Determination of Size of Representative Volume Element for Coke Using Homogenization Method Based on Digital Image of Actual Microstructure
スポンサーリンク
概要
- 論文の詳細を見る
When the homogenization method based on the digital image of actual microstructure is used to analyze the strength of coke, the representative volume element (RVE) is a crucial input to predict reliable results. The shape of RVE was identified as square, due to the two-dimensional numerical analysis with the research object being a section image of a coke sample was studied. The variation of multi-scale mechanical properties of coke according to a large number of unit cells with various scales was investigated to determine the proper RVE size. The resolution of calculation equaling original resolution was considered as Case 1. The other low resolution of calculation was considered as Case 2. The results showed that, in the macro-scale (homogenization) analysis, the proper size of RVE on coke's sample should be chosen larger than 874.8 μm, due to the mean calculated homogenized Young's modulus was almost constant in the case of unit cell larger than 874.8 μm. In the micro-scale (localization) analysis, in Case 1, unit cell of a large scale was prone to stress concentration which happened at the relative thin parts of structure around large pores. In Case 2, it was considered that high resolution was necessary, because low resolution changed the structural characteristic. Finally, the optimum size of RVE on coke's sample was determined as 2624.4 μm, which could represent the structural relativity of the research object.
著者
-
Miura Takatoshi
Department Of Biochemistry And Engineering Tohoku University
-
Shoji Masakazu
Department Of Chemical Engineering Tohoku University
-
Saito Yasuhiro
Department Of Applied Physics Osaka University
-
Aoki Hideyuki
Department Of Applied Microbial Technology Kumamoto Institute Of Technology
-
HIRAKI Kenichi
Department of Chemical Engineering, Graduate School of Engineering, Tohoku University
-
ZHANG Xiaoqing
Department of Chemical Engineering, Graduate School of Engineering, Tohoku University
-
YAMAZAKI Yoshiaki
Department of Chemical Engineering, Graduate School of Engineering, Tohoku University
-
KANAI Tetsuya
Department of Chemical Engineering, Graduate School of Engineering, Tohoku University
-
UCHIDA Ataru
Department of Chemical Engineering, Graduate School of Engineering, Tohoku University
関連論文
- Improvement of Pressure-Velocity Coupling Method Based on SIMPLER Algorithm
- TED-AJ03-145 NUMERICAL ANALYSIS OF ABSORBING AND DESORBING MECHANISM FOR THE METAL HYDRIDE BY HOMOGENIZATION METHOD
- Effects of Thermophysical Properties of Packed Coal Bed on Coking Behavior in Oven Chamber
- Effect of Raw-Fuel Flow Rate on Soot Formation Reaction in Carbon Black Furnace
- Equilibrium of dissolving species in aqueous H_2SiF_6 solution during the liquid phase deposition reaction(Aqueous Solution Science for Ceramic Processing II)
- Brain perfusion SPECT in neuro-Behcet's disease: Discordance between Tc-99m-HMPAO and Tc-99m-ECD
- Unstable Cavitation Behavior in a Circular-Cylindrical Orifice Flow
- Hole Dynamics in the Orthogonal-Dimer Spin System (Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- Hole-Doping Effects on a Two-Dimensional Kondo Insulator (Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
- Hole-Doping Effects on a Two-Dimensional Kondo Insulator
- An Experimental Investigation of the Characteristics of the Secondary Atomization and Spray Combustion for Emulsified Fuel
- Numerical Investigation of Waste Plastic Injection in a Blast Furnace
- A Reducing Method of a Detailed Reaction Mechanism Based on the QSSA Method
- Infective Endocarditis and Acute Purulent Pericarditis in a Patient with Hyperglycemia
- Decreased Left Atrial Appendage Flow Velocity With Atrial Fibrillation Caused by Negative Inotropic Agents
- Does Coronary Flow Velocity Reserve Reflect the Residual Viability in Patients With Old Myocardial Infarction? : Transthoracic Doppler Echocardiographic study
- Purification and Characterization of a Prolyl Endopeptidase from Pseudomonas sp. KU-22
- A Numerical Investigation of the Factors Influencing the Aggregate Shape of Carbon Black from the Furnace Process
- Three-Dimensional Spray Combustion Simulation in a Practical Boiler
- Heterogeneous Nucleation of Supercooled Water and Analysis of Ice Dendrite Growth Mechanism
- A Numerical Study on the Combustion of a Low Temperature-carbonized Semi-coke Particle
- Temperature Dependence of Refractive Index of Films of Well-defined Linear and Star-shaped Polystyrenes
- Detailed Morphology of Rubbed Alignment Layers and Surface Anchoring of Liquid Crystals
- Pulse Dispersion due to Atrial Fibrillation Causes Arterial Thrombosis in a Rabbit Experimental Model
- Performance Assessment of Phased-Array Coil in Breast MR Imaging
- Liquid Atomization Using a Rotary Bell Cup Atomizer : (Influence of Flow Characteristics of Liquid on Breakup Pattern)
- The Effect of Changes in Microscopic Structures on Coke Strength in Carbonization Process
- Research on Combustion Characteristics of Gas Turbine Combustor(Letters from R&D Groups)
- Possible Modulation of the Amygdala on Metaplasticity Deficits in the Hippocampal CA1 Field in Early Postnatally Stressed Rats
- Possible Modulation of the Amygdala on Metaplasticity Deficits in the Hippocampal CA1 Field in Early Postnatally Stressed Rats
- Determination of Size of Representative Volume Element for Coke Using Homogenization Method Based on Digital Image of Actual Microstructure
- Quantification of the Existence Ratio of Non-Adhesion Grain Boundaries and Factors Governing the Strength of Coke Containing Low-Quality Coal
- Determination of Size of Representative Volume Element for Coke Using Homogenization Method Based on Digital Image of Actual Microstructure
- Synaptic Modulation via Basolateral Amygdala on the Rat Hippocampus Medial–Prefrontal Cortex Pathway in Fear Extinction
- The Effect of Metallic Iron Particle on Coke-Matrix after Coke CO2 Gasification Reaction
- An Estimation of Thermal Stress within the Coal Briquette during Carbonization.
- Quantitative Evaluation for Relationship between Development of Pore Structure and Swelling of Coal in Carbonization of Single Coal Particle
- Simulation of Transport Phenomena around the Raceway Zone in the Blast Furnace with and without Pulverized Coal Injection.
- Down-regulated expression of family with sequence similarity 3, member B (FAM3B), in oral squamous cell carcinoma