{"title":"郑州市1:15尺度建筑群秋季遮阳对风热环境影响的实验研究","authors":"Qianru Chen , Zhengrong Li , Yongheng Du","doi":"10.1016/j.uclim.2025.102605","DOIUrl":null,"url":null,"abstract":"<div><div>The wind-thermal environment within a building complex is closely related to meteorological parameters, building complex morphology design and building complex surface temperature. Most existing studies ignored the shading effect between buildings, leading to significant differences in surface temperature and turbulence characteristics between building complexes and isolated buildings. Therefore, in this study, a 4 × 4 scaled building complex (scale 1:15) was constructed in Zhengzhou, China. Statistical analysis was employed to examine the impact of meteorological factors and building morphology on the wind-thermal environment. The results show that after airflow travels 6.7 m along the ventilation corridor, the power spectral density (PSD) drops from 193.622 to 107.910 m<sup>2</sup>·s<sup>−2</sup>·Hz<sup>−1</sup>, and turbulent kinetic energy (TKE) decreases from 0.170 to 0.115 m<sup>2</sup>/s<sup>2</sup>. PSD in the wake area is 76.93 % lower than in the corridor. Turbulence intensity (TI) is substantially higher than values typically observed in open and unobstructed areas. Except for the incoming air temperature, building surface temperature, which is influenced by solar radiation and surface thermal properties, is the main factor affecting air temperature within the building complex. Incoming wind speed has a relatively weak influence. Non-uniformity analysis shows that surface temperature variance is highest on the south side (1.88 °C<sup>2</sup>), followed by the ground (0.86 °C<sup>2</sup>), west (0.57 °C<sup>2</sup>), east (0.46 °C<sup>2</sup>), and north (0.19 °C<sup>2</sup>). A hierarchical strategy treats surfaces with higher temperature variance as non-uniform. This study not only reveals the impact of building morphology on the wind-thermal environment under the shading effect, but also provides valuable experimental data for further studies.</div></div>","PeriodicalId":48626,"journal":{"name":"Urban Climate","volume":"64 ","pages":"Article 102605"},"PeriodicalIF":6.9000,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental study on shading effects on the wind-thermal environment of a 1:15 scaled building complex in autumn in Zhengzhou, China\",\"authors\":\"Qianru Chen , Zhengrong Li , Yongheng Du\",\"doi\":\"10.1016/j.uclim.2025.102605\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The wind-thermal environment within a building complex is closely related to meteorological parameters, building complex morphology design and building complex surface temperature. Most existing studies ignored the shading effect between buildings, leading to significant differences in surface temperature and turbulence characteristics between building complexes and isolated buildings. Therefore, in this study, a 4 × 4 scaled building complex (scale 1:15) was constructed in Zhengzhou, China. Statistical analysis was employed to examine the impact of meteorological factors and building morphology on the wind-thermal environment. The results show that after airflow travels 6.7 m along the ventilation corridor, the power spectral density (PSD) drops from 193.622 to 107.910 m<sup>2</sup>·s<sup>−2</sup>·Hz<sup>−1</sup>, and turbulent kinetic energy (TKE) decreases from 0.170 to 0.115 m<sup>2</sup>/s<sup>2</sup>. PSD in the wake area is 76.93 % lower than in the corridor. Turbulence intensity (TI) is substantially higher than values typically observed in open and unobstructed areas. Except for the incoming air temperature, building surface temperature, which is influenced by solar radiation and surface thermal properties, is the main factor affecting air temperature within the building complex. Incoming wind speed has a relatively weak influence. Non-uniformity analysis shows that surface temperature variance is highest on the south side (1.88 °C<sup>2</sup>), followed by the ground (0.86 °C<sup>2</sup>), west (0.57 °C<sup>2</sup>), east (0.46 °C<sup>2</sup>), and north (0.19 °C<sup>2</sup>). A hierarchical strategy treats surfaces with higher temperature variance as non-uniform. This study not only reveals the impact of building morphology on the wind-thermal environment under the shading effect, but also provides valuable experimental data for further studies.</div></div>\",\"PeriodicalId\":48626,\"journal\":{\"name\":\"Urban Climate\",\"volume\":\"64 \",\"pages\":\"Article 102605\"},\"PeriodicalIF\":6.9000,\"publicationDate\":\"2025-09-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Urban Climate\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2212095525003219\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Urban Climate","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2212095525003219","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Experimental study on shading effects on the wind-thermal environment of a 1:15 scaled building complex in autumn in Zhengzhou, China
The wind-thermal environment within a building complex is closely related to meteorological parameters, building complex morphology design and building complex surface temperature. Most existing studies ignored the shading effect between buildings, leading to significant differences in surface temperature and turbulence characteristics between building complexes and isolated buildings. Therefore, in this study, a 4 × 4 scaled building complex (scale 1:15) was constructed in Zhengzhou, China. Statistical analysis was employed to examine the impact of meteorological factors and building morphology on the wind-thermal environment. The results show that after airflow travels 6.7 m along the ventilation corridor, the power spectral density (PSD) drops from 193.622 to 107.910 m2·s−2·Hz−1, and turbulent kinetic energy (TKE) decreases from 0.170 to 0.115 m2/s2. PSD in the wake area is 76.93 % lower than in the corridor. Turbulence intensity (TI) is substantially higher than values typically observed in open and unobstructed areas. Except for the incoming air temperature, building surface temperature, which is influenced by solar radiation and surface thermal properties, is the main factor affecting air temperature within the building complex. Incoming wind speed has a relatively weak influence. Non-uniformity analysis shows that surface temperature variance is highest on the south side (1.88 °C2), followed by the ground (0.86 °C2), west (0.57 °C2), east (0.46 °C2), and north (0.19 °C2). A hierarchical strategy treats surfaces with higher temperature variance as non-uniform. This study not only reveals the impact of building morphology on the wind-thermal environment under the shading effect, but also provides valuable experimental data for further studies.
期刊介绍:
Urban Climate serves the scientific and decision making communities with the publication of research on theory, science and applications relevant to understanding urban climatic conditions and change in relation to their geography and to demographic, socioeconomic, institutional, technological and environmental dynamics and global change. Targeted towards both disciplinary and interdisciplinary audiences, this journal publishes original research papers, comprehensive review articles, book reviews, and short communications on topics including, but not limited to, the following:
Urban meteorology and climate[...]
Urban environmental pollution[...]
Adaptation to global change[...]
Urban economic and social issues[...]
Research Approaches[...]