Development of quantitative prediction approach of wind gusts in urban areas by merging meteorological model and LES model

• Project/Area Number: 21540453
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Kyoto University
• Principal Investigator: TAKEMI Tetsuya 京都大学, 防災研究所, 准教授 (10314361)
• Co-Investigator(Kenkyū-buntansha): NAKAYAMA Hiromasa 日本原子力研究開発機構, 原子力基礎工学研究部門, 研究員 (50535903)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 大気境界層 / 大気乱流 / 突風 / 都市気象 / LES / 都市モデル / 気象予報 / 風災害 / 数値流体力学 / 気象モデル / 強風災害 / 融合解析 / 数値予報 / 防災

Research Abstract

In this study, we have developed a numerical approach of wind variation over urban areas by taking into account the effects of urban turbulence and meteorological fields. This approach uses the outputs of a high-resolution meteorological model as the inputs of a large-eddy simulation(LES) model. The proposed approach was applied to cases of typhoons and extra-tropical cyclones that spawned significant wind gusts over the Tokyo business district. It was demonstrated that the proposed approach of coupling a meteorological model and an LES model is able to quantitatively estimate the intensity of wind gusts over the urban area. This new approach will be used for applications to solve problems related to natural disasters, environments, and emergency responses.

Research Products

• [Journal Article] Large-eddy simulation of urban boundary-layer flows by generating turbulent inflows from mesoscale meteorological simulations (2012)
  • Author(s): Nakayama, H., T. Takemi, and H. Nagai
  • Journal Title: Atmospheric Science Letters Volume: (in press) Issue: 3 Pages: 180-186
  • DOI: 10.1002/asl.377
  • Peer Reviewed
• [Journal Article] Importance of the numerical representation of shallow and deep convection for simulations of dust transport over a desert region (2012)
  • Author(s): Takemi, T.
  • Journal Title: Advances in Meteorology Volume: 413584 Pages: 13-13
  • DOI: 10.1155/2012/413584
  • NAID: 120005244241
  • Peer Reviewed
• [Journal Article] 気象擾乱に伴う突風災害の数値シミュレーション (2012)
  • Author(s): 竹見哲也
  • Journal Title: 計算工学 Volume: Vol.17, Nol. 1 Pages: 16-19
  • NAID: 10030264555
• [Journal Article] Large-eddy simulation of urban boundary-layer flows by generating turbulent inflows from mesoscale meteorological simulations (2012)
  • Author(s): H.Nakayama, T.Takemi, H. Nagai
  • Journal Title: Atmospheric Science Letters Volume: 13(印刷中)
  • Peer Reviewed
• [Journal Article] LES analysis of the aerodynamic surface properties for turbulent flows over building arrays with various geometries (2011)
  • Author(s): Nakayama, H., T. Takemi, and H. Nagai
  • Journal Title: Journal of Applied Meteorology and Climatology Volume: Vol.50 Pages: 1692-1712
  • Peer Reviewed
• [Journal Article] LES analysis of the aerodynamic surface properties for turbulent flows over building arrays with various geometries (2011)
  • Author(s): H.Nakayama, T.Takemi, H.Nagai
  • Journal Title: Journal of Applied Meteorology and Climatology Volume: 50 Issue: 8 Pages: 1692-1712
  • DOI: 10.1175/2011jamc2567.1
  • Peer Reviewed
• [Journal Article] LES analysis of the aerodynamic surface properties for turbulent flows overbuilding arrays with various geometries (2011)
  • Author(s): H.Nakayama, T.Takemi, H.Nagai
  • Journal Title: Journal of Applied Meteorology and Climatology Volume: 50(印刷中)
  • Peer Reviewed
• [Journal Article] 高分解能領域気象モデルによる気象擾乱に伴う風速の極値の解析 (2010)
  • Author(s): 竹見哲也, 辰己賢一, 石川裕彦
  • Journal Title: 風工学シンポジウム論文集 Volume: Vol.21 Pages: 19-24
  • NAID: 130005021399
  • Peer Reviewed
• [Journal Article] Mechanisms for intensification and maintenance of numerically simulated dust devils (2010)
  • Author(s): Ohno, H., and T. Takemi
  • Journal Title: Atmospheric Science Letter Volume: Vol.11 Issue: 1 Pages: 27-32
  • DOI: 10.1002/asl.249
  • Peer Reviewed
• [Journal Article] Representation and localization of gusty winds induced bymisocyclones with a high-resolution meteorological modeling (2010)
