Oral presentation

[1K01-07] Numerical Analysis

Tue. Mar 26, 2024 10:00 AM - 11:55 AM Room K (21Bildg.4F 21-422)

Chair:Kei Ito(Kyoto Univ.)

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10:00 AM - 10:15 AM

[1K01] Application of subchannel analysis to the evaluation of cladding temperatures during accidents

(3) Examination of the Void Drift Model

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

10:15 AM - 10:30 AM

[1K02] Development of Advanced Neutronics/Thermal-Hydraulics Coupling Simulation System

(11) MVP/JUPITER Coupling Simulation Using JAMPAN for Fuel Bundle

*Tomohiro Kamiya¹, Taku Nagatake¹, Ayako Ono¹, Kenichi Tada¹, Ryoichi Kondo¹, Yasunobu Nagaya¹, Hiroyuki Yoshida¹ (1. Japan Atomic Energy Agency)

10:30 AM - 10:45 AM

[1K03] Investigation of Accident Scenario and Fission Products Behaviors in Fukushima Daiichi Nuclear Power Plant using SAMPSON code

(4) Investigation for contamination of shield-plug in Unit-2 based on SAMPSON analysis with aerosol resuspension model

*Chiaki Kino¹, Kenichi Tezuka¹ (1. IAE)

10:45 AM - 11:00 AM

[1K04] Development of a coupling method of sodium-concrete reaction model in the integrated SFR safety analysis code SPECTRA

*Mitsuhiro Aoyagi¹, Tohru Makino², Akhiro Uchibori¹, Yasushi Okano¹ (1. JAEA, 2. NESI)

11:00 AM - 11:15 AM

[1K05] Development of droplet deposition correlation based on numerical analysis method

*Keizo Matsuura¹, Daichi Hagari² (1. FUT, 2. Osaka Univ.)

11:15 AM - 11:30 AM

[1K06] Numerical simulation of annular flow with disturbance wave

*Naoki Horiguchi¹, Huacheng Zhang², Ayako Ono¹, Hiroyuki Yoshida¹, Shoji Mori² (1. JAEA, 2. Kyushu Univ.)

11:30 AM - 11:45 AM

[1K07] Development of a Coupled Fluid-Structure Benchmark Code for the Design Tool of the Beam Window in the Accelerator-Driven System

*Susumu Yamashita¹, Nao Kondo¹, Takanori Sugawara¹, Hiroyuki Yoshida¹ (1. JAEA)

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

Oral presentation

[1K08-12] Multiphase Flow

Tue. Mar 26, 2024 2:45 PM - 4:10 PM Room K (21Bildg.4F 21-422)

Chair:Yutaro Umehara(Kyushu Univ.)

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2:45 PM - 3:00 PM

[1K08] Impact evaluation of geometric dimensioning to swirl vanes of BWR spacer on droplet deposition to fuel rod surface

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

3:00 PM - 3:15 PM

[1K09] Relationship Between Droplet Formation and Interfacial Instability of Liquid Jets Falling into Shallow Water Pool.

*Naoto Masaki¹, Akiko Kaneko¹, Naoki Horiguchi², Hiroyuki Yosida² (1. Univ. of Tsukuba, 2. JAEA)

3:15 PM - 3:30 PM

[1K10] Experiment and CFD analysis on jet diffusion behavior of solutions with different densities

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

3:30 PM - 3:45 PM

[1K11] Experimental study on the flow characteristics 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

[1K12] Development of Low Pressure Drop Separator for BWRs

(5) Separator Carry-under Evaluation Method Based on Calibration Test Results

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

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

Oral presentation

[1K13-17] Critical Heat Flux 1

Tue. Mar 26, 2024 4:10 PM - 5:30 PM Room K (21Bildg.4F 21-422)

Chair:Masahiro Furuya(Waseda Univ.)

