106969.
Gousseau, P., Blocken, B., & Van Heijst, G. J. F. (2013). Quality assessment of large-eddy simulation of wind flow around a high-rise building: Validation and solution verification. Computers & Fluids, 79, 120-133.
Iqbal, Q. M. Z., & Chan, A. L. S. (2016). Pedestrian level wind environment assessment around group of high-rise cross-shaped buildings: Effect of building shape, separation and orientation. Building and Environment, 101, 45-63.
Kuo, C. Y., Tzeng, C. T., Ho, M. C., & Lai, C. M. (2015). Wind tunnel studies of a pedestrian-level wind environment in a street canyon between a high-rise building with a podium and low-level attached houses. Energies, 8(10), 10942-10957.
Lin, Y., Ichinose, T., Yamao, Y., & Mouri, H. (2020). Wind velocity and temperature fields under different surface heating conditions in a street canyon in wind tunnel experiments. Building and Environment, 168, 106500.
Marucci, D., & Carpentieri, M. (2020). Dispersion in an array of buildings in stable and convective atmospheric conditions. Atmospheric Environment, 222, 117100.
Mathey, F., Cokljat, D., Bertoglio, J. P., & Sergent, E. (2006). Assessment of the vortex method for large eddy simulation inlet conditions. Progress in Computational Fluid Dynamics, An International Journal, 6(1-3), 58-67.
Menter, F. R. (1994). Two-equation eddy-viscosity turbulence models for engineering applications. AIAA Journal, 32(8), 1598-1605.
Mittal, H., Sharma, A., & Gairola, A. (2018). A review on the study of urban wind at the pedestrian level around buildings. Journal of Building Engineering, 18, 154-163.
Mittal, H., Sharma, A., & Gairola, A. (2019). Numerical simulation of pedestrian level wind flow around buildings: Effect of corner modification and orientation. Journal of Building Engineering, 22, 314-326.
Nicoud, F., & Ducros, F. (1999). Subgrid-scale stress modelling based on the square of the velocity gradient tensor. Flow, turbulence and Combustion, 62(3), 183-200. 10.1023/A:1009995426001
Ooi, A., Lu, W., Chan, L., Cao, Y., Leontini, J., & Skvortsov, A. (2022). Turbulent flow over a cylinder confined in a channel at Re= 3,900. International Journal of Heat and Fluid Flow, 96, 108982.
Shirzadi, M., & Tominaga, Y. (2021). Multi-fidelity shape optimization methodology for pedestrian-level wind environment. Building and Environment, 204, 108076.
Spalart, P. R. (2009). Detached-eddy simulation. Annual review of Fluid Mechanics, 41(1), 181-202.
Stathopoulos, T. (1985). Wind environmental conditions around tall buildings with chamfered corners. Journal of Wind Engineering and Industrial Aerodynamics, 21(1), 71-87.
Sumner, D. (2010). Two circular cylinders in cross-flow: a review. Journal of Fluids and Structures, 26(6), 849-899.
Tamura, Y., Xu, X., Tanaka, H., Kim, Y. C., Yoshida, A., & Yang, Q. (2017). Aerodynamic and pedestrian-level wind characteristics of super-tall buildings with various configurations. Procedia Engineering, 199, 28-37.
Tamura, Y., Xu, X., & Yang, Q. (2019). Characteristics of pedestrian-level Mean wind speed around square buildings: Effects of height, width, size and approaching flow profile. Journal of Wind Engineering and Industrial Aerodynamics, 192, 74-87.
Tominaga, Y., & Shirzadi, M. (2021). Wind tunnel measurement of three-dimensional turbulent flow structures around a building group: Impact of high-rise buildings on pedestrian wind environment. Building and Environment, 206, 108389.
Tsang, C. W., Kwok, K. C. S., & Hitchcock, P. A. (2012). Wind tunnel study of pedestrian level wind environment around tall buildings: Effects of building dimensions, separation and podium. Building and Environment, 49, 167-181.
Tse, K.-T., Zhang, X., Weerasuriya, A. U., Li, S. W., Kwok, K. C. S., Mak, C. M., & Niu, J. (2017). Adopting ‘lift-up’building design to improve the surrounding pedestrian-level wind environment. Building and Environment, 117, 154-165.
Uematsu, Y., Yamada, M., Higashiyama, H., & Orimo, T. (1992). Effects of the corner shape of high-rise buildings on the pedestrian-level wind environment with consideration for mean and fluctuating wind speeds. Journal of Wind Engineering and Industrial Aerodynamics, 44(1-3), 2289-2300.
Van Druenen, T., Van Hooff, T., Montazeri, H., & Blocken, B. (2019). CFD evaluation of building geometry modifications to reduce pedestrian-level wind speed. Building and Environment, 163, 106293.
Xia, Q., Liu, X., Niu, J., & Kwok, K. C. S. (2017). Effects of building lift-up design on the wind environment for pedestrians. Indoor and built Environment, 26(9), 1214-1231.
Yoshie, R. (2016). Wind tunnel experiment and large eddy simulation of pollutant/thermal dispersion in non-isothermal turbulent boundary layer. Advanced Environmental Wind Engineering, Springer.
Zhang, X., Tse, K. T., Weerasuriya, A. U., Li, S. W., Kwok, K. C. S., Mak, C. M., Lin, Z. (2017). Evaluation of pedestrian wind comfort near ‘lift-up’buildings with different aspect ratios and central core modifications. Building and Environment, 124, 245-257.