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Development of a module of tree canopy model for prediction, assessment and design of urban environment using CFD and BIM

Research Project

Project/Area Number 24656330
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Architectural environment/equipment
Research InstitutionTohoku University

Principal Investigator

MOCHIDA Akashi  東北大学, 工学(系)研究科(研究院), 教授 (00183658)

Co-Investigator(Renkei-kenkyūsha) TESHIROGI Jun  (公財)都市緑化機構, 研究部, 主任研究員 (70537026)
Research Collaborator KOBAYASHI Hikaru  東北大学, 大学院工学研究科, 准教授 (90709734)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords都市植栽 / 都市環境設計 / 風環境 / CFDサブモデル / モヂュール化 / BIM / Canopyモデル / 乱れの長さスケール / 樹木 / 風速低減 / 乱流促進 / LESデータ / 長期測定 / 密度・形状 / CFD入力モヂュール / 樹木Canopy / 都市風環境 / CFD / モデュール化 / 樹木密度 / LES
Outline of Final Research Achievements

This study aimed to develop a new module of tree canopy model for CFD prediction of urban environment. Firstly, field observations of turbulent flow fields in and around a group of trees were carried out and spatial variation of turbulent length scale was examined. Then, new evaluation methods of the turbulent length scale using LES data were developed to revise model coefficients of canopy model. Next, LES analyses of the wind flow within roughness elements were performed to investigate the influence of roughness configurations on turbulent characteristics within the canopy layer. Canopy models previously proposed based on k-ε model to reproduce the effect of roughness configurations on flow fields were examined and revised by using the turbulent length scale data provided by the LES. Finally, wind environments in an agricultural area located 20km south from Sendai were predicted to investigate the effects of new windbreak forest by using OpenFOAM with the revised tree canopy model.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (13 results)

All 2015 2014 2012

All Journal Article (6 results) (of which Peer Reviewed: 2 results,  Acknowledgement Compliant: 4 results) Presentation (7 results) (of which Invited: 1 results)

  • [Journal Article] Evaluation of turbulent length scale within urban canopy layer based on LES data2015

    • Author(s)
      T.Okaze, A.Ono, A.Mochida, Y.Kannuki, S.Watanabe
    • Journal Title

      Journal of Wind Engineering and Industrial Aerodynamics

      Volume: - Pages: 79-83

    • DOI

      10.1016/j.jweia.2014.11.016

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 樹木Canopy モデル構築のための実測に基づく単木周辺及び樹木群落内の乱流統計量の測定2015

    • Author(s)
      阿藤裕昭、大風翼、持田灯
    • Journal Title

      日本建築学会東北支部研究報告集

      Volume: -

    • NAID

      110009983417

    • Related Report
      2014 Annual Research Report
    • Acknowledgement Compliant
  • [Journal Article] 単木周辺及び樹木群落内の乱流統計量の測定と乱れの長さスケールの推定2015

    • Author(s)
      阿藤裕昭、大風翼、持田灯
    • Journal Title

      日本建築学会大会学術講演梗概集

      Volume: -

    • Related Report
      2014 Annual Research Report
    • Acknowledgement Compliant
  • [Journal Article] LESによる都市ラフネスが都市Canopy層の流れの構造に及ぼす影響の分析(その5) LESに基づくCanopyモデルのための新たな乱れの長さスケールの推定方法の提案2015

    • Author(s)
      渡部朱生、大風翼、持田灯
    • Journal Title

      日本建築学会大会学術講演梗概集

      Volume: -

    • Related Report
      2014 Annual Research Report
    • Acknowledgement Compliant
  • [Journal Article] LESによる都市ラフネスが都市Canopy層の流れの構造に及ぼす影響の分析(その4) LESに基づくCanopyモデルのパラメータ推定方法の妥当性の検証2014

    • Author(s)
      渡部朱生、大風翼、環貫陽、持田灯
    • Journal Title

      日本建築学会大会学術講演梗概集

      Volume: 環境工学II Pages: 669-670

    • Related Report
      2014 Annual Research Report
  • [Journal Article] Evaluation of turbulent length scale within urban canopy layer based on LES data2014

    • Author(s)
      Tsubasa Okaze,Akashi Mochida, Azusa Ono, Yo Kannuki
    • Journal Title

      The proceedings of 6th International Symposium on Computational Wind Engineering

      Volume: 掲載確定

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] 単木周辺及び樹木群落内の乱流統計量の測定と乱れの長さスケールの推定2015

    • Author(s)
      阿藤裕昭、大風翼、持田灯
    • Organizer
      2015年度日本建築学会大会(関東)
    • Place of Presentation
      東海大学(神奈川県・平塚市)
    • Year and Date
      2015-09-04 – 2015-09-06
    • Related Report
      2014 Annual Research Report
  • [Presentation] LESによる都市ラフネスが都市Canopy層の流れの構造に及ぼす影響の分析(その5) LESに基づくCanopyモデルのための新たな乱れの長さスケールの推定方法の提案2015

    • Author(s)
      渡部朱生、大風翼、持田灯
    • Organizer
      2015年度日本建築学会大会(関東)
    • Place of Presentation
      東海大学(神奈川県・平塚市)
    • Year and Date
      2015-09-04 – 2015-09-06
    • Related Report
      2014 Annual Research Report
  • [Presentation] 樹木Canopy モデル構築のための実測に基づく単木周辺及び樹木群落内の乱流統計量の測定2015

    • Author(s)
      阿藤裕昭、大風翼、持田灯
    • Organizer
      2015年度 日本建築学会東北支部研究報告会
    • Place of Presentation
      山形大学(山形県・山形市)
    • Year and Date
      2015-06-20 – 2015-06-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] LESによる都市ラフネスが都市Canopy層の流れの構造に及ぼす影響の分析(その4) LESに基づくCanopyモデルのパラメータ推定方法の妥当性の検証2014

    • Author(s)
      渡部朱生、大風翼、環貫陽、持田灯
    • Organizer
      2014年 日本建築学会大会[近畿]
    • Place of Presentation
      神戸大学(兵庫県・神戸市)
    • Year and Date
      2014-09-12 – 2014-09-14
    • Related Report
      2014 Annual Research Report
  • [Presentation] Evaluation of turbulent length scale within urban canopy layer based on LES data2014

    • Author(s)
      Tsubasa Okaze, Azusa Ono, Akashi Mochida, Yo Kannuki
    • Organizer
      6th International Symposium on Computational Wind Engineering
    • Place of Presentation
      Hamburg, Germany
    • Year and Date
      2014-06-09 – 2014-06-12
    • Related Report
      2014 Annual Research Report 2013 Research-status Report
  • [Presentation] LESによる都市ラフネスが都市Canopy層の流れの構造に及ぼす影響の分析(その4)LESに基づくCanopyモデルのパラメータ推定方法の妥当性の検証2014

    • Author(s)
      渡部 朱生,大風 翼,環貫 陽,持田 灯
    • Organizer
      2014年度日本建築学会大会(近畿)
    • Place of Presentation
      神戸
    • Related Report
      2013 Research-status Report
  • [Presentation] Prediction of urban environment based on engineering CFD models2012

    • Author(s)
      Akashi mochida
    • Organizer
      9th International Advanced School on Wind Engineering
    • Place of Presentation
      University of the Philippines, フィリピン
    • Related Report
      2012 Research-status Report
    • Invited

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Published: 2013-05-31   Modified: 2019-07-29  

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