Oral presentation

[1G01-07] Nuclear Thermal Hydraulics

Wed. Sep 6, 2023 10:00 AM - 11:55 AM Room G (ES Bildg. 2F ES021)

Chair:Norio Sakai(TOSHIBA ESS)

10:00 AM - 10:15 AM

[1G01] Development of Low Pressure Drop Separator for BWRs

(1) Overview of the Development Plan

*Kazuaki Kito¹, Kenichi Katono¹, Kenichi Yasuda¹, Antonin Povolny¹, Naoyuki Ishida¹, Kiyoshi Fujimoto¹ (1. HGNE)

10:15 AM - 10:30 AM

[1G02] Development of Low Pressure Drop Separator for BWRs

(2) Study on Low Pressure Drop Separator Shape using CFD and Scaled Testing

*Antonin Povolny¹, Kenichi Katono¹, Naoyuki Ishida¹, Kiyoshi Fujimoto¹, Kenichi Yasuda¹, Kazuaki Kito¹ (1. HGNE)

10:30 AM - 10:45 AM

[1G03] Development of Low Pressure Drop Separator for BWRs

(3) Validation of Pressure Drop and Carryunder Measurement Method in HUSTLE

*Kenichi Katono¹, Kiyoshi Fijimoto¹, Antonin Povolny¹, Naoyuki Ishida¹, Kenichi Yasuda¹, Kazuaki Kito¹ (1. HGNE)

10:45 AM - 11:00 AM

[1G04] Development of Low Pressure Drop Separator for BWRs

(4) Validation of Carryover Measurement Method in HUSTLE

*Naoyuki Ishida¹, Kiyoshi Fujimoto¹, Kenichi Katono¹, Antonin Povolny¹, Kenichi Yasuda¹, Kazuaki Kito¹ (1. HGNE)

11:00 AM - 11:15 AM

[1G05] Void fraction distribution in 5x5 rod bundle during boil-off process

*Shota Ueda¹, Takahiro Arai¹, Masahiro Furuya¹, Riichiro Okawa¹, Atsushi Ui¹, Kenetsu Shirakawa¹, Tadakatsu Yodo² (1. CRIEPI, 2. MHI)

11:15 AM - 11:30 AM

[1G06] Wall Friction in a 3×3 Rod Bundle under Stagnant Liquid Conditions

*Michio Murase¹, Koji Nishida¹, Toshiya Takaki¹, Shin-ichiro Kida², Ryo Kurimoto², Kosuke Hayashi², Akio Tomiyama² (1. Institute of Nuclear Safety System, Inc., 2. Kobe University)

11:30 AM - 11:45 AM

[1G07] Research and development for understanding two-phase flow behavior inside a fuel bundle

(11) Void redistribution behavior downstream of part-length rods in rod bundle

*Takahiro Arai¹, Atsushi Ui¹, Masahiro Furuya¹, Riichiro Okawa¹, Tsugumasa Iiyama¹, Shota Ueda¹, Kenetsu Shirakawa¹ (1. CRIEPI)

Time reserved for Chair （11:45 AM - 11:55 AM）

Oral presentation

[1G08-12] Multiphase Flow

Wed. Sep 6, 2023 2:45 PM - 4:10 PM Room G (ES Bildg. 2F ES021)

Chair:Miki Saito(CRIEPI)

2:45 PM - 3:00 PM

[1G08] Study on the Effect of Air Flowrate and Subcooled Degree on Boiling Entrainment Rate from a Liquid Film Flowing Downwards on a Vertically Heated Surface

*Raka Firman Baskara Permana¹, Tomio Okawa¹, Nade Kaito¹, Yuki Narushima², Kenichi Katono², Hajime Furuichi² (1. The University of Electro-Communications Tokyo, 2. Hitachi, Ltd.)

3:00 PM - 3:15 PM

[1G09] Visual observation of droplet behavior due to run-off effect of BWR spacer with swirl vanes

*Riichiro Okawa¹, Masahiro Furuya¹, Takahiro Arai¹, Tsugumasa Iiyama¹ (1. CRIEPI)

3:15 PM - 3:30 PM

[1G10] Numerical simulation of droplet entrainment and deposition phenomena in annular dispersed flow

*Naoki Horiguchi¹, Hiroyuki Yoshida¹, Yuki Narushima², Kenichi Katono² (1. JAEA, 2. Hitachi)

3:30 PM - 3:45 PM

[1G11] Experimental study on the flow regime and breakup of liquid jet discharged from sudden contraction nozzle