  • Author(s): Takemi, T., K. Kusunoki, K. Araki, T. Imai, K. Bessho, S. Hoshino, and S. Hayashi
  • Journal Title: Theoretical and Applied Mechanics Japan Volume: Vol.58 Pages: 121-130
  • Peer Reviewed
• [Journal Article] Mechanisms for intensification and maintenance of numerically simulated dust devils (2010)
  • Author(s): H.Ohno, T.Takemi
  • Journal Title: Atmospheric Science Letter Volume: 11 Pages: 27-32
  • Peer Reviewed
• [Journal Article] Representation and localization of gusty winds induced by misocyclones with a high-resolution meteorological modeling (2010)
  • Author(s): Takemi, T., K.Kusunoki, K.Araki, T.Imai, K.Bessho, S.Hoshino, S.
  • Journal Title: Theoretical and Applied Mechanics Japan 58 Pages: 121-130
  • NAID: 130004463728
  • Peer Reviewed
• [Presentation] 高分解能気象シミュレーションによる複雑地形上の局地規模風速場の解析:2011年3月福島県東部地域を対象とした事例研究 (2012)
  • Author(s): 竹見哲也
  • Organizer: 第61回理論応用力学講演会
  • Place of Presentation: 東京都目黒区東京大学生産技術研究所
  • Year and Date: 2012-03-09
• [Presentation] 複雑地形上における極端現象の100 mメッシュ高解像度気象シミュレーション (2011)
  • Author(s): 竹見哲也
  • Organizer: 第25回数値流体力学シンポジウム
  • Place of Presentation: 大阪府吹田市大阪大学コンベンションセンター
  • Year and Date: 2011-12-20
• [Presentation] 複雑地形上における極端現象の100mメッシュ高解像度気象シミュレーション (2011)
  • Author(s): 竹見哲也
  • Organizer: 第25回数値流体力学シンポジウム
  • Place of Presentation: 大阪大学吹田キャンパス
  • Year and Date: 2011-12-20
• [Presentation] 都市のモデル化と都市大気乱流の数値シミュレーション「理学と工学の融合が切り開く新しい都市環境学」 (2011)
  • Author(s): 竹見哲也
  • Organizer: 日本気象学会2011年度秋季大会シンポジウム
  • Place of Presentation: 名古屋市千種区名古屋大学東山キャンパス
  • Year and Date: 2011-11-17
• [Presentation] 都市のモデル化と都市大気乱流の数値シミュレーション (2011)
  • Author(s): 竹見哲也
  • Organizer: 日本気象学会2011年度秋季大会シンポジウム
  • Place of Presentation: 名古屋大学東山キャンパス(招待講演)
  • Year and Date: 2011-11-17
• [Presentation] High-resolution meteorological modeling of wind extremes associated with weather disturbances (2011)
  • Author(s): Takemi, T.
  • Organizer: The 6th Korea-Japan Joint Workshop on Wind Engineering
  • Place of Presentation: Kyoto University Obaku Plaza, Uji, Kyoto, Japan
  • Year and Date: 2011-10-31
• [Presentation] High-resolution meteorological modeling of wind extremes associated with weather disturbances (2011)
  • Author(s): T.Takemi
  • Organizer: The 6th Korea-Japan Joint Workshop on Wind Engineering
  • Place of Presentation: 京都大学宇治キャンパス
  • Year and Date: 2011-10-31
• [Presentation] Large-eddy simulations of turbulent boundary-layer flow over urban areas with complex roughness elements by coupling mesoscale meteorological and CFD models. (2011)
  • Author(s): Takemi, T., and H. Nakayama
  • Organizer: The Fifth Korea-Japan-China Joint Conference on Meteorology
  • Place of Presentation: Busan, Korea
  • Year and Date: 2011-10-25
• [Presentation] Large-eddy simulations of turbulent boundary-layer flow over urban areas with complex roughness elements by coupling mesoscale meteorological and CFD models (2011)
  • Author(s): T.Takemi, H.Nakayama
  • Organizer: The Fifth Korea-Japan-China Joint Conference on Meteorology
  • Place of Presentation: プサン(韓国)
  • Year and Date: 2011-10-25
• [Presentation] Coupling of WRF and building-resolving urban CFD models for analysis of strong winds over an urban area (2011)
  • Author(s): Nakayama, H., T. Takemi, H. Nagai
  • Organizer: 14th Conf. on Mesoscale Processes, Los Angeles, California
  • Place of Presentation: American Meteorological Society
  • Year and Date: 2011-08-01
• [Presentation] Coupling of WRF and building-resolving urban CFD models for analysis of strong winds over an urban area (2011)
  • Author(s): H.Nakayama, T.Takemi, H.Nagai
  • Organizer: 14th Conference on Mesoscale Processes
  • Place of Presentation: ロサンゼルス(アメリカ合衆国)
  • Year and Date: 2011-08-01
• [Presentation] 気象モデルとLESモデルの融合による都市域での強風変動の乱流解析 (2011)
  • Author(s): 竹見哲也, 中山浩成, 永井晴康
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 千葉市美浜区幕張メッセ国際会議場