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4:10 PM - 4:25 PM

[1K13] Modeling and experimental validation for the relation between large bubble formation and departure from nucleate boiling

*Binh Thanh Nguyen¹, Ryoma Tsujimura, Tomio Okawa (1. The University of Electro-Communication)

4:25 PM - 4:40 PM

[1K14] Development of mechanistic prediction method of DNB heat flux based on two-phase flow CFD

(1) Overview and flow boiling experiment

*Tomio Okawa¹, Thanh-Binh Nguyen¹, Ryoma Tsujimura¹ (1. UEC)

4:40 PM - 4:55 PM

[1K15] Development of mechanistic prediction method of DNB heat flux based on two-phase flow CFD

(2) Overview of high pressure pool boiling experiment

*Yutaro Umehara¹, Shota Fukudome¹, Shoji Mori¹ (1. Kyushu Univ.)

4:55 PM - 5:10 PM

[1K16] Development of mechanistic prediction method of DNB heat flux based on two-phase flow CFD

(3) Development of model for vapor mass formation under forced convective boiling

*Ayako Ono Ono¹, Tomio Okawa², Hiroyuki Yoshida¹ (1. JAEA, 2. UEC)

5:10 PM - 5:25 PM

[1K17] Development of mechanistic prediction method of DNB heat flux based on two-phase flow CFD

(4) Numerical analysis of void fraction distribution using two-phase flow CFD

*Yasuo Ose¹, Tomio Okawa² (1. YSE, 2. UEC)

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

Oral presentation

[2K01-04] Critical Heat Flux 2

Wed. Mar 27, 2024 9:45 AM - 10:50 AM Room K (21Bildg.4F 21-422)

Chair:Eiji Hoashi(Osaka Univ.)

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9:45 AM - 10:00 AM

[2K01] Effect of Internal Structure of Metal Micro Honeycomb Porous Plate and Wicking Ability on Pool Boiling Critical Heat Flux

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

10:00 AM - 10:15 AM

[2K02] Development an IVR System with Honeycomb Cooling Technology that combines CHF Improvement and Rapid Cooling of High-Temperature Bodies

(1)Overall overview and the CHF improvement by the Honeycomb Porous Plate and nanofluid

*Shoji Mori¹, Yutaro Umehara¹, Huacheng Zhang¹, Shinichiro Yasukochi¹ (1. Kyushu Univ.)

10:15 AM - 10:30 AM

[2K03] Development an IVR System with Honeycomb Cooling Technology that combines CHF Improvement and Rapid Cooling of High-Temperature Bodies

(2)Quench performance of the developed Honeycomb Porous Plate

*Huacheng Zhang¹, Shinichiro Yasukochi¹, Yutaro Umehara¹, Shoji Mori¹ (1. KYUSHU UNIVERSITY)

10:30 AM - 10:45 AM

[2K04] Development an IVR System with Honeycomb Cooling Technology that combines CHF Improvement and Rapid Cooling of High-Temperature Bodies

(3) Elucidation of Rapid Cooling Mechanism of High-Temperature Bodies by Nanofluids

*SOM ONN OUCH¹, TOMIO OKAWA¹ (1. UEC)

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

Oral presentation

[2K05-08] 1F Accident 1

Wed. Mar 27, 2024 10:50 AM - 11:55 AM Room K (21Bildg.4F 21-422)

Chair:Shota Ueda(CRIEPI)

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10:50 AM - 11:05 AM

[2K05] Research on Radioactive Aerosol Control and Decontamination at Fukushima Daiichi Nuclear Power Station Decommissioning

(1) Evaluation of aerosol scattering under laser decontamination

*Shuichiro Miwa¹, Avadhesh K Sharma¹, Ruicong Xu¹, Shunichi Suzuki¹, Atsushi Kosuge², Kohei Shibata³ (1. UTokyo, 2. JAEA, 3. ATOX)

11:05 AM - 11:20 AM

[2K06] Research on Radioactive Aerosol Control and Decontamination at Fukushima Daiichi Nuclear Power Station Decommissioning

(2) Characterization and scavenging of aerosols generated by Laser cleaning experiment

*Avadhesh Kumar Sharma¹, Ruicong XU¹, Atsushi KOSUGE², Shuichiro MIWA¹, Shunichi SUZUKI¹ (1. The University of Tokyo, 2. JAEA)

