Numerical solution of two-dimensional axisymmetric free convection within isotope separating thermal diffusion column.
スポンサーリンク
概要
- 論文の詳細を見る
A numerical method for integrating the equations of change without the Boussinesque approximation is presented for axisymmetric free convection within thermal diffusion column. A finite difference analogue of equations of change in terms of primitive variables (density, radial and axial velocities, and temperature) is solved by a modified Newton method. Errors in a finite difference approximation of derivatives for temperature and density are reduced by introduction of a perturbation or deviation from an analytically obtainable base temperature distribution. Roundoff errors in a Gaussian elimination procedure are also reduced with the adoption of "scaling" and a partial pivoting strategy of the Jacobian matrix. A relation for total mass conservation is used to prevent the density from converging to a trivial solution, i.e. zero. <BR>The method has been applied to a total reflux flow of Ar gas within the 1, 000 mm height thermal diffusion column with an inner hot radius of 0.2 mm and an outer cold radius of 5 mm, between which the temperature differs by 50-400 K. The "end effect" appears within 15 mm portion from the top and bottom plates.
- 一般社団法人 日本原子力学会の論文
著者
-
Kanagawa Akira
Department Of Nuclear Engineering Faculty Of Engineering Nagoya University
-
Yamamoto Ichiro
Department Of Chemistry Graduate School Of Science The University Of Tokyo
-
KANOH Kyoji
Department of Nuclear Engineering, Faculty of Engineering, Nagoya University
関連論文
- LYSOSOMAL ENZYMES IN HELA CELLS
- Numerical Analyses of Isotopic Concentration Profiles in Displacement Chromatography for Lithium Isotope Separetion
- Effect of Flow Rate on Height Equivalent to a Theoretical Plate for Lithium Isotope Separation with Displacement Chromatography
- Selective Extraction of Uranium from a Mixture of Metal or Metal Oxides by a Tri-n-butylphosphate Complex with HNO_3 and H_2O in Supercritical CO_2
- Extractability of Metals in Municipal Solid Wastes Fly Ash Using Supercritical CO_2 Containing Cyanex 302
- Decontamination of Radioactive Contaminants from Iron Pipes using Reactive Microemulsion of Organic Acid in Supercritical Carbon Dioxide
- Generation of Nitrous Acid by Ultrasound Irradiation in the Organic Solution Consisting of Tri-n-butylphosphate, Nitric Acid and Water
- Isotope Separation of H_2-HD Gas Mixture with "Cryogenic-Wall" Thermal Diffusion Column with a Heated Tube
- Dissolution Behavior of Uranium Oxides with Supercritical CO_2 Using HNO_3-TBP Complex as a Reactant
- Isotopic Approximations to Thermal Diffusion Factor and Ordinary Diffusion Coefficient in a Mixture of More than 4 Components
- New Method for the Removal of Uranium from Solid Wastes with Supercritical CO_2 Medium Containing HNO_3-TBP Complex
- Estimation of Hot Wire Temperature of Thermal Diffusion Column by the Pressure Change after Turning on Electricity
- Effect of Cold Wall Temperature of Thermal Diffusion Column on ^N^N-^N_2 Isotope Separation
- Thermal Diffusion Factor for Diatomic Gas Mixture in Multicomponent System
- Separative Analyses of Packed Water Distillation Column with Channeling Stage Model
- Inverse Power Series Fittings of Temperature Dependence of Thermal Diffusion Factors between Two Components of Hydrogen Isotope Molecules
- Isotopic Approximation to Thermal Diffusion Coefficients in Multi-component Mixture
- Explicit Approximation to Thermal Diffusion Factor in Isotopic 3-component Mixture
- Electrochemical Studies on Uranium in Presence of Organic Acids
- Sorption of Eu(III) on Pseudomonas fluorescens in the Presence of Citric Acid
- Primary Non-Hodgkin's Lymphoma of the Breast: A Report of Two Cases
- Fully Self-Aligned Organic Electroluminescent Devices with Dual Sidewall Structures
- Solvent Extraction of Lanthanides from Their Oxides with TBP in Supercritical Carbon Dioxide
- Malignant Adenomyoepithelioma of the Breast: A Case with Distant Metastases
- E.C.G. Findings and Pathoanatomical Findings of the Heart
