no35-41

[40] Potential evaluations of measures to improve the thermal environment of outdoor spaces in the central area of Hiroshima

- Comparing public and private lands

○Naoya Kutsuna¹, Tomoya Migitera², Shota Tamura¹, Takahiro Tanaka¹ (1. Hiroshima University, 2. CTI Engineering Co., Ltd.)

Keywords:urban warming, private land, spatial distribution of pedestrians, CFD, thermal environment design

High temperatures in urban areas have severely affected many people in recent years. Therefore, it is essential to understand the spatial distribution of pedestrians and consider thermal and environmental improvements. Thermal environment improvements have focused on public lands, which now also include private lands; however, the extent of their impact remains unknown. Consequently, this study aimed to evaluate the effects of thermal environment improvement measures on public and private lands in Hiroshima City's central area through numerical calculations. The results show that summer pedestrian ratios are higher on southern sidewalks and narrow streets, which are more easily shaded. Thermal environmental improvement measures, including integrated continuous green spaces across both areas, are more effective than separate areas.