Oral presentation

[1J05-09] Thermal Hydraulics of Sodium-Cooled Fast Reactors 1

Wed. Sep 8, 2021 2:45 PM - 4:10 PM Room J

chair: Yoichi Utanohara (INSS)

2:45 PM - 3:00 PM

[1J05] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(1)Overall plan for development of systems

*Takashi Takata¹, Hirotaka Nakahara², Tohru Suzuki³, Yuji Ohishi⁴ (1. Japan Atomic Energy Agency, 2. Hitachi-GE Nuclear Energy, 3. Tokyo City University, 4. Osaka University)

3:00 PM - 3:15 PM

[1J06] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(2)Development plan of integrated numerical simulation system for severe accident analysis

*Akihiro Uchibori¹, Ken-ichi Kawada¹, Mitsuhiro Aoyagi¹, Takashi Takata¹, Hirotaka Nakahara², Takashi Abe² (1. JAEA, 2. HGNE)

3:15 PM - 3:30 PM

[1J07] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(3)Development plan of enhancement of system convenience

*Mitsuhiro Aoyagi¹, Yasuhiro Enuma¹, Masateru Sonehara¹, Wataru Kosaka¹ (1. JAEA)

3:30 PM - 3:45 PM

[1J08] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(4)Development of evaluation model for core melting

*Tohru Suzuki¹, Haruki Honda¹, Yu Takahashi¹, Ken-ichi Kawada² (1. Tokyo City Univ., 2. JAEA)

3:45 PM - 4:00 PM

[1J09] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(5)Development plan of thermophysical property database

*Yuji Ohishi¹, Yifan Sun¹, Tomoya Takatani¹, Hiroaki Muta¹, Toshiki Kondo², Shin Kikuchi² (1. Osaka Univ., 2. JAEA)

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

Oral presentation

[1J10-13] Thermal Hydraulics of Sodium-Cooled Fast Reactors 2

Wed. Sep 8, 2021 4:10 PM - 5:15 PM Room J

chair: Tohru Suzuki (TCU)

4:10 PM - 4:25 PM

[1J10] Experimental study on flow regime and breakup of Liquid jet discharged from oval nozzle

*Guofu Sun¹, Yi Zhan¹, Tomio Okawa¹, Takashi Takata², Mitsuhiro Aoyagi² (1. The University of Electro-Communications, 2. Japan Atomic Energy Agency)

4:25 PM - 4:40 PM

[1J11] Evaluation of a High-Speed Gas Jet Behavior into a Liquid Pool and Entrained Droplets phenomena

*Masafumi Saito¹, Akiko Kaneko¹, Akihiro Uchbori², Akikazu Kurihara², Takashi Takata², Hiroyuki Ohshima² (1. University of Tsukuba, 2. JAEA)

4:40 PM - 4:55 PM

[1J12] Prediction of Wastage Rate in Sodium-Water Reaction by Hierarchical Bayesian Approach

*Hidenori Matsui¹, Akira Yamaguchi¹, Takashi Takata¹, Sunghyon Jang¹ (1. UTokyo)

4:55 PM - 5:10 PM

[1J13] Study on cooling process of decay heat removal systems in a reactor vessel of sodium-cooled fast reactor by scaled water experiments

(5)Transient behavior under operations of multiple decay heat removal systems

*Kosuke Aizawa¹, Mitsuyo Tsuji¹, Jun Kobayashi¹, Akikazu Kurihara¹, Shigeru Nakane², Hideyoshi Onuma³ (1. JAEA, 2. NESI, 3. Ascend)

Time reserved for Chair （5:10 PM - 5:15 PM）

Oral presentation

[2J01-03] Pool Scrubbing

Thu. Sep 9, 2021 9:30 AM - 10:30 AM Room J

chair: Akihiro Uchibori (JAEA)

9:30 AM - 9:45 AM

[2J01] Experimental evaluation and modeling of gas-liquid two phase flow during pool scrubbing

*Kohei Yoshida¹, Kota Fujiwara¹, Sasuke Kadoma¹, Akiko Kaneko¹ (1. Univ. of Tsukuba)

9:45 AM - 10:00 AM

[2J02] Aerosol decontamination phenomena in a single bubble by pool scrubbing

*Kota Fujiwara¹, Kohei Yoshida¹, Sasuke Kadoma¹, Akiko Kaneko¹ (1. Univ. of Tsukuba)

10:00 AM - 10:15 AM

[2J03] Scaling laws for aerosol removal from a single spherical bubble

*Kosuke Motegi¹, Yutaka Kukita¹, Yasuteru Yasuteru Sibamoto¹ (1. JAEA)