- Nitrogen Isotope Separation with Displacement Chromatography Using Cryptand Polymer
- Distribution Coefficient Correlations for Nitric Acid, U (VI) and Pu (IV) in Two-Phase System with Aqueous Nitric Acid and 30% Tri-n-Buthylphosphate Solutions
- Lysosomal Enzymes in HeLa Cells
- Diffusion Coefficients in 4-component Mixture Expressed Explicitly in Terms of Binary Diffusion Coefficients and Mole Fractions
- Effect of Operational Pressure on Periodic Oscillation of Secondary Circulation near the Bottom of the Thermal Diffusion Column
- Numerical Analysis of Dynamic Behavior at Start-up of the Thermal Diffusion Column for Hydrogen Isotope Separation
- Simultaneous Solution of Concentration Profiles in Vapor-liquid Phases of Wetted-wall Distillation Column for H_20-HTO Isotope Separation
- Numerical Solution of Argon 36-38-40 Concentration Profiles within Thermal Diffusion Column
- Measurement of Isotopic Abundance Ratio of Argon-36, -38 and -40 by General-Purpose Double-Focused Mass Spectrometer
- Optimum Feed Point for Isotope Separating Thermal Diffusion Column
- Thermal Diffusion Coefficient in Multi-component Mixture Expressed in Terms of Binary Thermal Diffusion Factors and Binary Diffusion Coefficients
- Comparison of Expressions of Thermal Diffusion Phenomena in Multi-component Mixture
- Isotopic Approximation to Ordinary Diffusion Coefficients in Multi-component Mixture
- Extraspinal ependymoma of the broad ligament
- Establishment and Characterization of Transplantable Tumor Derived from a Spontaneous Malignant Fibrous Histiocytoma in the Mouse
- A Solution of a Material Balance Equation of Channeling Stage Model for a Simple Case of a Water Distillation Column
- Effects of Partition Wall within Packings on Separative Performances of Water Distillation for H_2O-HTO Isotope Separation
- Effect of Inner Radius of Wetted-wall Column on Separative Performance of H_2O-HTO Water Distillation
- Diels-Alder Reaction of 3-Metylthiofuran and Transformation of the Cycloadducts to Substituted Cyclohexenols
- Relationship between adipose maturity and fatty acid composition in various adipose tissues of Japanese Black, Holstein and Crossbred (F1) steers
- Meaning of functions representing separative power.
- Primary pulmonary Ewing's sarcoma : report of a case
- Value function and separative power for asymmetric separation process.
- Effect of reflux in uranium enriching cascade.
- Separative power of 2-up 1-down ideal cascades.
- Measurement of Isotopic Abundance Ratio of Argon-36, -38 and -40 by General-Purpose Double-Focused Mass Spectrometer.
- Simple Formulae for Analyzing Matched Abundance Ratio Cascade with Constant Separation
- Numerical solution of two-dimensional axisymmetric free convection within isotope separating thermal diffusion column.
- Variable stage-number model for simulating batch operation of water distillation column for tritium isotope separation.
- Numerical calculation of concentration profiles within thermal diffusion column with continuous feed and draw-offs.
- Separative power of ideal cascade with variable separation factors.
- Preliminary experiments of separation of tritium isotope by distillation of water.
- Resolution of inconsistencies of separative power for asymmetric process. Separative power with respect to desired and undesired materials.:Separative Power with Respect to Desired and Undesired Materials
- Numerical analysis of laminar free convection in square cavity containing heat generating Kr-85 gas.
- Reference mean temperature for evaluation of performance of thermal diffusion column for isotope separation.
- Measurement of separative characteristics of thermal diffusion column for argon isotope separation.
- Effect of changes in feed rate and cut on circulating flow within thermal diffusion column for isotope separation.
- Synthesis of value function for multicomponent isotope separation.
- Multicomponent isotope separating cascade composed of elements with large separation factors.
- Comparison of two types of ideal cascades for asymmetric separation processes.