Development of Multi-Scale Prediction Model for Atmospheric Turbulence and Dispersion for Assessing Risks of Nuclear Power Plant Disaster

• Project/Area Number: 26282107
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Natural disaster / Disaster prevention science
• 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): 中山 浩成 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力基礎工学研究センター, 研究副主幹 (50535903) ; 堀口 光章 京都大学, 防災研究所, 助教 (60190253)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000); Fiscal Year 2016: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2015: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2014: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
• Keywords: 自然災害 / 大気乱流 / 大気拡散 / 原子力災害 / 気象モデル / LES / 災害リスク評価 / 東日本大震災 / 自然現象観測・予測 / 防災

Outline of Final Research Achievements

The aim of this study is to develop a multi-scale prediction model of atmospheric turbulence and dispersion for assessing risks of nuclear power plant disasters by merging field observations and high-resolution numerical modeling. The LES model was updated with the use of turbulence and dispersion data obtained in Kyoto City and Oklahoma City. By conducting turbulence simulations by coupling a mesoscale meteorological model and the updated LES model, we have developed a multi-scale prediction model for assessing risks of nuclear power plants under various meteorological conditions.

Research Products

• [Int'l Joint Research] University of Glasgow(英国)
• [Int'l Joint Research] University of Glasgow(United Kingdom)
• [Journal Article] Large-eddy-simulation study of the effects of building height variability on turbulent flows over an actual urban area (2018)
  • Author(s): Yoshida, T., T. Takemi, M. Horiguchi
  • Journal Title: Boundary-Layer Meteorology Volume: 168 Issue: 1 Pages: 127-153
  • DOI: 10.1007/s10546-018-0344-8
  • NAID: 120006473818
  • Peer Reviewed
• [Journal Article] Statistical analysis of dispersal and deposition patterns of volcanic emissions from Mount Sakurajima, Japan (2018)
  • Author(s): Poulidis, A.-P., T. Takemi, A. Shimizu, M. Iguchi, S. F. Jenkins
  • Journal Title: Atmospheric Environment Volume: 179 Pages: 305-320
  • DOI: 10.1016/j.atmosenv.2018.02.021
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Orographic effects on the transport and deposition of volcanic ash: A case study of Mt. Sakurajima, Japan (2017)
  • Author(s): Poulidis, A.-P., T. Takemi, M. Iguchi, and I. A. Renfrew
  • Journal Title: Journal of Geophysical Research: Atmosphere Volume: 122 Issue: 17 Pages: 9332-9350
  • DOI: 10.1002/2017jd026595
  • NAID: 120006349215
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A 1998-2013 climatology of Kyushu, Japan: Seasonal variation of stability and rainfall (2017)
  • Author(s): Poulidis, A.-P., T. Takemi
  • Journal Title: International Journal of Climatology Volume: 37 Issue: 4 Pages: 1843-1858
  • DOI: 10.1002/joc.4817
  • NAID: 120005998049
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Development of local-scale high-resolution atmospheric dispersion model using large-eddy simulation. Part 5: Detailed simulation of turbulent flows and plume dispersion in an actual urban area under real meteorological conditions (2016)
  • Author(s): Nakayama, H., T. Takemi, H. Nagai
  • Journal Title: Journal of Nuclear Science and Technology Volume: 53 Issue: 6 Pages: 887-908
  • DOI: 10.1080/00223131.2015.1078262
  • NAID: 120005971028
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] An analysis of the feasibility and benefits of GPU/multicore acceleration of the Weather Research and Forecasting model (2016)
  • Author(s): Vanderbauwhede, W., and T. Takemi
  • Journal Title: Concurrency and Computation: Practice and Experience Volume: 28 Issue: 7 Pages: 2052-2072
  • DOI: 10.1002/cpe.3522
  • NAID: 120005971036
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] REPRESENTATION OF THERMALLY INDUCED LOCAL CIRCULATION OVER TOYAMA IN NUMERICAL SIMULATIONS WITH VARIOUS RESOLUTION (2016)
