地下城市形态对地下热岛的影响
Zhonghao Chu1, Alessandro F Rotta Loria1
1Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, USA.
概括
由于地下城市热岛 (SUHI),城市正在经历地下气候变化. 热源的大小和密度受到地下水流的影响,是SUHI强度的关键驱动因素.
科学领域:
- 城市气候学 城市气候学
- 地质物理学 地质物理学
- 环境工程 环境工程
背景情况:
- 地下城市热岛 (SUHI) 代表了地下气候变化的重大影响.
- 众所周知,地面上方的城市形态会影响表面的热岛,但其地下的影响还未得到充分研究.
研究的目的:
- 定义地下城市形态分析的定量变量.
- 研究地下城市形态对SUHI强度的影响.
主要方法:
- 使用了三维 (3D),时间依赖的有限元素模拟.
- 评估了各种地下形态特征:热源尺寸/分布,绿色空间密度和地面特性.
主要成果:
- 地下热源的规模和密度是SUHI强度的主要驱动因素.
- 地下水流对SUHI强度产生重大影响.
- 土壤的热物理性质和表面的绿地具有次要的,取决于深度的影响.
结论:
- 地下城市形态,特别是热源和地下水,极大地影响了SUHI的强度.
- 结果为缓解SUI和全球管理城市地下环境提供了洞察力.
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