  • Year and Date: 2011-05-25
• [Presentation] 乱流流入生成手法を用いたLESモデルと気象モデルによる都市域強風変動の融合解析 (2011)
  • Author(s): 中山浩成, 竹見哲也, 永井晴康
  • Organizer: 日本気象学会2011年度春季大会
  • Place of Presentation: 東京都渋谷区国立オリンピック記念青少年総合センター
  • Year and Date: 2011-05-19
• [Presentation] An approach for quantitative forecasting of turbulent flow over an urban area by coupling numerical weather prediction and large-eddy simulation models (2010)
  • Author(s): Takemi, T., and H. Nakayama
  • Organizer: AGU2010 Fall Meeting
  • Place of Presentation: San Francisco, California
  • Year and Date: 2010-12-16
• [Presentation] An approach for quantitative forecasting of turbulent flow over an urban area by coupling numerical weather prediction and large-eddy simulation models (2010)
  • Author(s): T.Takemi, H.Nakayama
  • Organizer: AGU 2010 Fall Meeting
  • Place of Presentation: アメリカ合衆国サンフランシスコ市Moscone会議場
  • Year and Date: 2010-12-16
• [Presentation] High-resolution numerical analysis of turbulent flow in an urban area by merging numerical weather prediction model and large-eddy simulation model (2010)
  • Author(s): Takemi, T., and H. Nakayama
  • Organizer: First International Workshop on Nonhydrostatic Numerical Models
  • Place of Presentation: Kyoto University, Kyoto, Japan
  • Year and Date: 2010-09-29
• [Presentation] High-resolution numerical analysis of turbulent flow in an urban area by merging numerical weather prediction model and large-eddy simulation model (2010)
  • Author(s): T.Takemi, H.Nakayama
  • Organizer: Firs International Workshop on Nonhydrostatic Numerical Models
  • Place of Presentation: 京都市左京区京都大学理学部
  • Year and Date: 2010-09-29
• [Presentation] 塵旋風の構造と強化・維持過程に関する数値的研究 (2010)
  • Author(s): 大野洋, 竹見哲也
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 千葉市美浜区幕張メッセ国際会議場
  • Year and Date: 2010-05-27
• [Presentation] 気象モデルとLESモデルの結合による都市域強風変動の融合解析:突風の予測に向けて (2010)
  • Author(s): 竹見哲也, 中山浩成
  • Organizer: 日本気象学会2010年度春季大会
  • Place of Presentation: 東京都渋谷区
  • Year and Date: 2010-05-26
• [Presentation] 各種形状を有する建物配列群での空力的粗度特性に関するLESと実在都市への適用 (2010)
  • Author(s): 中山浩成, 竹見哲也, 永井晴康
  • Organizer: 日本気象学会2010年度春季大会
  • Place of Presentation: 東京都渋谷区
  • Year and Date: 2010-05-26
• [Presentation] 気象モデルとLESモデルの結合による都市域強風変動の融合解析:突風の予測に向けて (2010)
  • Author(s): 竹見哲也, 中山浩成
  • Organizer: 日本気象学会2010年度春季大会
  • Place of Presentation: 東京都渋谷区国立オリンピック記念青少年総合センター
  • Year and Date: 2010-05-26
• [Presentation] 各種形状を有する建物配列群での空力的粗度特性に関するLESと実在都市への適用 (2010)
  • Author(s): 中山浩成, 竹見哲也, 永井晴康
  • Organizer: 日本気象学会2010年度春季大会
  • Place of Presentation: 東京都渋谷区国立オリンピック記念青少年総合センター
  • Year and Date: 2010-05-26
• [Presentation] 高分解能気象モデルを用いた強風変動シミュレーションと突風予測の可能性 (2010)
  • Author(s): 竹見哲也
  • Organizer: 第56回風に関するシンポジウム
  • Place of Presentation: 京都府宇治市京都大学宇治きはだホール
  • Year and Date: 2010-03-18
• [Presentation] 高分解能気象モデルを用いた強風変動シミュレーションと突風予測の可能性 (2010)
  • Author(s): 竹見哲也
  • Organizer: 第56回風に関するシンポジウム
  • Place of Presentation: 京都府宇治市
  • Year and Date: 2010-03-18
• [Presentation] Representation of extreme weather events in convection-resolving simulations at 100-m resolution (2010)
  • Author(s): Takemi, T.
  • Organizer: The Third International Workshop on Prevention and Mitigation of Meteorological Disasters in Southeast Asia
  • Place of Presentation: Beppu, Japan
  • Year and Date: 2010-03-02
• [Presentation] Representation of extreme weather events in convection-resolving simulations at 100-m resolution (2010)
  • Author(s): Takemi, T.
  • Organizer: The Third International Workshop on Prevention and Mitigation of Meteorological Disasters in Southeast
  • Place of Presentation: 大分県別府市
  • Year and Date: 2010-03-02
• [Presentation] メソ気象擾乱による強風変動のSGSモデルを用いた高解像度気象解析 (2009)
  • Author(s): 竹見哲也, 荒木啓司, 今井俊昭, 柴田徹, 楠研一, 別所康太郎, 中里真久, 益子渉, 林修吾, 星野俊介, 猪上華子, 保野聡裕
  • Organizer: 日本気象学会2009年度秋季大会
  • Place of Presentation: 福岡県福岡市
  • Year and Date: 2009-11-27
• [Remarks]
  • URL: http://ssrs.dpri.kyoto-u.ac.jp/~takemi