Self-Leveling Onset Criteria in Debris Beds
スポンサーリンク
概要
- 論文の詳細を見る
In a core-disruptive accident of a sodium-cooled fast breeder reactor, core debris may settle on the core-support structure and/or in the lower inlet plenum of the reactor vessel because of rapid quenching and fragmentation of molten core materials in the subcooled sodium plenum. Coolant boiling is the mechanism driving the self-leveling of a debris bed that causes significant changes in the heat-removal capability of the beds. In the present study, we develop criteria establishing the onset of this self-leveling behavior that we base on a force balance model assuming a debris bed with a single-sized spherical particle. The model considers drag, buoyancy, and gravity acting on each particle. A series of experiments with simulant materials verified the applicability of this description of self-leveling. Particle size (between 0.5–6 mm), shape (spherical and nonspherical), density (namely of alumina, zirconia, lead, and stainless steel), along with boiling intensity, bed volume, and even experimental methods were taken into consideration to obtain general characteristics of the self-leveling process. We decided to use depressurization boiling to simulate an axially increasing void distribution in the debris bed, although bottom heating was also used to validate the use of the depressurization method. On the self-leveling onset issues, we obtained good agreement between model predictions and experimental results. Extrapolation of our model to actual reactor conditions is discussed.
- 2010-04-01
著者
-
MORITA Koji
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
-
MATSUMOTO Tatsuya
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
-
FUKUDA Kenji
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
-
ZHANG Bin
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
-
HARADA Tetsushi
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
-
HIRAHARA Daisuke
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
-
YAMANO Hidemasa
Advanced Nuclear System R&D Directorate, Japan Atomic Energy Agency
-
SUZUKI Tohru
Advanced Nuclear System R&D Directorate, Japan Atomic Energy Agency
-
TOBITA Yoshiharu
Advanced Nuclear System R&D Directorate, Japan Atomic Energy Agency
-
Zhang Bin
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
-
Fukuda K
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
-
Morita Koji
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
-
Fukuda Kenji
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
-
Tobita Yoshiharu
Advanced Nuclear System R&d Directorate Japan Atomic Energy Agency
-
MORITA Koji
National Institute for Materials Science
-
Harada Tetsushi
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
-
Yamano Hidemasa
Advanced Nuclear System R&d Directorate Japan Atomic Energy Agency
-
Hirahara Daisuke
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
-
Matsumoto Tatsuya
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
-
Fukuda Kenji
Department Of Applied Chemistry Faculty Of Science And Engineering Kinki University
-
Morita Koji
Institute Of Environmental Systems Faculty Of Engineering Kyushu University
-
Suzuki Tohru
Advanced Nuclear System R&d Directorate Japan Atomic Energy Agency
-
Morita Koji
Department Of Anesthesiology And Intensive Care Hamamatsu University School Of Medicine
-
Morita Koji
Department Of Materials Science And Technology Graduate School Of Engineering Sciences Kyushu Univer
-
Fukuda Kenji
Department Of Animal And Food Hygiene Obihiro University Of Agriculture And Veterinary Medicine
-
SUZUKI Tohru
Advanced Materials Processing Unit, National Institute for Materials Science
-
SUZUKI Tohru
Advanced Fast Reactor Cycle System Research and Development Center, Japan Atomic Energy Agency
-
TOBITA Yoshiharu
Advanced Fast Reactor Cycle System Research and Development Center, Japan Atomic Energy Agency
-
YAMANO Hidemasa
Advanced Fast Reactor Cycle System Research and Development Center, Japan Atomic Energy Agency
-
Morita Koji
Department of Advanced Prosthodontics, Division of Cervico-Gnathostomatology, Programs for Applied Biomedicine, Hiroshima University Graduate School of Biomedical Sciences
関連論文
- Simulation of Molten Metal Penetration and Freezing Behavior in a Seven-Pin Bundle Experiment
- Self-Leveling Onset Criteria in Debris Beds
