涡流二极管的设计优化与实验研究
发布时间：2018-10-24 15:17
【摘要】：涡流二极管是一种控制流体单向流动的元件，，其作用类似于逆止阀。由于其具有结构简单、无转动部件、不需外部控制和动力、可靠性高等诸多优点，在医学、核工业、石油化工等行业都有着广泛的应用。也可以应用于氟盐冷却高温堆的非能动余热排出。 本文首先使用计算流体动力学模拟了涡流二极管的内部流动特性，之后根据对模拟结果的分析，提出了几何结构优化方案，即在涡腔底部中央处增加锥角，并改变切向管和涡腔连接处的过渡圆弧半径，并通过数值模拟结合实验的方法，得出最佳的优化尺寸。此外，本文根据相似理论，对水实验结果在熔盐上的适用性进行了分析，并通过数值计算对模化方法进行了验证，为进一步优化涡流二极管的设计提供指导。
[Abstract]:Eddy-current diode is a kind of element which controls the flow of fluid in one-way, and its function is similar to that of reverse stop valve. Because of its simple structure, no rotating parts, no external control and power, high reliability and many other advantages, it has been widely used in medicine, nuclear industry, petrochemical industry and so on. It can also be used for inactive residual heat removal from fluorine salt cooled high temperature reactor. In this paper, the internal flow characteristics of vortex diodes are simulated by computational fluid dynamics (CFD). Then, based on the analysis of the simulation results, a geometric structure optimization scheme is proposed, which is to increase the cone angle at the center of the bottom of the vortex cavity. The radius of the transition arc at the junction of the tangential tube and the vortex cavity is changed and the optimum size is obtained by numerical simulation and experiments. In addition, according to the similarity theory, the applicability of the water experiment results on molten salt is analyzed, and the simulation method is verified by numerical calculation, which provides guidance for the further optimization of the design of eddy current diodes.
【学位授予单位】：中国科学院研究生院（上海应用物理研究所）
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TL35;TH134
本文编号：2291736
[Abstract]:Eddy-current diode is a kind of element which controls the flow of fluid in one-way, and its function is similar to that of reverse stop valve. Because of its simple structure, no rotating parts, no external control and power, high reliability and many other advantages, it has been widely used in medicine, nuclear industry, petrochemical industry and so on. It can also be used for inactive residual heat removal from fluorine salt cooled high temperature reactor. In this paper, the internal flow characteristics of vortex diodes are simulated by computational fluid dynamics (CFD). Then, based on the analysis of the simulation results, a geometric structure optimization scheme is proposed, which is to increase the cone angle at the center of the bottom of the vortex cavity. The radius of the transition arc at the junction of the tangential tube and the vortex cavity is changed and the optimum size is obtained by numerical simulation and experiments. In addition, according to the similarity theory, the applicability of the water experiment results on molten salt is analyzed, and the simulation method is verified by numerical calculation, which provides guidance for the further optimization of the design of eddy current diodes.
【学位授予单位】：中国科学院研究生院（上海应用物理研究所）
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TL35;TH134
【参考文献】
相关期刊论文 前9条
1 王乐勤;孙青军;焦磊;;大流量涡流二极管内流仿真及高阻特性研究[J];工程热物理学报;2008年12期
2 焦磊;陈枞楠;吴淳杰;刘锦涛;王乐勤;;切向管结构对涡流二极管性能影响的数值模拟[J];工程热物理学报;2011年03期
3 邵森林;李江云;邱寒;;提高涡流二极管性能的数值仿真分析[J];工程热物理学报;2011年06期
4 焦磊;陈枞楠;刘世国;尹俊连;孙青军;王乐勤;;涡流二极管三维强旋湍流流动的数值模拟[J];工程热物理学报;2011年11期
5 焦磊;吴淳杰;陈枞楠;尹俊连;刘锦涛;王乐勤;;涡流二极管空化流动的数值计算[J];工程热物理学报;2012年09期
6 尹俊连;王循明;焦磊;王乐勤;;旋流腔结构对涡流二极管性能及流动影响的数值模拟[J];化工学报;2009年06期
7 王乐勤;尹俊连;孙青军;焦磊;;涡流二极管泵内部流场的数值模拟[J];流体机械;2009年04期
8 吴燕华;曹寅;曲世祥;何兆忠;陈X;;工质替代FLiBe研究涡流二极管单向特性的模化分析[J];核技术;2014年11期
9 曹寅;吴燕华;林超;何兆忠;陈X;;涡腔倒角结构对涡流二极管性能影响的数值模拟[J];核技术;2015年01期
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