搜索结果: 31-45 共查到“裂变堆工程技术其他学科”相关记录184条 . 查询时间(3.851 秒)
裂变核全套中子评价数据对反应堆设计和安全运行、乏燃料少锕系核素嬗变率、嬗变系统及高燃耗反应堆设计提供重要的基础数据。文章对核数据分类、现行主要全套评价数据库及全套核数据评价方法进行阐述，并对234U(n,f)和237Np(n,2n)反应截面的实验数据进行评价。完成的裂变核全套中子数据整体满足用户需求，比原评价结果有较明显改进。
针对球床模块式高温气冷堆(HTRPM)燃耗测量系统的设计特点，利用MonteCarlo模拟方法，分析球形体源测量中不同形式的限制束流的准直器的性能及其对燃耗测量的影响。结果表明，对HTRPM在线燃耗测量，选择双锥孔准直器更为适宜。
中国实验快堆缓发中子探测系统的瞬态模拟与分析
包壳破损 泄漏 反冲 热扩散
2009/10/9
根据中国实验快堆缓发中子探测系统的结构特点和探测原理，构建了缓发中子探测系统的计算模型。基于该模型，开发了计算机模拟程序。针对不同工况和不同燃料元件包壳破损时刻，进行了缓发中子探测信号的模拟计算。计算结果基本反映了计算情况下缓发中子探测信号的发展趋势。同时，还对燃料温度和燃料燃耗对缓发中子探测信号的影响进行了物理分析。
持续裂变链引发概率的直接模拟研究
持续裂变链 引发概率 蒙特卡罗直接模拟 超瞬发临界
2010/7/6
讨论了判断持续裂变链引发的理论依据，利用基于Geant4toolkit开发的蒙特卡罗直接模拟程序，计算了一系列测试几何和超瞬发临界5c/的GodivaⅠ反应堆内持续裂变链的引发概率。结果表明，蒙特卡罗直接模拟计算的结果与Mercury程序及确定性理论结果均一致
Meteodiffusive Characterization of Algiers' Nuclear Research Reactor
Meteodiffusive Characterization Algiers Nuclear Research Reactor
2009/9/3
In the framework of the environmental impact studies of the nuclear research reactor of Algiers, we will present the work related to the atmospheric dispersion of releases due to the installation in n...
Approaches, Relevant Topics, and Internal Method for Uncertainty Evaluation in Predictions of Thermal-Hydraulic System Codes
Uncertainty Evaluation Thermal-Hydraulic System Codes
2009/9/3
The evaluation of uncertainty constitutes the necessary supplement of best-estimate calculations performed to understand accident scenarios in water-cooled nuclear reactors. The needs come from the im...
Dynamic Analysis of Coolant Channel and Its Internals of Indian 540 MWe PHWR Reactor
Coolant Channel Indian 540 MWe PHWR Reactor
2009/9/3
The horizontal coolant channel is one of the important parts of primary heat transport system in PHWR type of reactors. There are in all 392 channels in the core of Indian 540 MWe reactor. Each ...
Evaluation of Heat Removal from RBMK-1500 Core Using Control Rods Cooling Circuit
Heat Removal RBMK-1500 Core
2009/9/3
The Ignalina nuclear power plant is a twin unit with two RBMK-1500, graphite moderated, boiling water, multichannel reactors. After the decision was made to decommission the Ignalina NPP, Unit 1 was s...
Wastes Management Through Transmutation in an ADS Reactor
Wastes Management Transmutation ADS Reactor
2009/9/3
The main challenge in nuclear fuel cycle closure is the reduction of the potential radiotoxicity, or of the time in which that possible hazard really exists. Probably, the transmutation of minor actin...
Coupling of Modular High-Temperature Gas-Cooled Reactor with Supercritical Rankine Cycle
Supercritical Rankine Cycle High-Temperature
2009/9/3
This paper presents investigations on the possible combination of modular high-temperature gas-cooled reactor (MHTGR) technology with the supercritical (SC) steam turbine technology and the prospectiv...
Decay Heat Removal and Transient Analysis in Accidental Conditions in the EFIT Reactor
Decay Heat Removal the EFIT Reactor
2009/9/3
The development of a conceptual design of an industrial-scale transmutation facility (EFIT) of several 100 MW thermal power based on accelerator-driven system (ADS) is addressed in the frame of ...
Euler-Euler Large Eddy Simulation of a Square Cross-Sectional Bubble Column Using the Neptune_CFD Code
Euler-Euler Large Eddy the Neptune_CFD Code
2009/9/3
In this work, we report on Euler-Euler large eddy simulation (EELES) of dispersed bubbly flow in a square cross-sectional bubble column. Simulations are performed using the Neptune_CFD package, and re...
Review of Available Data for Validation of Nuresim Two-Phase CFD Software Applied to CHF Investigations
Available Data Nuresim Two-Phase CFD
2009/9/3
The NURESIM Project of the 6th European Framework Program initiated the development of a new-generation common European Standard Software Platform for nuclear reactor simulation. The thermal-hydraulic...
Modeling of Multisize Bubbly Flow and Application to the Simulation of Boiling Flows with the Neptune_CFD Code
Multisize Bubbly Flow Boiling Flows
2009/9/3
This paper describes the modeling of boiling multisize bubbly flows and its application to the simulation of the DEBORA experiment. We follow the method proposed originally by Kamp, assuming a given m...
Computational Fluid Dynamics for Gas-Liquid Flows
Computational Fluid Dynamics Gas-Liquid Flows
2009/9/3
Computational fluid dynamics (CFD) codes are widely used in industrial applications for single-phase flows (e.g., in the automotive or aircraft industries). On the other hand, the application of CFD f...