*Guofu Sun¹, Tomio Okawa¹, Mitsuhiro Aoyagi², Akihiro Uchibori², Yasushi Okano² (1. UEC, 2. JAEA)

3:45 PM - 4:00 PM

[1G12] Visualization of horizontal jet diffusion behavior of solutions with different densities

*Tsugumasa Iiyama¹, Takahiro Arai¹, Masahiro Furuya¹, Riichiro Okawa¹ (1. CRIEPI)

Time reserved for Chair （4:00 PM - 4:10 PM）

Oral presentation

[1G13-18] Thermal Hydraulics in Fast Reactor

Wed. Sep 6, 2023 4:10 PM - 5:50 PM Room G (ES Bildg. 2F ES021)

Chair:Naoya Odaira(Kyoto Univ.)

4:10 PM - 4:25 PM

[1G13] Study on coolant behavior in damaged core of sodium-cooled fast reactor

Evaluation of interfacial drag term for high accuracy pressure drop prediction

*Tomohiro Mizuno¹, Naoya Odaira¹, Daisuke Ito¹, Kei Ito¹, Yasushi Saito¹, Yuya Imaizumi², Kenichi Matsuba², Kenji Kamiyama² (1. Kyoto Univ., 2. JAEA)

4:25 PM - 4:40 PM

[1G14] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(11)Improvement of simulation system applicability and user convenience

*Akihiro Uchibori¹, Masateru Sonehara¹, Mitsuhiro Aoyagi¹, Yasushi Okano¹, Takashi Takata¹ (1. JAEA)

4:40 PM - 4:55 PM

[1G15] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(12) Validation of RVACS model for PRISM-type reactor condition

*Takashi Abe¹, Kazuhiro Fujimata¹, Hirotaka Nakahara¹, Mitsuhiro Aoyagi² (1. HGNE, 2. JAEA)

4:55 PM - 5:10 PM

[1G16] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(13) Model development for fuel failure determination and post-failure behavior

*Tohru Suzuki¹, Shuntaro Aono¹, Sho Fuchita², Shinya Ishida³, Yasushi Okano³ (1. TCU, 2. HGNE, 3. JAEA)

5:10 PM - 5:25 PM

[1G17] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(14) Trial measurement for thermophysical properties of molten materials

*Yuji Ohishi¹, Tomoya Takatani¹, Shun Fujieda¹, Hiroaki Muta¹, Toshiki Kondo², Shin Kikuchi² (1. Osaka Univ., 2. JAEA)

5:25 PM - 5:40 PM

[1G18] Evaluation on Temperature of Reaction Jet caused by Sodium-Water Reaction in Steam Generator of Sodium-Cooled Fast Reactor Using Particle Method

*Shun Togasaki¹, Sunghyon Jang¹, Munemichi Kawaguchi¹, Kazuhiro Sawa¹, Wataru Kosaka², Akihiro Uchibori², yasushi Okano² (1. Hokkaido Univ., 2. JAEA)

Time reserved for Chair （5:40 PM - 5:50 PM）

Oral presentation

[2G01-04] Phase Change

Thu. Sep 7, 2023 9:45 AM - 10:50 AM Room G (ES Bildg. 2F ES021)

Chair:Naoki Horiguchi(JAEA)

9:45 AM - 10:00 AM

[2G01] A Study on Measures to Prevent Flashing by Laser Cavitation (2)

*Koichi Kawaguchi¹, Tomoomi Segawa¹, Katsunori Ishii¹, Toshihisa Tsuchida², Noor Hamdan², Akiko Kaneko² (1. JAEA, 2. Univ. of Tsukuba)

10:00 AM - 10:15 AM

[2G02] Numerical simulation for condensation heat transfer of steam-air mixture on the vertical flat plate under mixed convection flow condition

*Yoichi Utanohara¹, Michio Murase², Toshiya Takaki² (1. Komatsu University, 2. INSS)

10:15 AM - 10:30 AM

[2G03] Effect of Internal Microstructure of Metal Micro Honeycomb Porous Plate on Pool Boiling Critical Heat Flux

*Yuya Hayashida¹, Yutaro Umehara¹, Atsuro Etoh¹, Shoji Mori¹ (1. Kyushu Univ.)

