Oral presentation

[2L01-04] Severe Accident

Thu. Sep 8, 2022 9:30 AM - 10:35 AM Room L (E1 Bildg.4F No.44)

Chair:Akihiro Uchibori(JAEA)

9:30 AM - 9:45 AM

[2L01] Penetration Behavior of Liquid Jet Falling into a Shallow Pool

(12)Estimation of Fragmentation Amount

*Naoki Horiguchi¹, Akiko Kaneko², Hiroyuki Yoshida¹, Yutaka Abe² (1. JAEA, 2. Univ. of Tsukuba)

9:45 AM - 10:00 AM

[2L02] Multi-dimensional two-phase flow measurements in simulated particle debris

*Shota Ueda¹, Takahiro Arai¹, Okawa Riichiro¹, Furuya Masahiro¹ (1. CRIEPI)

10:00 AM - 10:15 AM

[2L03] Experimental study with microjet to elucidate the fragmentation process of small-scale vapor explosion

*Kazui Shindo¹, Shunsuke Kanno¹, Kunihito Matsumura¹ (1. Ibaraki Univ.)

10:15 AM - 10:30 AM

[2L04] Analysis of mass transfer effect on iodine release from aqueous phase under severe accident conditions

*Giedre Zablackaite¹, Hiroyuki Shiotsu¹, Kentaro Kido¹, Tomoyuki Sugiyama¹ (1. JAEA)

Time reserved for Chair （10:30 AM - 10:35 AM）

Oral presentation

[2L05-09] Numerical Analysis

Thu. Sep 8, 2022 10:35 AM - 12:00 PM Room L (E1 Bildg.4F No.44)

Chair:Riichiro Okawa(CRIEPI)

10:35 AM - 10:50 AM

[2L05] Evaluation on Reactor Core Degradation and Relocation at Severe Accident

(2) MAAP5 Analysis for Phebus FPT0 Test

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

10:50 AM - 11:05 AM

[2L06] Phebus Analysis using SAMPSON/JUPITER coupling simulation methods

*Chiaki Kino¹, Kenichi Tezuka¹, Susumu Yamashita², Hiroyuki Yoshida² (1. IAE, 2. JAEA)

11:05 AM - 11:20 AM

[2L07] Development of Numerical Simulation Method to Evaluate Heat Transfer of Fuel Debris in Air Cooling

(3) Validation of Porous Model in JUPITER for Forced Convection

*Shinichiro Uesawa¹, Susumu Yamashita¹, Mitsuhiko Shibata¹, Hiroyuki Yoshida¹ (1. JAEA)

11:20 AM - 11:35 AM

[2L08] Analysis of Reproducibility of a Condensation Test on a In-Pool Heat Exchanger of a Passive Safety System with RELAP5/MOD3

*Atsushi Ui¹, Fulvio Mascari² (1. CRIEPI, 2. ENEA)

11:35 AM - 11:50 AM

[2L09] Numerical Analysis of Oxide Layers Growth and Dissolution Rates in Flowing Lead-Bismuth Eutectic

(1) Implementation of oxide layers growth and dissolution models in ANSYS Fluent code

*Nao Watanabe¹, Kenji Nishihara¹, Hiroyuki Yoshida¹ (1. JAEA)

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

Oral presentation

[2L10-15] Gas-liquid Two Phase Flow 1

Thu. Sep 8, 2022 2:45 PM - 4:25 PM Room L (E1 Bildg.4F No.44)

Chair:Hiroto Sakashita(Hokkaido Univ.)

