The Trigger Mechanism of Vapor Explosion
スポンサーリンク
概要
- 論文の詳細を見る
In the present study, trigger mechanisms of the vapor explosion are experimentally investigated. The interfacial behavior between high temperature molten liquid and low temperature water are experimentally investigated by using a molten material droplet and external pressure pulse. As the results, it is indicated that spontaneous vapor explosion hardly occur in high temperature water near saturation temperature since vapor film is stable. The vapor explosion can occur even in high temperature water near saturation temperature in case that the external pressure pulse is applied to high temperature molten material. Vapor explosion can not occur when the interfacial temperature between the molten material and water is lower than the material melting temperature, even if the vapor film around the molten material is collapsed by the external pressure pulse. It is clarified that the impossibility of the trigger process for the vapor explosion can be judged by comparing the interfacial temperature and the molten material temperature. The results obtained in the present experiments are applied to the results of the large-scale experiments using uranium dioxide. The results indicate that the possibility of the vapor explosion of the uranium dioxide and water under the present LWR operational condition is extremely unlikely. It should be noted that the present criteria should be applicable in case that the melting temperature does not decrease by containing the metal component.
- 一般社団法人 日本原子力学会の論文
- 2002-08-25
著者
-
Abe Yutaka
Institute Of Engineering Mechanics And Systems University Of Tsukuba
-
Nariai Hideki
Institute Of Engineering Mechanics & Systems University Of Tsukuba
-
Abe Y
Nagoya Univ. Nagoya
-
HAMADA Yukihiro
Nissan Motor Co., Ltd.
-
Hamada Yukihiro
Nissan Motor Co. Ltd.
関連論文
- ICONE11-36605 STUDY ON THE VISUAL OBSERVATION OF MOLTEN MATERIAL AND A COOLANT
- ICONE11-36157 STUDY ON THERMAL-HYDRAULIC BEHAVIOR DURING MOLTEN MATERIAL AND COOLANT INTERACTION
- ICONE11-36606 STUDY ON THE OCCURRENCE CONDITION OF BASE-TRIGGERED VAPOR EXPLOSION
- TED-AJ03-298 Estimate of Mechanics property of the CO_2 Hydrate Membrane Strength
- TED-AJ03-297 GROWTH BEHAVIOR OF HYDRATE MEMBRANE AT LOW TEMPERATURE LIQUID CO_2 INJECTION INTO WATER
- Drag Reduction and Thermal Behavior of Nanoscale Concave-Convex Surfaces
- E212 Study on the micro-mechanism of vapor film collapse on high temperature particle surface(Evaporation-2 and others)
- H112 STUDY ON THE CHARACTERISTICS OF COUNTER-CURRENT FLOW IN A VERTICAL PIPE(Liquid film flow)
- Oscillation Frequencies at Condensation Oscillation during Steam Condensation in Subcooled Water (Comparison of Linear Solution with Published Correlations and Experimental Data)
- Critical Heat Flux and Flow Characteristics of Subcooled Flow Boiling in Narrow Tubes
- The Trigger Mechanism of Vapor Explosion
- Self-Triggering Mechanism of Vapor Explosions for the Large-Scale Experiments Involving Fuel Simulant Melt
- Experimental Study on Base-triggered Explosions in Molten-tin/Water Systems
- Self-Triggering Mechanism of Vapor Explosions for a Molten Tin and Water System
- Study of Critical Heat Flux Mechanism in Flow Boiling Using Bubble Crowding Model : Application to CHF in Short Tube and in Tube with Twisted Tape under Non-Uniform Heating Conditions
- Electron-Hole Exchange Energy in Shallow Excitons
- Friction pressure drop and heat transfer coefficient of two-phase flow in helically coiled tube once-through steam generator for integrated type marine water reactor.
- Pressure and fluid oscillations in vent system due to steam condensation, (II). High-frequency component of pressure oscillations in vent tubes under at chugging and condensation oscillation.:High-Frequency Component of Pressure Oscillations in Vent Tubes