- Experimental Analyses by SIMMER-III on Debris-Bed Coolability and Metallic Fuel Freezing Behavior
- The Effect of Bubble Size on the Radial Distribution of Void Fraction in Two-Phase Flow in a Circular Tube
- Assessment of myocardial viability in patients with myocardial infarction using twenty-four hour thallium-201 late redistribution imaging
- DP-015-4 Role of JA in ablation therapy for experimental rat breast cancer
- Fracture Toughness of Yttria-Stabilized Cubic Zirconia (8Y-CSZ) Doped with Pure Silica
- Effect of MgAl_2O_4 Spinel Dispersion on High-Strain-Rate Superplasticity in Tetragonal ZrO_2 Polycrystal
- Simulation of the Rayleigh-Taylor Instability with the MPS Method
- Simulation of the Dynamic Behavior of the Solid Particle Bed in a Liquid Pool : Sensitivity of the Particle Jamming and Particle Viscosity Models
- Artificial Neural Network Modeling of Bird Behavior and Reactions to Environmental Parameters in Wajiro Tidal Flat Reclamations
- Evaluation of Cooling Capability in a Heated Narrow Flow Passage
- A Theoretical Model of Annular Upward Flow in a Vertical Annulus Gap
- ICONE11-36279 INVESTIGATION INTO COOLABILITY BY TWO-PHASE FLOW IN NARROW FLOW PASSAGES
- An Analytical Method of Constructing Best-mixed Power Generation Systems Reflecting Public Preference
- Applications of Artificial Neural Network for the Prediction of Flow Boiling Curves
- Thermophysical Properties of Lead-Bismuth Eutectic Alloy in Reactor Safety Analyses
- Free Jejunal Graft Reconstruction After Resection of Neck Cancers : Our Surgical Technique
- Recent Results of Therapy for Scirrhous Gastric Cancer
- Application of an Artificial Neural Network in Reactor Thermohydraulic Problem : Prediction of Critical Heat Flux
- A Two-Dimensional Numerical Analysis of Two-Phase Flows under Natural Circulation Conditions Using Drift-Flux Model
- Numerical Simulation of Rheological Behavior in Melting Metal Using Finite Volume Particle Method
- Solid Synthesis of Cs_xH_PW_O_ Salts and Their Catalytic Activity for the Isomerization of n-Butane
- Linear Stability Analysis on Instabilities of In-phase and Out-of-phase Modes in Boiling Water Reactors
- Experimental Study on the Geysering Mechanism in a Closed Two-phase Thermosyphon
- Interaction of Arenastatin A with Porcine Brain Tubulin
- Pressure Fluctuation Characteristics of the Short-Radius Elbow Pipe for FBR in the Postcritical Reynolds Regime
- Kinetics of Normal Grain Growth Depending on the Size Distribution of Small Grains
- Reactions of Amino Acid Esters with Nucleophiles Catalyzed by Polymer-Supported Amine-Metal Complexes
- Ectomycorrhizae and ectomycorrhizal fungal fruit bodies in pine stands differentially damaged by pine wilt disease
- Simulation of Three-dimensional Convection Patterns in a Rayleigh-Benard System Using the MPS Method
- Preparation, Structures, and Properties of New Monocarbenium Ion Compounds Stabilized by a 3-Guaiazulenyl Group and an Azobenzene Unit : Comparative Studies on Three Delocalized π-Electron Systems
- Safety Design Requirements for Safety Systems and Components of JSFR
- Preparation and Structures of New Azobenzene Derivatives with a 3-Guaiazulenylvinyl Group
- A Consideration on Relations between Exergy and Economics
- Theoretical Study on Density Wave Oscillation of Two-Phase Natural Circulation under Low Quality Conditions
- Dynamic Behavior of a Solid Particle Bed in a Water Pool
- Numerical Analysis of Long Range Acoustic Propagation Based on Wide Angle Parabolic Wave Equation
- Evaluation of a Pylorus-Preserving Gastrectomy for Patients Preoperatively Diagnosed with Early Gastric Cancer Located in the Middle Third of the Stomach
- Magnetic Field Effect on CDW in NbSe_3 and Pristine Tetratellurides : II. LOW TEMPERATURE PROPERTIES OF SOLIDS : Charge Density Waves
- Sound Propagation Characteristics in Sound Fixing and Ranging Channel across Geostrophic Current
- Effectiveness of fosfomycin combined with other antimicrobial agents against multidrug-resistant Pseudomonas aeruginosa isolates using the efficacy time index assay
- Geometric Structures of Grain Boundaries Expected from the O-Lattice Theory Compared with High-Resolution Transmission Electron Microscope Images
- Parton Cascade Event Generators and the Story of ET