2:45 PM - 3:00 PM

[2L10] Evaluation of structural effect of BWR spacers on droplet deposition

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

3:00 PM - 3:15 PM

[2L11] Measurement of Bubbly Layer Void Fraction at the Point of Onset of Significant Void in Subcooled Flow Boiling

*Binh Thanh Nguyen¹, Tomio OKAWA¹, Ryoma TSUJIMURA¹ (1. UEC)

3:15 PM - 3:30 PM

[2L12] Development of Advanced Neutronics/Thermal-Hydraulics Coupling Simulation System

(6) Measurement of Gas-Liquid Two-Phase flow inside a Fuel Bundle to Obtain Code Validation Data

Kaoru Okamoto¹, *Yasushi Makino¹, Ayako Ono², Hiroyuki Yoshida² (1. NDC, 2. JAEA)

3:30 PM - 3:45 PM

[2L13] Experimental study on the breakup of liquid jet discharged from oval nozzle

*Guofu Sun¹, Yi Zhan¹, Tomio Okawa¹, Mitsuhiro Aoyagi², Akihiro Uchibori², Yasushi Okano² (1. The University of Electro-Communications, 2. Japan Atomic Energy Agency)

3:45 PM - 4:00 PM

[2L14] Flow Characteristics in a Vertical Pipe with Sharp-Edged Top and Bottom Ends under Flooding Conditions

*Toshiya Takaki¹, Michio Murase¹, Masaki Yamashita², Ryo Kurimoto², Kosuke Hayashi², Akio Tomiyama² (1. INSS, 2. Kobe Univ.)

4:00 PM - 4:15 PM

[2L15] A Study on Measures to Prevent Flashing by Laser Cavitation

*Toshihisa Tsuchida¹, Akiko Kaneko¹, Tomoomi Segawa², Kouichi Kawaguchi², Katsunori Ishii² (1. Univ. of Tsukuba, 2. Japan Atomic Energy Agency)

Time reserved for Chair （4:15 PM - 4:25 PM）

Oral presentation

[2L16-19] Gas-liquid Two Phase Flow 2

Thu. Sep 8, 2022 4:25 PM - 5:30 PM Room L (E1 Bildg.4F No.44)

Chair:Chikako Iwaki(Toshiba ESS)

4:25 PM - 4:40 PM

[2L16] Aerosol decontamination effect in small scale bubble swarm during Pool Scrubbing

*Sasuke Kadoma¹, Kiichi Kohno¹, Kota Fujiwara¹, Kohei Yoshida¹, Akiko Kaneko¹ (1. Univ. of Tsukuba)

4:40 PM - 4:55 PM

[2L17] Two-dimensional numerical simulation for experiment of wall condensation along a flat plate with GOTHIC code

*Tomonori Suzuki¹, Michio Murase¹ (1. INSS)

4:55 PM - 5:10 PM

[2L18] 3D CFD for steam-air mixture flow in a circular tube using 1D wall condensation model

*Yoichi Utanohara^1,2, Michio Murase¹ (1. INSS, 2. Komatsu University)

5:10 PM - 5:25 PM

[2L19] CHF and Liquid-Vapor Structure near Heating Surface in Subcooled Flow Boiling on a Vertical Surface

*Takashi Furuhashi¹, Hiroto Sakashita¹ (1. Hokkaido Univ.)

Time reserved for Chair （5:25 PM - 5:30 PM）

Oral presentation

[3L01-04] Fukushima NPPs Accident

Fri. Sep 9, 2022 9:30 AM - 10:35 AM Room L (E1 Bildg.4F No.44)

Chair:Hiroyuki Yoshida(JAEA)

9:30 AM - 9:45 AM

[3L01] In-Vessel Phase MAAP Analysis Based on the Latest Findings on Fukushima Daiichi Nuclear Power Station in JFY2021

(1) Overview and Unit 2 Analysis Results

*Ikken Sato Sato¹, Takuya Yamashita¹, Shinji Yoshikawa¹, Michal Cibula², Shinya Mizokami² (1. Japan Atomic Energy Agency, 2. Tokyo Electric Power Company Holdings)

9:45 AM - 10:00 AM

[3L02] In-Vessel Phase MAAP Analysis Based on the Latest Findings on Fukushima Daiichi Nuclear Power Station in the JFY 2021

(2) Unit 3 Analysis Results and Use for Future Studies

*Takuya Yamashita¹, Ikken Sato¹, Shinji Yoshikawa¹, Michal Cibula², Shinya Mizokami² (1. Japan Atomic Energy Agency, 2. Tokyo Electric Power Company Holdings, Inc.)