  • Author(s): 橋本佳貴，安永数明，竹見哲也
  • Journal Title: PROCEEDINGS OF NATIONAL SYMPOSIUM ON WIND ENGINEERING Volume: 24 Issue: 0 Pages: 7-12
  • DOI: 10.14887/kazekosymp.24.0_7
  • NAID: 130005464502
  • Peer Reviewed / Open Access
• [Journal Article] Large-eddy simulation of turbulent winds during the Fukushima Daiichi Nuclear Power Plant accident by coupling with a meso-scale meteorological simulation model (2015)
  • Author(s): Nakayama, H., T. Takemi, H. Nagai
  • Journal Title: Advances in Science and Research Volume: 12 Issue: 1 Pages: 127-133
  • DOI: 10.5194/asr-12-127-2015
  • NAID: 120005829414
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] The numerical analysis of the capping inversion effect in a convective boundary layer flow on the contaminant gas dispersion (2015)
  • Author(s): Nakayama, H., T. Takemi, H. Nagai
  • Journal Title: Procedia Earth and Planetary Science Volume: 15 Pages: 560-565
  • DOI: 10.1016/j.proeps.2015.08.101
  • NAID: 120005971027
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Twinned buffering: A simple and highly effective scheme for parallelization of Successive Over-Relaxation on GPUs and other accelerators (2015)
  • Author(s): Vanderbauwhede, W., T. Takemi
  • Journal Title: High Performance Computing and Simulation (HPCS), 2015 International Conference on Volume: HPCS2015 Pages: 436-443
  • DOI: 10.1109/hpcsim.2015.7237073
  • NAID: 120006654066
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 都市近郊における大気境界層の観測―不安定時と中立に近い時の乱流構造の比較― (2015)
  • Author(s): 堀口光章
  • Journal Title: 京都大学防災研究所年報 Volume: 58 Pages: 146-156
  • NAID: 120005741160
  • Open Access
• [Journal Article] Large-eddy simulation of plume dispersion under various thermally stratified boundary layers (2014)
  • Author(s): Nakayama, H., T. Takemi, and H. Nagai
  • Journal Title: Advances in Science and Research Volume: 11 Issue: 1 Pages: 75-81
  • DOI: 10.5194/asr-11-75-2014
  • Peer Reviewed / Open Access
• [Journal Article] Characteristics of Summertime Afternoon Rainfall and Its Environmental Conditions in and around the Nobi Plain (2014)
  • Author(s): Tetsuya Takemi
  • Journal Title: SOLA Volume: 10 Issue: 0 Pages: 158-162
  • DOI: 10.2151/sola.2014-033
  • NAID: 130004694333
  • ISSN: 1349-6476
  • Peer Reviewed / Open Access
• [Journal Article] 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 (2014)
  • Author(s): 竹見哲也
  • Journal Title: 天気 Volume: 61 Pages: 343-349
  • Open Access
• [Journal Article] 都市近郊における大気境界層の観測―不安定時の乱流構造― (2014)
  • Author(s): 堀口光章
  • Journal Title: 京都大学防災研究所年報 Volume: 57 Pages: 239-247
  • NAID: 120005567941
  • Open Access
• [Presentation] Coupling of meteorological and LES models to investigate turbulent flow and dispersion in urban districts (2018)
  • Author(s): Tetsuya Takemi
  • Organizer: Mini-workshop on Urban Flow, Dispersion and Ventilation
  • Int'l Joint Research / Invited
• [Presentation] Influences of complex roughness over an actual urban area on turbulent flows as revealed by large-eddy simulations (2017)
  • Author(s): Toshiya Yoshida, Tetsuya Takemi
  • Organizer: 13th Symposium of the Urban Environment, 97th AMS Annual Meeting
  • Place of Presentation: Seattle, Washington, USA
  • Year and Date: 2017-01-22
  • Int'l Joint Research
• [Presentation] 気象モデルとLESモデルを用いた局所スケールの大気乱流・拡散モデリング (2017)
  • Author(s): 竹見哲也
  • Organizer: 大気環境学会近畿支部気象拡散部会講演会
  • Invited
• [Presentation] Effects of geometrical features of surface roughness on turbulent flows over an actual urban area (2017)
  • Author(s): Toshiya Yoshida, Tetsuya Takemi
  • Organizer: 14th Annual Meeting Asia Oceania Geosciences Society
  • Int'l Joint Research
• [Presentation] Topographic and meteorological controls on the dispersal and deposition of volcanic ash (2017)
  • Author(s): Alexandros Poulidis, Tetsuya Takemi, Masato Iguchi, Ian Renfrew
  • Organizer: IAVCEI 2017 Scientific Assembly
  • Int'l Joint Research