11:20 AM - 11:35 AM

[2K07] Research on Radioactive Aerosol Control and Decontamination at Fukushima Daiichi Nuclear Power Station Decommissioning

(3) Development of the electro-scavenging technique using multi-scale charged spray droplets

*Ruicong Xu¹, Avadhesh Kumar Sharma¹, Shuichiro Miwa¹, Shunichi Suzuki¹ (1. UTokyo)

11:35 AM - 11:50 AM

[2K08] Research on Radioactive Aerosol Control and Decontamination at Fukushima Daiichi Nuclear Power Station Decommissioning

(4) Summary and achievement of UK-Japan joint experiment at mock-up facility

*Kohei SHIBATA¹, Avadhesh K. SHARMA², Ruicong XU², Shuichiro MIWA², Shunichi SUZUKI², Atushi KOSUGE³, David MEGSON-SMITH⁴, Tom BENNETT⁴, Tom SCOTT⁴ (1. ATOX, 2. UTokyo, 3. JAEA, 4. University of Bristol)

Time reserved for Chair （11:50 AM - 11:55 AM）

Oral presentation

[2K09-11] Advanced Reactor

Wed. Mar 27, 2024 2:45 PM - 3:40 PM Room K (21Bildg.4F 21-422)

Chair:Shinichiro Uesawa(JAEA)

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2:45 PM - 3:00 PM

[2K09] Study on coolant behavior in damaged core of sodium-cooled fast reactor

(10) Evaluation of interfacial drag and observation of two-phase flow regime under negligibly small liquid flow rate condition

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

3:00 PM - 3:15 PM

[2K10] Confirmation of applicability of gas entrainment evaluation model considering pressure distribution along vortex center line for water experiment in rectangular flow channel involving advective vortices

*Kentaro Matsushita¹, Toshiki Ezure¹, Yasutomo Imai², Tatsuya Fujisaki², Masaaki Tanaka¹ (1. JAEA, 2. NDD)

3:15 PM - 3:30 PM

[2K11] Development of offshore floating nuclear power

(7)Visual observation of void behavior in forced convection subcooled boiling under simulated floating body oscillations

*Yutaka Ikeda¹, Shota Ueda¹, Takahiro Arai¹, Riichiro Okawa¹, Kenetsu Shirakawa¹, Masahiro Furuya¹, Atsushi Ui¹ (1. CRIEPI)

Time reserved for Chair （3:30 PM - 3:40 PM）

Oral presentation

[2K12-19] Severe Accident

Wed. Mar 27, 2024 3:40 PM - 5:50 PM Room K (21Bildg.4F 21-422)

Chair:Hiroyuki Yoshida(JAEA)

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3:40 PM - 3:55 PM

[2K12] Evaluation on Reactor Core Degradation and Relocation at Severe Accident

(4) MAAP5 Analysis of LOFT Experiment LP-FP-2

*Koji Nishida¹, Naoki Sano¹, Seitaro Sakurai¹, Michio Murase¹ (1. INSS)

3:55 PM - 4:10 PM

[2K13] Effect of melt composition and water temperature on molten droplet oxidation of zirconium mixed with stainless-steel in water

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

4:10 PM - 4:25 PM

[2K14] Development of Numerical Simulation Method to Evaluate Heat Transfer of Fuel Debris in Air Cooling

(6) Effect of Effective Thermal Conductivity Model in Analysis of Thermal Behavior in PCV

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

4:25 PM - 4:40 PM

[2K15] Effect of particle diameters on void fraction distribution in particle bed

*Shota Ueda¹, Takahiro Arai¹, Riichiro Okawa¹, Masahiro Furuya¹ (1. CRIEPI)

4:40 PM - 4:55 PM

[2K16] Hydrophilicity Dependency on Debris Bed Coolability

*Tatsuya Kano¹, Masahiro Furuya¹ (1. Waseda Univ.)

