| 1. | The thermal stability of fuel elements is one of the factors that decide lifetime of fuel elements
在堆内运行环境下，燃料元件行为是影响燃料元件寿命的制约因素之一。 |
| 2. | At the same time , cefr is the first pool - type lmfbr ( liquid metal fast breeder reactor ) using dacay heat removel system to remove core decay heat
另外， cefr又是世界上首次在堆内采用非能动手段来排出堆芯余热的池式快堆。 |
| 3. | There are many equipments important to safety in - vessel of cefr , such as intermediate heat exchanger , decay heat exchanger , primary coolant pump , and core support structure
其堆内有许多涉及反应堆安全的重要部件，如中间热交换器，事故热交换器，一次主循环钠泵以及堆内支承等。 |
| 4. | In order to get stress analysis and assessment to these equipments , it is necessary to understand clearly the thermal - hydraulical behavor in - vessel of cefr
为了能够对这些大型部件及结构材料的力学应力分析和评定提供温度和压力载荷，必须对整个堆内的热工水力行为有清楚的认识和把握。 |
| 5. | Abstract : carbon dioxide was introduced into the wheat bulk stored in a brick silo through a duct system and was recirculated for even distribution till co2 concentration to 70 96 in wheat bulk
文摘:二氧化碳被导入一管道系统并使其在砖筒仓的粮堆内逐渐均匀分布，直到其在粮堆中的浓度达70以上。 |
| 6. | Because it is very complicated in cefr either in normal condition or accident condition , numerical analysis is important in these cases that the out - of - pile test have not been performed
无论是在正常工况还是在事故工况下，整个堆内都呈现出非常复杂的热工水力现象，在我们还没有能力进行实验模拟的情况下，数值分析非常必要。 |
| 7. | Upon the investigation on the domestic and foreign status of this issuse , and according to the situation of cefr , the detailed numerical analysis is performed using cfd software . the major researches are outlined as the following four aspects . 1
本文针对该问题的国内外研究现状，紧密结合工程建设的需要，应用cfd软件，对cefr的整个堆内过程进行了详细的数值模拟和研究，主要内容如下： 1 |
| 8. | According to the requirements of the cng on neutron flux , critical wavelength and distance between inpile guides and the cns , the relation between the source size and the critical angle of the coating material of the inpile guides as well as neutron flux at exit of the cngs have been studied
根据导管设计指标的需要，研究了冷源尺寸与堆内导管内壁镀膜材料的全反射临界角和导管系统出口处中子注量率的关系。 |
| 9. | Different from the previous procedure in which the hot plenum and cold plenum are calculated separately , the whole model including hot and cold plenum has been setted up in the present paper . it improves the calculation precision greatly . 2
首次将堆内的冷热钠池进行了一体化的建模，克服了以往将冷热钠池分开计算的缺点，使得计算的准确度大为提高，同时使计算的难度也大大提高，这种大规模的钠池分析计算国内外未见报道； 2 |
| 10. | Transient experiment is introduced , whose research method is that absorber is moved down and up with different speed , power of fuel rod changes with different speed as well , so behavior of fuel rod will be studied . physics design is most important in transient experiment
本文简述了国内外压水堆高性能燃料棒研究的发展情况，提出了我国进行压水堆高性能燃料棒瞬态行为堆内试验(以下简称瞬态试验)的紧迫性、必要性和可能性。 |
