Development of experimental database and validation of analysis code for dynamic behavior of fuel debris bed

• Project/Area Number: 25420909
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Kyushu University
• Principal Investigator: MORITA Koji 九州大学, 工学(系)研究科(研究院), 教授 (40311849)
• Co-Investigator(Kenkyū-buntansha): MATSUMOTO Tatsuya 九州大学, 大学院工学研究院, 助教 (90325514)
• Co-Investigator(Renkei-kenkyūsha): TOBITA Yoshiharu 日本原子力研究開発機構, 次世代原子力システム研究開発部, 主任研究員 (20421555)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 高速炉 / 炉心損傷事故 / 燃料デブリベッド / セルフ・レベリング / 数値解析 / 個別要素法 / 実験データベース / 混相流 / 原子炉安全評価 / 崩壊熱除去 / 混相流解析コード

Outline of Final Research Achievements

The present study focuses on self-leveling behavior of fuel debris bed, which is critical as a dominant factor in the long-term decay heat removal phase after core disruptive accident of fast reactors. A series of experiments, which improve simulated accident conditions such as debris properties, coolant boiling behaviors and so on, was performed to acquire experimental knowledge on self-leveling characteristics. An experimental database was also developed for validation of physical models used in computational tools. Validation of a numerical simulation code based on the particle-grid hybrid method was examined based on the present experimental results.

Research Products

• [Int'l Joint Research] カールスルーエ工科大学(ドイツ)
• [Journal Article] A New Empirical Model for Self-Leveling Behavior of Cylindrical Particle Beds (2016)
  • Author(s): K. MORITA, T. MATSUMOTO, S. NISHI, T. NISHIKIDO, S. CHENG, H. TAGAMI, T. SUZUKI, Y. TOBITA
  • Journal Title: Journal of Nuclear Science and Technology Volume: 53 Issue: 5 Pages: 713-725
  • DOI: 10.1080/00223131.2015.1126204
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Experimental study and empirical model development for self-leveling behavior of debris bed using gas-injection (2014)
  • Author(s): S. CHENG, H. TAGAMI, H. YAMANO, T. SUZUKI, Y. TOBITA, Y. NAKAMURA, S. TAKETA, S. NISHI, B. ZHANG, T. MATSUMOTO, K. MORITA
  • Journal Title: Mechanical Engineering Journal Volume: 1 Issue: 4 Pages: TEP0022-TEP0022
  • DOI: 10.1299/mej.2014tep0022
  • NAID: 130004684544
  • ISSN: 2187-9745
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] An Investigation on Debris Bed Self-Leveling Behavior with Non-Spherical Particles (2014)
  • Author(s): S. CHENG, H. TAGAMI, H. YAMANO, T. SUZUKI, Y. TOBITA, S. TAKETA, S. NISHI, S. NISHIKIDO, B. ZHANG, T. MATSUMOTO, K. MORITA
  • Journal Title: Journal of Nuclear Science and Technology Volume: 51 Issue: 9 Pages: 1096-1106
  • DOI: 10.1080/00223131.2014.910478
  • NAID: 120006683940
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Evaluation of Debris Bed Self-Leveling Behavior: A Simple Empirical Approach and its Validations (2014)
  • Author(s): S. CHENG, H. TAGAMI, H. YAMANO, T. SUZUKI, Y. TOBITA, B. ZHANG, T. MATSUMOTO, K. MORITA
  • Journal Title: Annals of Nuclear Energy Volume: 63 Pages: 188-198
  • DOI: 10.1016/j.anucene.2013.07.050
  • Peer Reviewed
• [Presentation] デブリベッドのセルフ・レベリングに関する研究；球形・非球形混合粒子ベッドのレベリング特性 (2016)
  • Author(s): 松岡史也, 錦戸達也, 三浦 亮, 松元達也, 守田幸路
  • Organizer: 日本原子力学会「2016年春の年会」
  • Place of Presentation: 東北大学（仙台市）
  • Year and Date: 2016-03-26
• [Presentation] デブリベッドのセルフ・レベリングに関する研究：混合粒子ベッドのレベリング特性 (2015)
  • Author(s): 三浦 亮, 錦戸達也, 松岡史也, 松元達也, 守田幸路
  • Organizer: 日本原子力学会九州支部第34回研究発表講演会
  • Place of Presentation: 九州大学（福岡市）
  • Year and Date: 2015-12-05
• [Presentation] デブリベッドのセルフ・レベリングに関する研究：混合粒子ベッドのセルフ・レベリング特性 (2015)
  • Author(s): 錦戸達也, 松岡史也, 西 津平, 松元達也, 守田幸路
  • Organizer: 日本原子力学会「2015年春の年会」
  • Place of Presentation: 茨城大学（日立市）
  • Year and Date: 2015-03-20 – 2015-03-22
• [Presentation] Validation of New Empirical Model for Self-Leveling Behavior of Cylindrical Particle Beds Based on Experimental Database (2014)
  • Author(s): K. MORITA, T. MATSUMOTO, S. TAKETA, S. NISHI, S. CHENG, T. SUZUKI, Y. TOBITA
  • Organizer: 10th International Conference on Nuclear Thermal Hydraulics, Operation and Safety (NUTHOS-10)
  • Place of Presentation: Okinawa, Japan
  • Year and Date: 2014-12-14 – 2014-12-28
• [Presentation] ガス吹き込みによる非球形粒子ベッドのレベリング特性に関する研究 (2014)
  • Author(s): 松岡史也, 西津平, 錦戸達也, 松元達也, 守田幸路
  • Organizer: 日本原子力学会九州支部第33回研究発表講演会
  • Place of Presentation: 九州大学（福岡市）
  • Year and Date: 2014-12-13
• [Presentation] デブリベッドのセルフ･レベリングに関する研究：非球形粒子ベッドのレベリング特性 (2014)
  • Author(s): 西 津平, 錦戸達也, 竹田祥平, 松元達也, 守田幸路
  • Organizer: 日本原子力学会「2014年秋の大会」
  • Place of Presentation: 京都大学（京都市）
  • Year and Date: 2014-09-08 – 2014-09-10
• [Presentation] Validation of a 3D Hybrid CFD-DEM Method Based on a Self-Leveling Experiment (2014)
  • Author(s): L. Guo, K. MORITA, H. TAGAMI, Y. TOBITA
  • Organizer: 2014 22nd International Conference on Nuclear Engineering (ICONE22)
  • Place of Presentation: Prague, Czech Republic
  • Year and Date: 2014-07-07 – 2014-07-11
• [Presentation] 固体粒子ベッドにおけるセルフレベリング特性の定量的評価に関する研究 (2013)
  • Author(s): 竹田祥平、西 津平、錦戸達也、松元達也、守田幸路
  • Organizer: 日本原子力学会九州支部第32回研究発表講演会
  • Place of Presentation: 九州大学（福岡市）
• [Presentation] Recent Knowledge from an Experimental Investigation on Self-Leveling Behavior of Debris Bed (2013)
  • Author(s): S. CHENG, H. YAMANO, T. SUZUKI, Y. TOBITA, Y. NAKAMURA, S. TAKETA, S. NISHI, B. ZHANG, T. MATSUMOTO, K. MORITA
  • Organizer: 2013 21th International Conference on Nuclear Engineering (ICONE21)
  • Place of Presentation: Chengdu, China