• [Presentation] Observational and numerical studies on turbulent airflows over an urban area (2017)
  • Author(s): Tetsuya Takemi, Mitsuaki Horiguchi, Toshiya Yoshida
  • Organizer: 5th International Symposium on Earth-Science Challenges 2017 (ISEC2017)
  • Int'l Joint Research
• [Presentation] Large-eddy simulation of turbulent organized structures over block arrays with various building heights (2017)
  • Author(s): Toshiya Yoshida, Tetsuya Takemi
  • Organizer: 5th International Symposium on Earth-Science Challenges 2017 (ISEC2017)
  • Int'l Joint Research
• [Presentation] 現実気象条件下における都市詳細大気拡散計算手法に関する研究－入力条件の違いが計算結果に及ぼす影響について－ (2017)
  • Author(s): 中山浩成，竹見哲也
  • Organizer: 日本気象学会2017年度秋季大会
• [Presentation] Large-eddy simulation studies on turbulent flows over rough surfaces: Urban versus vegetated areas (2017)
  • Author(s): Tetsuya Takemi, Toshiya Yoshida
  • Organizer: International Workshop on Asian Dust, Bioaerosols and Environmental Regime Shift
  • Int'l Joint Research
• [Presentation] Large-eddy simulation of a diurnal cycle of atmospheric turbulent boundary layer flows over an urban area by coupling with a meso-scale meteorological simulation model (2016)
  • Author(s): Hiromasa Nakayama, Tetsuya Takemi
  • Organizer: The 4th International Workshop on Nonhydrostatic Numerical Models
  • Place of Presentation: The Prince Hakone Lake Ashinoko, Hakone, Japan
  • Year and Date: 2016-11-30
  • Int'l Joint Research
• [Presentation] 実在都市における粗度パラメータと流れ場との関係性に関するLES解析 (2016)
  • Author(s): 吉田敏哉，竹見哲也
  • Organizer: 日本気象学会2016年度秋季大会
  • 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: 2016-10-28
• [Presentation] リサイクリング技術を用いたLES温度成層乱流生成手法に関する研究 (2016)
  • Author(s): 中山浩成，竹見哲也
  • Organizer: 日本気象学会2016年度秋季大会
  • 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: 2016-10-26
• [Presentation] 大気境界層の発達に伴う大規模乱流構造の出現状況の変化（都市近郊での観測より） (2016)
  • Author(s): 堀口光章
  • Organizer: 日本気象学会2016年度秋季大会
  • 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: 2016-10-26
• [Presentation] Large-eddy simulation of plume dispersion during the Fukushima Daiichi Nuclear Power Plant accident by coupling with a meso-scale meteorological simulation model (2016)
  • Author(s): Hiromasa Nakayama, Tetsuya Takemi, Haruyasu Nagai
  • Organizer: 35th International Technical Meeting on Air Pollution Modelling and Its Application
  • Place of Presentation: Minoa Palace Resort & Spa, Chania, Crete, Greece
  • Year and Date: 2016-10-03
  • Int'l Joint Research
• [Presentation] LES analysis on the relationship between roughness parameters and turbulent flow over actual urban area (2016)
  • Author(s): Toshiya Yoshida, Tetsuya Takemi
  • Organizer: The 2nd International Workshop on Extreme Weather in Changing Climate in the Maritime Continent
  • Place of Presentation: Hanoi University of Science, Hanoi, Vietnam
  • Year and Date: 2016-08-24
  • Int'l Joint Research
• [Presentation] Source parameter sensitivity in volcanic ash transport models: A case study of the Sakurajima Volcano, Japan using the WRF Model (2016)
  • Author(s): Alexandros-Panagiotis Poulidis, Tetsuya Takemi, Masato Iguchi
  • Organizer: The 26th Goldschmidt Conference
  • Place of Presentation: Pacifico Yokohama, Yokohama, Japan
  • Year and Date: 2016-06-26
  • Int'l Joint Research
• [Presentation] 実在都市における境界層乱流の時空間構造の解析 (2016)
  • Author(s): 吉田敏哉，竹見哲也
  • Organizer: 日本気象学会2016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: 2016-05-21
• [Presentation] Bridging the gap between the atmospheric scales: Atmospheric modeling by coupling NWP and CDF models (2015)
  • Author(s): Tetsuya Takemi, Toshiya Yoshida, Wim Vanderbauwhede
  • Organizer: NII Shonan Meeting Seminar 075 “Putting Heterogeneous High-Performance Computing at the Fingertips of Domain Experts”
  • Place of Presentation: Shonan Village Center, Hayama, Kanagawa, Japan
  • Year and Date: 2015-11-17
  • Int'l Joint Research / Invited
• [Presentation] Large-eddy simulation of turbulent flow structure over urban area (2015)
