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Development of a prediction method for unsteady ventilation rate within urban buildings

Research Project

Project/Area Number 21K14305
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 23020:Architectural environment and building equipment-related
Research InstitutionFukuoka Institute of Health and Environmental Sciences (2023)
Kyushu University (2021-2022)

Principal Investigator

Hirose Chiyoko  福岡県保健環境研究所, その他部局等, 主任技師 (10897656)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords通風換気量 / 非定常都市気流場 / 非定常流体解析 / PIV計測 / 屋外観測 / 通風換気現象 / 非定常換気量 / 数値流体解析 / 粒子画像流速測定法 / 風洞実験 / 通風換気 / 都市乱流境界層
Outline of Research at the Start

建物運用における省エネルギー化の気運が高まる現代社会において,自然換気・通風の導入促進を念頭に置いた換気量推定手法の高精度化に対する社会要請は極めて高い.本研究では,微視的かつ静的に取り扱われてきた自然換気現象における都市空間の連続性や空気流体の連動性に着目し,縮小都市模型群内を対象とした数値流体解析と屋外実験を実施する.取得データを詳細に分析することで,周辺建物群や大気擾乱によって励起される都市気流場の非定常性とこれに呼応する換気駆動力としての建物壁面風圧の時空間動特性の解明を目指す.

Outline of Final Research Achievements

In our modern society accelerating the trend for energy conservation in building operations, there is a significant social demand for improving the accuracy of ventilation estimation methods to promote the introduction of natural ventilation system, which is gaining attention due to its passive nature. Although natural ventilation phenomena have used to be treated in a microscopic and static manner, this study reexamines it as cross-scale fluid phenomena within the continuity of urban spaces. By conducting numerical simulations and wind tunnel experiments targeting airflow fields around reduced-scale urban building models, and outdoor observations in a real city area, we investigated the relationship between the spatial and temporal distributions of urban airflow excited by surrounding buildings and atmospheric disturbances and the corresponding ventilation phenomena.

Academic Significance and Societal Importance of the Research Achievements

本研究課題は,都市幾何形状に依存した様相を呈するとされる都市気流場が建物換気の時空間動特性の形成に寄与しているのではないかといった学術的「問い」を主題とすることで,換気研究において慣習的に援用されてきた微視的で静的な現象理解からの脱却を志向するものある.研究分野間の橋渡しとなる境界領域での知見整備を志向している点において学術的独自性を有するだけでなく,建物運用における省エネルギー化の観点から換気量推定手法の高精度化に対する社会要請が極めて高いことを鑑みると,社会的インパクトもが期待される.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (15 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (9 results) (of which Peer Reviewed: 9 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Int'l Joint Research] Universiti Teknologi MARA(マレーシア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Universiti Teknologi MARA(マレーシア)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Correlations among high-order statistics and low-occurrence wind speeds within a simplified urban canopy based on particle image velocimetry datasets2024

    • Author(s)
      Li Fei、Hirose Chiyoko、Wang Wei、Liu Chun-Ho、Ikegaya Naoki
    • Journal Title

      Building and Environment

      Volume: 247 Pages: 111050-111050

    • DOI

      10.1016/j.buildenv.2023.111050

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Indoor flow datasets of two-layered cross-ventilation models by particle image velocimetry and hot wire anemometry2024

    • Author(s)
      Wang W.、Ikegaya N.、Hirose C.、Mohamad M.F.
    • Journal Title

      Data in Brief

      Volume: 52 Pages: 109856-109856

    • DOI

      10.1016/j.dib.2023.109856

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comprehensive comparisons of RANS, LES, and experiments over cross-ventilated building under sheltered conditions2024

    • Author(s)
      Wan Ismail Wan Hazwatiamani、Mohamad Mohd Faizal、Ikegaya Naoki、Chung Jaeyong、Hirose Chiyoko、Abd Razak Azli、Mohd Azmi Azlin
    • Journal Title