- Estrogen Deficiency Leads to Impaired Osteogenic Differentiation of Periodontal Ligament Stem Cells in Rats
- Initial bone regeneration around fenestrated implants in Beagle dogs using basic fibroblast growth factor-gelatin hydrogel complex with varying biodegradation rates
- Experimental Studies and Empirical Models for the Transient Self-Leveling Behavior in Debris Bed
- Amsorb Plus and Dragersorb Free, two new-generation carbon dioxide absorbents that produce a low compound A concentration while providing sufficient CO_2 absorption capacity in simulated sevoflurane anesthesia
- Safety Design Requirements for Safety Systems and Components of JSFR
- Particle Effects on Penetration and Solidification of Flowing Mixed Melts on Metal Structures
- Particle Effects on Penetration and Solidification of Flowing Mixed Melts on Metal Structures
- Effective rainfall seasons for interannual variation in δ^C and tree-ring width in early and late wood of Chinese pine and black locust on the Loess Plateau, China
- Experimental Study on Freezing Behavior of Molten Metal on Structure
- Experimental Studies and Empirical Models for the Transient Self-Leveling Behavior in Debris Bed
- 3D Simulation of Solid-Melt Mixture Flow with Melt Solidification Using a Finite Volume Particle Method
- Changes in the bovine whey proteome during the early lactation period
- Room-temperature Fast Synthesis of Composition-adjustable Pt-Pd Alloy Sub-10-nm Nanoparticle Networks with Improved Electrocatalytic Activities
- Fabrication of the oriented LiCoO2 sheet using a strong magnetic field
- Cloning, Monoclonal Antibody Production, and Bodily Distribution Pattern of a Bovine Lipocalin
- Cloning, Monoclonal Antibody Production, and Bodily Distribution Pattern of a Bovine Lipocalin
- Changes in the Physicochemical and Volatile Flavor Characteristics of Scomberomorus niphonius during Chilled and Frozen Storage
- Changes in the Physicochemical and Volatile Flavor Characteristics of Scomberomorus niphonius during Chilled and Frozen Storage
- High-pressure spark plasma sintering of MgO-doped transparent alumina
- Effect of Swirl Inflow on Flow Pattern and Pressure Fluctuation onto a Single-Elbow Pipe in Japan Sodium-Cooled Fast Reactor
- Evaluation of Domain Boundary of Piezo/Ferroelectric Material by Ultrasonic Atomic Force Microscopy
- Tasuki Clipping Combined With High Flow Bypass for Ruptured, Previously Coiled, Partially Thrombosed Giant Aneurysm at the Carotid Bifurcation:—Case Report—
- Pregnancy and Delivery Management in Patients With Cerebral Arteriovenous Malformation: A Single-Center Experience
- Isolation of Potential Probiotic Lactobacillus rhamnosus Strains from Traditional Fermented Mare Milk Produced in Sumbawa Island of Indonesia
- Respiratory Variation of Vertebral Arterial Flow in a Patient Scheduled for Coronary Artery Bypass Graft Surgery:– Lesson From Atypical Subclavian Steal Phenomenon –
- Risk Factors for Breast Cancer Among Chinese Women: A 10-Year Nationwide Multicenter Cross-Sectional Study
- Optimization of a Tip with Carbon Nanofibers for Improved Field Emission Properties
- Improvement of Basic Fluid Dynamics Models for the COMPASS Code
- Development of a Computational Framework on Fluid-Solid Mixture Flow Simulations for the COMPASS Code
- Processing and Performance of Electric Double-Layer Capacitors with Block-Type Carbon Nanotube Electrodes
- Expression of the SART3 Antigens in Oral Cancers.
- Tasuki Clipping Combined With High Flow Bypass for Ruptured, Previously Coiled, Partially Thrombosed Giant Aneurysm at the Carotid Bifurcation -Case Report-
- Experimental study and empirical model development for self-leveling behavior of debris bed using gas-injection
- Numerical simulation of a self-leveling experiment using a hybrid method
- Large Blood Pressure Variability Aggravates Arteriolosclerosis and Cortical Sclerotic Changes in the Kidney in Hypertensive Rats
- Pregnancy and Delivery Management in Patients With Cerebral Arteriovenous Malformation : A Single-Center Experience
- Comparative evaluation of bone regeneration using spherical and irregularly shaped granules of interconnected porous hydroxylapatite. A beagle dog study
- Respiratory Variation of Vertebral Arterial Flow in a Patient Scheduled for Coronary Artery Bypass Graft Surgery : Lesson From Atypical Subclavian Steal Phenomenon