  • Author(s): Toshiya Yoshida, Tetsuya Takemi
  • Organizer: The 13th International Conference on Atmospheric Sciences and Applications to Air Quality (ASAAQ13)
  • Place of Presentation: Kobe International Conference Center, Kobe, Japan
  • Year and Date: 2015-11-11
  • Int'l Joint Research
• [Presentation] 現実気象条件での複雑地表面上の大気乱流・拡散LES解析 (2015)
  • Author(s): 竹見哲也，中山浩成
  • Organizer: 日本気象学会2015年度秋季大会
  • Place of Presentation: 京都市南区京都テルサ
  • Year and Date: 2015-10-28
• [Presentation] 京都市街地における大気境界層乱流の組織構造についてのLES解析 (2015)
  • Author(s): 吉田敏哉，竹見哲也
  • Organizer: 日本気象学会2015年度秋季大会
  • Place of Presentation: 京都市南区京都テルサ
  • Year and Date: 2015-10-28
• [Presentation] 都市近郊の大気境界層における中立に近い時と不安定時の乱流構造の観測 (2015)
  • Author(s): 堀口光章
  • Organizer: 日本気象学会2015年度秋季大会
  • Place of Presentation: 京都市南区京都テルサ
  • Year and Date: 2015-10-28
• [Presentation] Numerical simulations of turbulent flow and dispersion over urban and complex terrain by coupling WRF and LES models (2015)
  • Author(s): Tetsuya Takemi, Hiromasa Nakayama
  • Organizer: Meteorology And Climate Modeling for Air Quality (MAC-MAQ)
  • Place of Presentation: Sacramento, California, The United States of America
  • Year and Date: 2015-09-16
  • Int'l Joint Research
• [Presentation] The numerical analysis of the capping inversion effect in a convective boundary layer flow on the contaminant gas dispersion (2015)
  • Author(s): Hiromasa Nakayama, Tetsuya Takemi, Haruyagu Nagai
  • Organizer: World Multidisciplinary Earth Sciences Symposium
  • Place of Presentation: Prague, Czech Republic
  • Year and Date: 2015-09-07
  • Int'l Joint Research
• [Presentation] Numerical experiments on dust devils, atmospheric vortices, and dust transport on Earth (2015)
  • Author(s): Takemi, T.
  • Organizer: Japanese-French Model Studies of Planetary Atmospheres
  • Place of Presentation: Center for Planetary Sciences, Kobe University, Kobe
  • Year and Date: 2015-05-11
  • Int'l Joint Research
• [Presentation] Large-eddy simulation of turbulent winds during the Fukushima Daiichi Nuclear Power Plant accident by coupling with a meso-scale meteorological simulation model (2014)
  • Author(s): Hiromasa Nakayama, Tetsuya Takemi, and Haruyasu Nagai
  • Organizer: The 14th European Meteorological Society Annual Meeting
  • Place of Presentation: Clarion Congress Hotel Prague, Prague, Czech Republic
  • Year and Date: 2014-10-06
• [Presentation] Evaluation of the coupling approach between mesoscale-WRF and LES-based CFD models for simulating turbulent flows and plume dispersion in urban area (2014)
  • Author(s): Hiromasa Nakayama, Tetsuya Takemi, and Haruyasu Nagai
  • Organizer: 6th International Workshop on Global Cloud Resolving Modeling/3rd International Workshop on Nonhydrostatic Numerical Models
  • Place of Presentation: RIKEN/AICS, Kobe, Japan
  • Year and Date: 2014-09-24 – 2014-09-26
• [Presentation] Large-Eddy Simulation of turbulent flows and plume dispersion in the central district of Oklahoma City by coupling with a mesoscale meteorological simulation model (2014)
  • Author(s): Hiromasa Nakayama, Tetsuya Takemi, and Haruyasu Nagai
  • Organizer: The 6th International Symposium on Computational Wind Engineering
  • Place of Presentation: The University of Hamburg, Hamburg, Germany
  • Year and Date: 2014-06-09
• [Presentation] 不安定時の大気境界層における乱流構造－都市近郊における観測より－ (2014)
  • Author(s): 堀口光章
  • Organizer: 日本気象学会2014年度春季大会
  • Place of Presentation: 横浜市横浜情報文化センター
  • Year and Date: 2014-05-23
• [Presentation] 超高分解能数値モデルによる複雑地表面上の局所的な気流変動の解析 (2014)
  • Author(s): 竹見哲也
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: 横浜市西区パシフィコ横浜会議センター
  • Year and Date: 2014-04-28
• [Book] 災害対策全書別冊「国難」となる巨大災害に備える～東日本大震災から得た教訓と知見～」，公益財団法人ひょうご震災記念21世紀研究機構「国難」となる巨大災害に備える編集会議編 (2015)
  • Author(s): 竹見哲也（分担執筆）
  • Total Pages: 645
  • Publisher: ぎょうせい
• [Remarks] 京都大学 防災研究所 気象・水象災害研究部門 暴風雨・気象環境研究分野 竹見哲也
  • URL: http://ssrs.dpri.kyoto-u.ac.jp/takemi/