Time reserved for Chair （10:15 AM - 10:30 AM）

Oral presentation

[2J04-08] Fukushima Daiichi NPS Accident

Thu. Sep 9, 2021 10:30 AM - 12:00 PM Room J

chair: Akitoshi Hotta (NRA)

10:30 AM - 10:45 AM

[2J04] Investigation on accident progression of 1F2 during the 7 hours after the depressurization using MELCOR-2.2

*Shotaro Osako¹, Akifumi Yamaji¹, Xin Li² (1. Waseda University, Cooperative Major in Nuclear Energy, 2. Waseda Research Institute for Science and Engineering)

10:45 AM - 11:00 AM

[2J05] Investigation of Accident Scenario and Fission Products Behaviors in Fukushima Daiichi Nuclear Power Plant using SAMPSON code

(3)Estimation of Pressure behaviors of Unit-3 using SAMPSON code

*Chiaki Kino¹, Kenichi Tezuka¹ (1. IAE)

11:00 AM - 11:15 AM

[2J06] Estimation of the In-Depth Debris Status of Fukushima Unit-2 and Unit-3 with Multi-Physics Modeling

(9)Fukushima-Daiichi Unit-3 Plant Data Analysis Focusing on Estimated Fuel Debris Relocation to the Pedestal

*Ikken Sato¹, Akifumi Yamaji², Masahiro Furuya², Yuji Ohishi³, Xin Li², Hiroshi Madokoro¹, Hirofumi Fukai² (1. Japan Atomic Energy Agency, 2. Waseda University, 3. Osaka University)

11:15 AM - 11:30 AM

[2J07] Estimation of the In-Depth Debris Status of Fukushima Unit-2 and Unit-3 with Multi-Physics Modeling

(10)Evaluation of debris relocation and interaction with pedestal structures in Fukushima Daichi Unit-3 with MPS method

*Xin Li¹, Akifumi Yamaji¹, Ikken Sato², Masahiro Furuya¹, Hiroshi Madokoro², Yuji Ohishi³ (1. Waseda Univ., 2. JAEA, 3. Osaka Univ.)

11:30 AM - 11:45 AM

[2J08] LIVE experiment on thermal behavior of solid-liquid mixture pool in RPV lower head

*Hiroshi Madokoro¹, Xiaoyang Gaus-Liu², Thomas Cron², Beatrix Fluhrer², René Stängle², Thomas Wenz², Mike Vervoortz², Takuya Yamashita¹, Ikken Sato¹, Shinya Mizokami^1,3 (1. JAEA, 2. KIT, 3. TEPCO HD)

Time reserved for Chair （11:45 AM - 12:00 PM）

Oral presentation

[2J09-13] Severe Accident 1

Thu. Sep 9, 2021 2:45 PM - 4:15 PM Room J

chair: Riichiro Okawa (CRIEPI)

2:45 PM - 3:00 PM

[2J09] Evaluation on Reactor Core Degradation and Relocation at Severe Accident

(1)MAAP5 analytical conditions of LOFT LP-FP-2 test

*Koji Nishida¹, Naoki Sano¹, Takayoshi Kusunoki¹, Michio Murase¹ (1. INSS)

3:00 PM - 3:15 PM

[2J10] Molten droplet oxidation of stainless-steel and zirconium in a water pool

*Takahiro Arai¹, Masahiro Furuya¹, Erik de Malmazet² (1. CRIEPI, 2. EdF)

3:15 PM - 3:30 PM

[2J11] Development of molten debris sedimentation and agglomeration models in JBREAK

*Wataru Kikuchi¹, Akitoshi Hotta¹ (1. Nuclear Regulation Authority)

3:30 PM - 3:45 PM

[2J12] Influence of liquid phase flow on eutectic melting of solid Sn in Sn-Bi molten pool

*Shota Ueda¹, Inagaki Kenta¹, Masahiro Kondo², Koji Okamoto³ (1. CRIEPI, 2. AIST, 3. UT)

3:45 PM - 4:00 PM

[2J13] Reaction behavior of BWR lower head structure and molten metals

*Takumi Sato¹, Takuya Tamashita¹, Hiroshi Madokoro¹, Yuji Nagae¹ (1. JAEA)

Time reserved for Chair （4:00 PM - 4:15 PM）

Oral presentation

[2J14-19] Severe Accident 2

Thu. Sep 9, 2021 4:15 PM - 6:00 PM Room J

chair: Chiaki Kino (IAE)

4:15 PM - 4:30 PM

[2J14] Study on debris cooling and development of experiments on coolability of particle debris