4:55 PM - 5:10 PM

[2K17] Basic study on particle size distributions

*Taizo Kanai¹ (1. CRIEPI)

5:10 PM - 5:25 PM

[2K18] Effects of aerosols in a single bubble on rising behavior and shape change in pool scrubbing

*Kiichi Kohno¹, Sasuke Kadoma¹, Akiko Kaneko¹ (1. University of Tsukuba)

5:25 PM - 5:40 PM

[2K19] Experimental study on external cooling of containment vessel with CIGMA facility

*Shu Soma¹, Satoshi Abe¹, Yasuteru Sibamoto¹ (1. JAEA)

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

Oral presentation

[3K01-09] 1F Accident 2

Thu. Mar 28, 2024 9:30 AM - 11:55 AM Room K (21Bildg.4F 21-422)

Chair:Riichiro Okawa(CRIEPI)

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9:30 AM - 9:45 AM

[3K01] Estimation of RPV damage and fuel debris relocation behavior in the PCV at Fukushima Daiichi Nuclear Power Station

(1)Development of 3D estimation diagrams and the debrisEye

*Takuya Yamashita¹, Kenta Shimomura¹, Eiichi Nagai², Tomohiro Yasumatsu³, Shinya Mizokami^4,1 (1. JAEA, 2. Prometech Software, 3. NDD, 4. TEPCO HD)

9:45 AM - 10:00 AM

[3K02] Estimation of RPV damage and fuel debris relocation behavior in the PCV at Fukushima Daiichi Nuclear Power Station

(2)Fukushima Daiichi Nuclear Power Plant unit2 evaluation of containment behavior under the severe accident condition

*Shinya Mizokami^1,3, Yuki Nakamura², Yoshihiro Kojima², Kenta Shimomura¹, Takuya Yamashita¹ (1. JAEA, 2. TOSHIBA ESS, 3. TEPCO HD)

10:00 AM - 10:15 AM

[3K03] Estimation of RPV damage and fuel debris relocation behavior in the PCV at Fukushima Daiichi Nuclear Power Station

(3)Fukushima Daiichi Nuclear Power Plant unit3 evaluation of containment behavior under the severe accident condition

*Yuki Nakamura¹, Yoshihiro Kojima¹, Takuya Yamashita², Kenta Shimomura², Shinya Mizokami^2,3 (1. TOSHIBA ESS, 2. JAEA, 3. TEPCO HD)

10:15 AM - 10:30 AM

[3K04] Estimation of RPV damage and fuel debris relocation behavior in the PCV at Fukushima Daiichi Nuclear Power Station

(4)RPV lower head penetration failure test due to eutectic reaction (ELSA-3)

*Kenta Shimomura¹, Takuya Yamashita¹, Yuji Nagae¹ (1. JAEA)

10:30 AM - 10:45 AM

[3K05] Estimation of RPV damage and fuel debris relocation behavior in the PCV at Fukushima Daiichi Nuclear Power Station

(5)Evaluation of temperature behavior of CRD Housing of Unit 2 during accident progress

*Kazuaki Sakae¹, Akihiko Hashimoto¹, Takuya Yamashita², Kenta Shimomura² (1. NDD, 2. JAEA)

10:45 AM - 11:00 AM

[3K06] Estimation of RPV damage and fuel debris relocation behavior in the PCV at Fukushima Daiichi Nuclear Power Station

(6)Evaluation of the core material relocation behavior

*Akifumi Yamaji¹, Ikken Sato¹, Xin Li², Takeshi Yamada¹, Takuya Yamashita² (1. Waseda Univ., 2. JAEA)

11:00 AM - 11:15 AM

[3K07] Estimation of RPV damage and fuel debris relocation behavior in the PCV at Fukushima Daiichi Nuclear Power Station

(7)Clarification of boundary conditions for evaluation of the core material relocation behavior

*Ikken Sato¹, Akifumi Yamaji¹, Xin Li², Takuya Yamashita yamashita² (1. Waseda University, 2. Japan Atomic Energy Agency)

11:15 AM - 11:30 AM

[3K08] Estimation of RPV damage and fuel debris relocation behavior in the PCV at Fukushima Daiichi Nuclear Power Station

(8)Numerical simulation of core material relocation behavior in the RPV lower head region

*Xin Li¹, Akifumi Yamaji², Ikken Sato², Takuya Yamashita¹ (1. JAEA, 2. Waseda Univ.)