      Building and Environment

      Volume: 254 Pages: 111402-111402

    • DOI

      10.1016/j.buildenv.2024.111402

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantifying natural cross-ventilation flow of a two-layered model used for terraced houses in tropical zones by particle image velocimetry2023

    • Author(s)
      Ali N.M.、Mohamad M.F.、Wang W.、Hirose C.、Yoshie R.、Ikegaya N.
    • Journal Title

      Building and Environment

      Volume: 244 Pages: 110829-110829

    • DOI

      10.1016/j.buildenv.2023.110829

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] EFFECT OF MOMENTUM PROVISION IN COMPUTATIONAL FLUID DYNAMICS ON TURBULENT STATISTICS IN URBAN BOUNDARY LAYER2022

    • Author(s)
      SANEMITSU Toshiki、IKEGAYA Naoki、HIROSE Chiyoko、TANIMOTO Jun、HAGISHIMA Aya
    • Journal Title

      Journal of Environmental Engineering (Transactions of AIJ)

      Volume: 87 Issue: 792 Pages: 145-156

    • DOI

      10.3130/aije.87.145

    • NAID

      130008150439

    • ISSN
      1348-0685, 1881-817X
    • Year and Date
      2022-02-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] COMPUTATIONAL FLUID DYNAMICS FOR CROSS-VENTILATED AIRFLOW IN AN URBAN BUILDING2022

    • Author(s)
      HIROSE Chiyoko、IKEGAYA Naoki、HAGISHIMA Aya、TANIMOTO Jun
    • Journal Title

      Journal of Environmental Engineering (Transactions of AIJ)

      Volume: 87 Issue: 791 Pages: 19-28

    • DOI

      10.3130/aije.87.19

    • NAID

      130008139171

    • ISSN
      1348-0685, 1881-817X
    • Year and Date
      2022-01-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Distributions of gust and peak factors at a pedestrian level in a simplified urban canopy obtained by particle image velocimetry2022

    • Author(s)
      Hirose C.、Nomichi T.、Ikegaya N.
    • Journal Title

      Building and Environment

      Volume: 222 Pages: 109350-109350

    • DOI

      10.1016/j.buildenv.2022.109350

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Computational fluid dynamics for cross‐ventilated airflow in an urban building2022

    • Author(s)
      Hirose Chiyoko、Ikegaya Naoki、Hagishima Aya、Tanimoto Jun
    • Journal Title

      JAPAN ARCHITECTURAL REVIEW

      Volume: 6 Issue: 1 Pages: 1-9

    • DOI

      10.1002/2475-8876.12312

    • NAID

      130008139171

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Indoor airflow and thermal comfort in a cross-ventilated building within an urban-like block array using large-eddy simulations2021

    • Author(s)
      Hirose C.、Ikegaya N.、Hagishima A.、Tanimoto J.
    • Journal Title

      Building and Environment

      Volume: 196 Pages: 107811-107811

    • DOI

      10.1016/j.buildenv.2021.107811

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 二階建縮小模型における通風気流を対象としたPIV計測2023

    • Author(s)
      廣瀬 智陽子, Ali Nor Merlisa, Mohamad Mohd Faizal, 池谷 直樹
    • Organizer
      日本風工学会2023年度年次研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Pedestrian-level strong wind distribution within a simplified block array determined by particle image velocimetry2023

    • Author(s)
      Hirose, C., Ikegaya, N
    • Organizer
      International Conference on Wind Engineering 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Prediction of pedestrian-level wind velocity obtained by outdoor measurement in an urban area2023

    • Author(s)
      Seta, K., Hirose, C., Ikegaya, N
    • Organizer
      International Conference on Wind Engineering 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 都市キャノピー層における歩行者高さ風速のPIV 計測2022

    • Author(s)
      廣瀬 智陽子
    • Organizer
      第27回風工学シンポジウム
    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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