10:00 AM - 10:15 AM

[3L03] Fukushima Daiichi NPP Unit 2 Suppression Chamber Lower Part Leak Caused by Seismic Ground Motion

-Hypothesis examination and consequence-

*FUMIYA TANABE¹ (1. Sociotechnical Systems Safety Research Institute)

10:15 AM - 10:30 AM

[3L04] Temperature change due to oxidative cooling under the fuel rod exposure in Fukushima One No.1 Reactor

Recursive calculation of temperature using a cylinder model

*Kiyoshi Yoneyama¹, Kazuo Watanabe², Kouji Kihara³, Kouhei Kawano (1. H.O.Yoneyama, 2. WNR-Cx Watanabe Lab., 3. Tokyo Gas Co.Ltd.)

Time reserved for Chair （10:30 AM - 10:35 AM）

Oral presentation

[3L05-11] Fast Reactor Thermal Hydraulics

Fri. Sep 9, 2022 10:35 AM - 12:30 PM Room L (E1 Bildg.4F No.44)

Chair:Masaaki Tanaka(JAEA)

10:35 AM - 10:50 AM

[3L05] Evaluation of core thermal hydraulics in pool-type SFR

*Junji Endo¹, Hiroyuki Hagiwara¹, Akira Imamura¹, Tomo Imamura¹, Ezure Toshiki², Hamase Erina², Masaaki Tanaka² (1. MFBR, 2. JAEA)

10:50 AM - 11:05 AM

[3L06] Development of the integrated analysis model for the ex-vessel phenomena in the sodium-cooled fast reactor

*Mitsuhiro Aoyagi¹, Akihiro Uchibori¹, Toru Makino², Hiroshi Ohki³ (1. JAEA, 2. NESI, 3. NDD)

11:05 AM - 11:20 AM

[3L07] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(6)Model development for applicability expansion of simulation system

*Akihiro Uchibori¹, Yasushi Okano¹, Takashi Takata¹ (1. JAEA)

11:20 AM - 11:35 AM

[3L08] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(7) Development of RVACS model for application to PRISM-type reactor

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

11:35 AM - 11:50 AM

[3L09] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(8) Development of evaluation tool for user convenience

*Masateru Sonehara¹, Mitsuhiro Aoyagi¹, Wataru Kosaka¹, Akihiro Uchibori¹, Yasushi Okano¹ (1. JAEA)

11:50 AM - 12:05 PM

[3L10] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

Development of steady-state irradiation model for core melting evaluation

*Tohru Suzuki¹, Haruki Honda¹, Shuntaro Aono¹, Ken-ichi Kawada², Shinya Ishida², Yasushi Okano² (1. Tokyo City University , 2. JAEA)

12:05 PM - 12:20 PM

[3L11] Development of fundamental numerical simulation system for integrated safety evaluation in various innovative sodium-cooled fast reactor

(10) Development of measurement equipment for thermophysical properties of molten materials

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

Time reserved for Chair （12:20 PM - 12:30 PM）

Sessions

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

[2L01-04] Severe Accident

(12)Estimation of Fragmentation Amount

[2L05-09] Numerical Analysis

(2) MAAP5 Analysis for Phebus FPT0 Test

(3) Validation of Porous Model in JUPITER for Forced Convection

(1) Implementation of oxide layers growth and dissolution models in ANSYS Fluent code

[2L10-15] Gas-liquid Two Phase Flow 1

(6) Measurement of Gas-Liquid Two-Phase flow inside a Fuel Bundle to Obtain Code Validation Data

[2L16-19] Gas-liquid Two Phase Flow 2

[3L01-04] Fukushima NPPs Accident

(1) Overview and Unit 2 Analysis Results

(2) Unit 3 Analysis Results and Use for Future Studies

-Hypothesis examination and consequence-

Recursive calculation of temperature using a cylinder model

[3L05-11] Fast Reactor Thermal Hydraulics

(6)Model development for applicability expansion of simulation system

(7) Development of RVACS model for application to PRISM-type reactor

(8) Development of evaluation tool for user convenience

Development of steady-state irradiation model for core melting evaluation

(10) Development of measurement equipment for thermophysical properties of molten materials

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