Numerical Investigation on the Urban Heat Island Effect by Using a Porous Media Model

Tingzhen Ming, Shengnan  Lian, Yongjia  Wu,  Tianhao   Shi, Chong  Peng, Yueping Fang, Renaud  Richter, Nyuk  Wong

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
83 Downloads (Pure)

Abstract

The urban heat island (UHI) effect resulted from urbanization as well as industrialization has become a major environmental problem. UHI effect aggravates global warming and endangers human health. Thus, mitigating the UHI effect has become a primary task to address these challenges. This paper verifies the feasibility of a three‐dimensional turbulent porous media model.
Using this model, the authors simulate the urban canopy wind‐heat environment. The temperature and flow field over a city with a concentric circular structure are presented. The impact of three factors (i.e., anthropogenic heat, ambient crosswind speed, and porosity in the central area) on turbulent flow and heat transfer in the central business district of a simplified city model with a
concentric circular structure were analyzed. It is found that the three‐dimensional turbulent porous media model is suitable for estimating the UHI effect. The UHI effect could be mitigated by reducing the artificial heat and improving the porosity of the central city area

Original languageEnglish
Article number4681 
Number of pages23
JournalEnergies
Volume14
Issue number15
DOIs
Publication statusPublished - 1 Aug 2021

Bibliographical note

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Funder

The  National  Key  Research  and  Development  Plan  (Key  Special  Project  of  Inter‐governmental  National  Scientific  and  Technological  Innovation  Cooperation,  Grant  No.  2019YFE0197500), National Natural Science Foundation of China (Grant Nos. 51778511), the European Commission H2020 Marie S Curie Research and Innovation Staff Exchange (RISE) award  (Grant No. 871998)

Keywords

  • porous media
  • heat island effect
  • wind field
  • CFD simulation

ASJC Scopus subject areas

  • Environmental Science(all)
  • Engineering(all)

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