(1)Overall plan

*Miyuki Akiba¹, Akitoshi Hotta¹, Wataru Kikuchi¹ (1. NRA)

4:30 PM - 4:45 PM

[2J15] Study on debris cooling and development of experiments on coolability of particle debris

(2)Development status of analysis code for particle debris coolability

*Akitoshi Hotta¹, Miyuki Akiba¹, Wataru Kikuchi¹, Riichiro Okawa², Shota Ueda², Takahiro Arai², Masahiro Furuya² (1. NRA, 2. CRIEPI)

4:45 PM - 5:00 PM

[2J16] Study on debris cooling and development of experiments on coolability of particle debris

(3)Program of experiments on coolability of particle debris

*Riichiro Okawa¹, Syota Ueda¹, Takahiro Arai¹, Masahiro Furuya¹, Miyuki Akiba², Akitoshi Hotta², Wataru Kikuchi² (1. CRIEPI, 2. NRA)

5:00 PM - 5:15 PM

[2J17] Experimental study on spreading and solidification behavior of molten metal impinged into water

*Ryo Yokoyama¹, Shunichi Suzuki¹, Masahiro Kondo², Koji Okamoto¹ (1. Univ. of Tokyo, 2. AIST)

5:15 PM - 5:30 PM

[2J18] Penetration Behavior of Liquid Jet Falling into a Shallow Pool

(10)Experimental Investigation of Liquid Film Spreading Behavior

*Sota Yamamura¹, Hiroyuki Yoshida², Naoki Horiguchi², Akiko Kaneko¹ (1. Univ. of Tsukuba, 2. JAEA)

5:30 PM - 5:45 PM

[2J19] Penetration behavior of liquid jet falling into a shallow pool

(11)Evaluation of moving fragments' velocity

*Naoki Horiguchi¹, Sota Yamamura², Kota Fujiwara², Hiroyuki Yoshida¹, Akiko Kaneko² (1. Japan Atomic Energy Agency, 2. University of Tsukuba)

Time reserved for Chair （5:45 PM - 6:00 PM）

Oral presentation

[3J01-04] Boiling & Condensation

Fri. Sep 10, 2021 9:30 AM - 10:45 AM Room J

chair: Wei Liu (Kyusyu Univ.)

9:30 AM - 9:45 AM

[3J01] Study on quantification of condensation behavior based on a visualization experiment

*Tatsuki Hara¹, Tohru Suzuki¹, Yuya Imaizumi², Ken-ichi Matsuba², Kenji Kamiyama² (1. Tokyo City Univ., 2. JAEA)

9:45 AM - 10:00 AM

[3J02] Experiments on the onset criteria of boiling entrainment from a falling liquid film

*Junpei Tabuchi¹, Raka Firman¹, Tomio Okawa¹, Yuki Narushima², Hajime Furuichi², Kenichi Katono² (1. UEC, 2. Hitachi)

10:00 AM - 10:15 AM

[3J03] Effect of splashed droplets during liquid film cooling of high-temperature parallel plates

*Keisuke Nanri¹, Yutaro Umehara¹, Tomio Okawa¹ (1. The University of Electro-Communications)

10:15 AM - 10:30 AM

[3J04] Development of the simplified boiling model applied for the large scale simulation

*Ayako Ono¹, Susumu Yamashita¹, Hiroto Sakashita², Takayuki Suzuki¹, Hiroyuki Yoshida¹ (1. JAEA, 2. Hokkaido Univ.)

Time reserved for Chair （10:30 AM - 10:45 AM）

Oral presentation

[3J05-08] Single Phase Flow

Fri. Sep 10, 2021 10:45 AM - 12:00 PM Room J

chair: Tohru Suzuki (TCU)

10:45 AM - 11:00 AM

[3J05] Research on temperature mixing phenomenon during reactor vessel accident with LIF

*Yuriko Shiomi¹, Kazuhiro Yoshida¹, Kei Higashi¹, Hideyuki Sakata¹, Tomoaki Ogata¹, Yashushi Makino², Koushi Taguchi³ (1. MHI, 2. NDC, 3. KEPCO)

11:00 AM - 11:15 AM

[3J06] Study of a Fuel-Salt to Coolant-Salt Heat Exchanger for Molten Salt Fast Reactor

*Hiroyasu Mochizuki¹ (1. Tokyo Institute of Technology)

11:15 AM - 11:30 AM

[3J07] Construction and Performance Testing of Fluoride Molten Salt Loop

*Motoyasu Kinoshita¹, Aji Indarta², Kaito Kubo^1,2, Tastumi Arima², Kazunari Katayama² (1. MOSTECH, 2. Kyushu Univ.)