10:30 AM - 10:45 AM

[2G04] Evaluation of Wall Condensation Heat Transfer in Three-Component Gases Including Light Gas

*Toshiya Takaki¹, Michio Murase¹ (1. INSS)

Time reserved for Chair （10:45 AM - 10:50 AM）

Oral presentation

[2G05-08] Severe Accident

Thu. Sep 7, 2023 10:50 AM - 12:00 PM Room G (ES Bildg. 2F ES021)

Chair:Tadakatsu Yodo(MHI)

10:50 AM - 11:05 AM

[2G05] Source-term analyses of domestic 3loop PWR plant using MELCOR2.2

(1) Basic modeling policy and consideration of the water injection management

*Masami TAIRA¹, Wataru KIKUCHI¹, Junichi KANEKO¹, Akitoshi HOTTA¹, Saoto FUKUI², Tadashi KAMATA³ (1. Nuclear Regulation Authority, 2. AdvanceSoft, 3. FMIC R&D)

11:05 AM - 11:20 AM

[2G06] Source-term analyses of domestic 3loop PWR plant using MELCOR2.2

(2) Effects of water injection management in CCWS sequence

*Wataru Kikuchi¹, Masami Taira¹, Junichi Kaneko¹, Akitishi Hotta¹, Kamada Tadashi², Saoto Fukui³ (1. Nuclear Regulation Authority, Researcher Division of Research for Severe Accident, 2. FMIC R&D INC., 3. Advance Soft Corporation)

11:20 AM - 11:35 AM

[2G07] Development of Numerical Simulation Method to Evaluate Heat Transfer of Fuel Debris in Air Cooling

(5) Preliminary Analysis of Thermal Behavior in PCV

*Shinichiro Uesawa¹, Ayako Ono¹, Susumu Yamashita¹, Hiroyuki Yoshida¹ (1. JAEA)

11:35 AM - 11:50 AM

[2G08] Influence of rupture location in multiple steam generator tube rupture

*Shinya Ueda¹, Tadashi Watanabe¹, Masahiro Ishigaki¹ (1. UNIVERSITY OF FUKUI)

Time reserved for Chair （11:50 AM - 12:00 PM）

Oral presentation

[2G09-13] Numerical Analysis

Thu. Sep 7, 2023 2:45 PM - 4:05 PM Room G (ES Bildg. 2F ES021)

Chair:Kenichi Katono(HGNE)

2:45 PM - 3:00 PM

[2G09] Application of subchannel analysis to the evaluation of cladding temperatures during accidents

(1) Implementation of the Zircaloy-Water Reaction Correlation

*Koji Nishida¹, Naoki Sano¹, Seitaro Sakurai¹ (1. INSS)

3:00 PM - 3:15 PM

[2G10] Application of subchannel analysis to the evaluation of cladding temperatures during accidents

(2) Implementation of the Void Drift Model

*Naoki Sano¹, Koji Nishida¹, Seitaro Sakurai¹ (1. INSS)

3:15 PM - 3:30 PM

[2G11] Development of Advanced Neutronics/Thermal-Hydraulics Coupling Simulation System

(9) Development of Measurement Method for Gas-Liquid Two-Phase flow inside a Fuel Bundle to Obtain Code Validation Data

*Ayako Ono¹, Kaoru Okamoto², Yasushi Makino², Shigeo Hosokawa³, Hiroyuki Yoshida¹ (1. JAEA, 2. NDC, 3. Kansai Univ.)

3:30 PM - 3:45 PM

[2G12] Numerical Simulation of Two-Phase Flow in Porous Media based on Two-Fluid Model

*Hiroyuki Yoshida¹, Naoki Horiguchi¹ (1. JAEA)

3:45 PM - 4:00 PM

[2G13] Heat transfer characteristics by natural convection in a one-side heated vertical rectangular channel

*Rintaro Yoshida¹, Tetsuaki Takeda² (1. Graduate School of Engineering, Univ. of Yamanashi, 2. Univ. of Yamanashi)

Time reserved for Chair （4:00 PM - 4:05 PM）

Oral presentation

[2G14-21] AI Technology

Thu. Sep 7, 2023 4:05 PM - 6:15 PM Room G (ES Bildg. 2F ES021)

Chair:Shoji Mori(Kyushu Univ.)

4:05 PM - 4:20 PM

[2G14] Development of a gas-liquid two-phase flow experiment database and a simulator-based machine learning method

*Miki Saito¹, Taizo Kanai¹ (1. CRIEPI)

4:20 PM - 4:35 PM

[2G15] Fuel Redistribution Method in Spent Fuel Pool

*Masahiro Furuya¹, Keigo Murata², Takayuki Suzuki², Baku Suzuki³ (1. Waseda Univ., 2. GNESC, 3. JAPC)

4:35 PM - 4:50 PM

[2G16] Integration of AI Technology and Thermal Hydraulics for the Development of a Data-Driven Methodology for Plant Safety Assessment

(1) Evaluation of Flow Regime Transition in Vertical Upward Two-Phase Flow using Deep Learning

*Shuichiro Miwa¹, Kohei Eguchi² (1. UTokyo, 2. Hokkaido Univ.)