11:30 AM - 11:45 AM

[3K09] Estimation of RPV damage and fuel debris relocation behavior in the PCV at Fukushima Daiichi Nuclear Power Station

(9)Improvement of the crust model in the MPS method and analysis of MCCI experiments

*Takeshi Yamada¹, Xin Li², Ikkn Sato¹, Takuya Yamasita², Akifumi Yamaji¹ (1. Waseda University, 2. JAEA)

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

Oral presentation

[3K10-12] Condensation Heat Transfer

Thu. Mar 28, 2024 2:45 PM - 3:40 PM Room K (21Bildg.4F 21-422)

Chair:Ayako Ono(JAEA)

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2:45 PM - 3:00 PM

[3K10] Evaluation of Condensation Heat Fluxes with Mixed Convection on a Vertical Plat Plate

*Toshiya Takaki¹, Michio Murase¹, Yoichi Utanohara² (1. INSS, 2. KOMATSU Univ.)

3:00 PM - 3:15 PM

[3K11] Analyses for experiments of condensation heat transfer from steam-air mixture on vertical flat plates

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

3:15 PM - 3:30 PM

[3K12] Correlation for condensation heat flux with natural convection from steam-air mixture on a vertical flat plate

*Michio Murase¹, Toshiya Takaki¹ (1. INSS)

Time reserved for Chair （3:30 PM - 3:40 PM）

Sessions

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

[1K01-07] Numerical Analysis

(3) Examination of the Void Drift Model

(11) MVP/JUPITER Coupling Simulation Using JAMPAN for Fuel Bundle

(4) Investigation for contamination of shield-plug in Unit-2 based on SAMPSON analysis with aerosol resuspension model

[1K08-12] Multiphase Flow

(5) Separator Carry-under Evaluation Method Based on Calibration Test Results

[1K13-17] Critical Heat Flux 1

(1) Overview and flow boiling experiment

(2) Overview of high pressure pool boiling experiment

(3) Development of model for vapor mass formation under forced convective boiling

(4) Numerical analysis of void fraction distribution using two-phase flow CFD

[2K01-04] Critical Heat Flux 2

(1)Overall overview and the CHF improvement by the Honeycomb Porous Plate and nanofluid

(2)Quench performance of the developed Honeycomb Porous Plate

(3) Elucidation of Rapid Cooling Mechanism of High-Temperature Bodies by Nanofluids

[2K05-08] 1F Accident 1

(1) Evaluation of aerosol scattering under laser decontamination

(2) Characterization and scavenging of aerosols generated by Laser cleaning experiment

(3) Development of the electro-scavenging technique using multi-scale charged spray droplets

(4) Summary and achievement of UK-Japan joint experiment at mock-up facility

[2K09-11] Advanced Reactor

(10) Evaluation of interfacial drag and observation of two-phase flow regime under negligibly small liquid flow rate condition

(7)Visual observation of void behavior in forced convection subcooled boiling under simulated floating body oscillations

[2K12-19] Severe Accident

(4) MAAP5 Analysis of LOFT Experiment LP-FP-2

(6) Effect of Effective Thermal Conductivity Model in Analysis of Thermal Behavior in PCV

[3K01-09] 1F Accident 2

(1)Development of 3D estimation diagrams and the debrisEye

(2)Fukushima Daiichi Nuclear Power Plant unit2 evaluation of containment behavior under the severe accident condition

(3)Fukushima Daiichi Nuclear Power Plant unit3 evaluation of containment behavior under the severe accident condition

(4)RPV lower head penetration failure test due to eutectic reaction (ELSA-3)

(5)Evaluation of temperature behavior of CRD Housing of Unit 2 during accident progress

(6)Evaluation of the core material relocation behavior

(7)Clarification of boundary conditions for evaluation of the core material relocation behavior

(8)Numerical simulation of core material relocation behavior in the RPV lower head region

(9)Improvement of the crust model in the MPS method and analysis of MCCI experiments

[3K10-12] Condensation Heat Transfer

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