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Study on Atmospheric Environment Around River

Research Project

Project/Area Number 04650452
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Hydraulic engineering
Research InstitutionGunma University

Principal Investigator

KOBATAKE Shigeki  Gunma University, Faculty of Engineering Associate Professor, 工学部, 助教授 (00027260)

Co-Investigator(Kenkyū-buntansha) SHIMIZU Yoshihiko  Gunma University, Faculty of Engineering Research Associate, 工学部, 助手 (70178995)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1992: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsRiver Front / Temperature Environment / Micro Meteorology
Research Abstract

The cooling effect of river on atmospheric temperature around rever in summer is a well known phenomenon in qualitative respect, but not in a quantitative respect. To evaluate quantitatively, the physical model describing the transport process of momentum and heat is necessary. For construction of the model, wind velocity, temperature and humidity were observed around River Watarase and River Kyuryu. The temperature of river side was 2-3 ゚C lower to compared to urban area. The turblence thermal diffusion coefficient of vertical direction was order of 10^<-1> m^2/sec. In addition to observations described above, some experiments were carried out in wind tunnel having 90x90 cm cross section. A river channel is simulated by a long square pipe (12.5x8 cm cross section), and dry ice was set inside of this pipe as cooling source. Both side of this pipe, heat insulating material covered with artificial lawn as surface roughness were installed as river side area. Wind velocity was measured with 2- dimensional hot-film anemometer. Change of value of Reynolds stress and eddy viscosity, and of their profiles were analyzed in combination with experimental conditions of cooling and wind velocity.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] 小葉竹 重機: "河川周辺の大気環境に関する研究" 水工学論文集. 第37巻. 817-820 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 小葉竹 重機: "風洞を用いた河川周辺の大気環境に関する実験的研究" 水工学論文集. 第38巻. 393-400 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shigeki Kobatake, Yoshihiko Shimizu, Ritsuko Aoki, Fumika Hayasaka: "Observational Research of Atmospheric Environment Around River" Proceedings of Hydralic Engineering, JSCE. 37. 817-820 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shigeki Kobatake, Yoshihiko Shimizu, Ritsuko Aoki, Fumika Hayasaka, You Ando: "Experimental Study on Cooling Effects of River using Wind Tunnel" Proceedings of Hydralic Engineering, JSCE. 38. 393-400 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 小葉竹 重機: "河川周辺の大気環境に関する研究" 水工学論文集. 第37卷. 817-820 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 小葉竹 重機: "風洞を用いた河川周辺の大気環境に関する実験的研究" 水工学論文集. 第38卷. 393-400 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 小葉竹 重機: "河川周辺の大気環境に関する観測研究" 土木学会水工学論文集. 36. 817-820 (1993)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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