Study on Underground Temperature Increase due to Urbanization : Part 2-Measurement and Modeling of Underground Temperature Profiles beneath Different Surfaces

DOI Web Site 4 Citations
  • SHIMODA Yoshiyuki
    Postgarduate Corse, Osaka University
  • MIZUNO Minoru
    Department of Environmental Engineering, Faculty of Engineering, Osaka University
  • NAITO Kazuo
    Department of Environmental Engineering, Faculty of Engineering, Osaka University

Bibliographic Information

Other Title
  • 都市化による地中温度の上昇に関する研究 : 第2報-異なる地表面下における地中温度の実測とモデル化
  • 都市化による地中温度の上昇に関する研究-2-異なる地表面下における地中温度の実測とモデル化
  • トシカ ニ ヨル チチュウ オンド ノ ジョウショウ ニ カンスル ケンキュウ

Search this article

Abstract

In order to estimate the thermal environment of underground spaces or heat loss from buried pipes, it is essential to develop an efficient simulation model of underground temperature profiles beneath different surfaces. In this study, first of all, long-term measurements of underground temperature profiles beneath grass covered and asphalt pavement surfaces are performed. Underground temperature profiles beneath the asphalt pavement surface were considerably higher than beneath the grass covered surface; the difference attained a maximum of 9.0℃ at 0.5m depth in summer and the difference between two annual average temperatures was about 4.0℃. Using these data, a least squares analysis was performed to obtain the thermal diffusivities of the soils. After the measurements, numerical simulation of underground temperature was performed. Several parameters in the simulation model were optimized so that simulation results using the weather data at the same time as the measurement agree of with the measured temperature most exactly. After that, use of the standard weather data and simplification of boundary condition at the surface were examined.

Journal

Citations (4)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top