11:30 AM - 11:45 AM

[3J08] Numerical Simulations of Wall Temperature Fluctuation Caused by Penetration Flow into a Branch Pipe of Mixing Tee

*Yoichi Utanohara¹, Koji Miyoshi¹, Masayuki Kamaya¹ (1. INSS)

Time reserved for Chair （11:45 AM - 12:00 PM）

Oral presentation

[3J09-15] Gas-liquid Two-phase Flow

Fri. Sep 10, 2021 2:45 PM - 4:45 PM Room J

chair: Hiroyuki Yoshida (JAEA)

2:45 PM - 3:00 PM

[3J09] Operating Conditions of Supersonic Steam Injector Considering Scale Effect

*Minamizono Yukiya¹, Eita Koyama¹, Akiko Kaneko¹, Yutaka Abe² (1. Univ. of Tsukuba, 2. Univ. of Tsukuba professor emeritus)

3:00 PM - 3:15 PM

[3J10] Development of a gas-liquid two-phase flow machine-learning model based on experimental data

*Miki Saito¹, Taizo Kanai¹, Satoshi Nishimura¹ (1. CRIEPI)

3:15 PM - 3:30 PM

[3J11] Development of thermal-hydraulics calculation module for reactivity accident simulation

*Hiroshi Haraguchi¹, Go Chiba¹ (1. Hokkaido Univ.)

3:30 PM - 3:45 PM

[3J12] Evaluation of effects of non-condensable gas injection on circulation capability of two-phase natural circulation loop.

*Tetsuya Takada¹, Yasunori Yamamoto¹, Go Chiba¹ (1. Hokkaido Univ.)

3:45 PM - 4:00 PM

[3J13] Research and development for understanding of liquid-film flow behavior around fuel rods in BWRs’ fuel rod bundle

(5)Simultaneous measurement of liquid-film thickness and wave velocity under atmospheric pressure condition using an optical waveguide film

*Hajime Furuichi¹, Kiyoshi Fujimoto¹, Kenichi Katono¹, Masaki Ikeda¹, Kenichi Yasuda¹, Kazuaki Kito¹ (1. Hitachi-GE Nuclear Energy, Ltd.)

4:00 PM - 4:15 PM

[3J14] Effects of Water Level in the Upper Tank on Flow Characteristics in a Vertical Pipe under Flooding at Its Top End

*Toshiya Takaki¹, Ryo Kurimoto², Kosuke Hayashi², Michio Murase¹, Akio Tomiyama² (1. INSS, 2. Kobe Univ.)

4:15 PM - 4:30 PM

[3J15] Counter-Current Flow Limitation in Rod Bundles

*Michio Murase¹, Takaki Toshiya¹, Koji Nishida¹, Akio Tomiyama² (1. Institute of Nuclear Safety System, Inc., 2. Kobe University)

Time reserved for Chair （4:30 PM - 4:45 PM）

Sessions

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

[1J05-09] Thermal Hydraulics of Sodium-Cooled Fast Reactors 1

(1)Overall plan for development of systems

(2)Development plan of integrated numerical simulation system for severe accident analysis

(3)Development plan of enhancement of system convenience

(4)Development of evaluation model for core melting

(5)Development plan of thermophysical property database

[1J10-13] Thermal Hydraulics of Sodium-Cooled Fast Reactors 2

(5)Transient behavior under operations of multiple decay heat removal systems

[2J01-03] Pool Scrubbing

[2J04-08] Fukushima Daiichi NPS Accident

(3)Estimation of Pressure behaviors of Unit-3 using SAMPSON code

(9)Fukushima-Daiichi Unit-3 Plant Data Analysis Focusing on Estimated Fuel Debris Relocation to the Pedestal

(10)Evaluation of debris relocation and interaction with pedestal structures in Fukushima Daichi Unit-3 with MPS method

[2J09-13] Severe Accident 1

(1)MAAP5 analytical conditions of LOFT LP-FP-2 test

[2J14-19] Severe Accident 2

(1)Overall plan

(2)Development status of analysis code for particle debris coolability

(3)Program of experiments on coolability of particle debris

(10)Experimental Investigation of Liquid Film Spreading Behavior

(11)Evaluation of moving fragments' velocity

[3J01-04] Boiling & Condensation

[3J05-08] Single Phase Flow

[3J09-15] Gas-liquid Two-phase Flow

(5)Simultaneous measurement of liquid-film thickness and wave velocity under atmospheric pressure condition using an optical waveguide film

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