...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Building and Environment >Effects of urban geometry on thermal environment in 2D street canyons: A scaled experimental study
【24h】

Effects of urban geometry on thermal environment in 2D street canyons: A scaled experimental study

机译：城市几何对2D街道峡谷热环境的影响：缩放实验研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Changes in urban geometry significantly alters the urban microclimate. Suitable urban geometrical layouts can effectively improve the urban thermal environment to achieve a more sustainable and healthier city. A quantitative assessment of the relationship between the urban geometry and thermal environment is essential to provide scientific guidance for better urban and building design. Hence, we performed a scaled outdoor measurement to investigate the diurnal variations in air, and west and east wall temperatures within two-dimensional (2D) street canyons. We adopted the daily average temperature (T) over bar, daily temperature range DTR, and hottest time t(max) to describe the diurnal temperature characteristics. The influence of aspect ratios was considered (building height/street width, H/W = 0.5, H = 0.5 m, and H/W = 1, 2, 3, 6, H = 1.2 m). Canyon air experienced a smaller (T) over bar and DTR compared with the east and west walls. With an increase in the aspect ratio, no significant difference was observed in the (T) over bar of canyon air. The east and west walls of H/W = 2, 3, and 6 experienced lower (T) over bar (26.1-26.9 degrees C) and smaller DTR (11.7-18.4 degrees C) than those of H/W = 0.5, 1 ((T) over bar =26.7-28.7 degrees C and DTR = 16.0-26.1 degrees C). A higher phase lag of t(max) occurred between H/W = 0.5, and H/W = 6. As the aspect ratio increased, the differences in (T) over bar, DTR, and t(max) between the east and west walls decreased. This study improves our understanding of how urban morphology influences urban thermal environment and provides meaningful references for urban planning. Such high-quality experimental data can be used to validate and further improve numerical simulations and theoretical models.
机译：城市几何的变化显着改变了城市微气候。合适的城市几何布局可以有效地改善城市热环境，以实现更加可持续和更健康的城市。对城市几何和热环境之间关系的定量评估对于为更好的城市和建筑设计提供科学指导至关重要。因此，我们进行了缩放的户外测量，以研究空气中的昼夜变化，西部和东壁温度在二维（2D）街道峡谷内。我们采用每日平均温度（T），每日温度范围DTR和最热时间T（最大）来描述昼夜温度特性。考虑纵横比的影响（建筑物高度/街道宽度，H / W = 0.5，H = 0.5M，H / W = 1,2,3,6，H = 1.2M）。与东西墙相比，峡谷空气经历了较小的（t）酒吧和DTR。随着纵横比的增加，在峡谷空气中的（t）中没有观察到显着差异。 H / W = 2,3和6的东部和西墙经历了低（T）的酒吧（26.1-26.9℃）和较小的DTR（11.7-18.4摄氏度）比H / W = 0.5，1 （（t）折叠= 26.7-28.7℃和DTR = 16.0-26.1摄氏度）。在H / W = 0.5和H / W = 6之间发生的T（MAX）的较高阶段滞后。随着纵横比增加，在东部和西墙减少了。本研究提高了我们对都市形态学如何影响城市热环境的理解，并为城市规划提供有意义的参考。这种高质量的实验数据可用于验证和进一步改善数值模拟和理论模型。

著录项

  • 来源
    《Building and Environment》 |2021年第7期|107916.1-107916.19|共19页
  • 作者

    Chen Guanwen; Lam Cho Kwong Charlie; Wang Kai; Wang Boguang; Hang Jian; Wang Qun; Wang Xuemei;

  • 作者单位

    Sun Yat Sen Univ Sch Atmospher Sci Zhuhai 519082 Peoples R China|Minist Educ Key Lab Trop Atmosphere Ocean Syst Zhuhai 519082 Peoples R China|Southern Marine Sci & Engn Guangdong Lab Zhuhai 519082 Peoples R China;

    Sun Yat Sen Univ Sch Atmospher Sci Zhuhai 519082 Peoples R China|Minist Educ Key Lab Trop Atmosphere Ocean Syst Zhuhai 519082 Peoples R China|Southern Marine Sci & Engn Guangdong Lab Zhuhai 519082 Peoples R China;

    Univ Hong Kong Dept Mech Engn Pok Fu Lam Rd Hong Kong Peoples R China;

    Jinan Univ Inst Environm & Climate Res Guangzhou Peoples R China;

    Sun Yat Sen Univ Sch Atmospher Sci Zhuhai 519082 Peoples R China|Minist Educ Key Lab Trop Atmosphere Ocean Syst Zhuhai 519082 Peoples R China|Southern Marine Sci & Engn Guangdong Lab Zhuhai 519082 Peoples R China;

    Univ Hong Kong Dept Mech Engn Pok Fu Lam Rd Hong Kong Peoples R China;

    Jinan Univ Inst Environm & Climate Res Guangzhou Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Street canyon; Aspect ratio; Street-wall orientation; Diurnal temperature cycle; Fast Fourier transform (FFT);

    机译：街道峡谷;纵横比;街道壁向;昼夜温度周期;快速傅里叶变换（FFT）;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号