4:50 PM - 5:05 PM

[2G17] Integration of AI Technology and Thermal Hydraulics for the Development of a Data-Driven Methodology for Plant Safety Assessment

(2) Interaction Between Nucleation Sites in Subcooled Flow Boiling and Application of AI Image Analysis

*Ryoma Tsujimura¹, Binh Thanh Nguyen¹, Tomio Okawa¹, Wen Zhou², Shuichiro Miwa² (1. UEC, 2. UTokyo)

5:05 PM - 5:20 PM

[2G18] Integration of AI Technology and Thermal Hydraulics for the Development of a Data-Driven Methodology for Plant Safety Assessment

(3) Robust condensation bubble feature extraction in subcooled flow boiling using object detection and tracking technique

*Wen Zhou¹, Shuichiro Miwa¹, Tomio Okawa² (1. UTokyo, 2. UEC)

5:20 PM - 5:35 PM

[2G19] Integration of AI Technology and Thermal Hydraulics for the Development of a Data-Driven Methodology for Plant Safety Assessment

(4) Bubble entrainment analysis by water jet using JUPITER code and estimation of penetration length by machine learning

*Susumu Yamashita¹, Zhou Wen², Shuichiro Miwa² (1. JAEA, 2. UTokyo)

5:35 PM - 5:50 PM

[2G20] Integration of AI Technology and Thermal Hydraulics for the Development of a Data-Driven Methodology for Plant Safety Assessment

(5) Investigation of LSTM models for the prediction of LOCA accident events

*Johndel B Obra¹, Shuichiro Miwa¹ (1. The University of Tokyo)

5:50 PM - 6:05 PM

[2G21] Integration of AI Technology and Thermal Hydraulics for the Development of a Data-Driven Methodology for Plant Safety Assessment

(6)Parameter analysis for LWR accident by deep neural networks using CNN and Transformer

*Kenji Aragane¹, Takumi Kitao¹, Shinsuke Tanaka¹, Masaaki Mori¹, Shuichiro Miwa² (1. NEL, 2. UTokyo)

Time reserved for Chair （6:05 PM - 6:15 PM）

Sessions

III. Fission Energy Engineering » 304-1 Thermal Hydraulics, Energy Conversion, Energy Transfer, Energy Storage

[1G01-07] Nuclear Thermal Hydraulics

(1) Overview of the Development Plan

(2) Study on Low Pressure Drop Separator Shape using CFD and Scaled Testing

(3) Validation of Pressure Drop and Carryunder Measurement Method in HUSTLE

(4) Validation of Carryover Measurement Method in HUSTLE

(11) Void redistribution behavior downstream of part-length rods in rod bundle

[1G08-12] Multiphase Flow

[1G13-18] Thermal Hydraulics in Fast Reactor

Evaluation of interfacial drag term for high accuracy pressure drop prediction

(11)Improvement of simulation system applicability and user convenience

(12) Validation of RVACS model for PRISM-type reactor condition

(13) Model development for fuel failure determination and post-failure behavior

(14) Trial measurement for thermophysical properties of molten materials

[2G01-04] Phase Change

[2G05-08] Severe Accident

(1) Basic modeling policy and consideration of the water injection management

(2) Effects of water injection management in CCWS sequence

(5) Preliminary Analysis of Thermal Behavior in PCV

[2G09-13] Numerical Analysis

(1) Implementation of the Zircaloy-Water Reaction Correlation

(2) Implementation of the Void Drift Model

(9) Development of Measurement Method for Gas-Liquid Two-Phase flow inside a Fuel Bundle to Obtain Code Validation Data

[2G14-21] AI Technology

(1) Evaluation of Flow Regime Transition in Vertical Upward Two-Phase Flow using Deep Learning

(2) Interaction Between Nucleation Sites in Subcooled Flow Boiling and Application of AI Image Analysis

(3) Robust condensation bubble feature extraction in subcooled flow boiling using object detection and tracking technique

(4) Bubble entrainment analysis by water jet using JUPITER code and estimation of penetration length by machine learning

(5) Investigation of LSTM models for the prediction of LOCA accident events

(6)Parameter analysis for LWR accident by deep neural networks using CNN and Transformer

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