宽能谱超高通量试验堆(Tsinghua High Flux Reactor,THFR)是一种具备国际先进水平的水冷高通量反应堆,其辐照孔道未扰动的平均热、快中子通量可达2×10^(15)n·cm^(-2)·s^(-1),具有中子通量高、能谱范围宽、辐照能力强、...宽能谱超高通量试验堆(Tsinghua High Flux Reactor,THFR)是一种具备国际先进水平的水冷高通量反应堆,其辐照孔道未扰动的平均热、快中子通量可达2×10^(15)n·cm^(-2)·s^(-1),具有中子通量高、能谱范围宽、辐照能力强、功能用途广等突出特点,综合辐照性能居于国际领先水平,在工业、农业、航天、医疗等领域具有重要应用。本文分析了THFR反应堆及相关系统、辐照应用系统的设计特点,包括采用“池壳式”堆本体结构、“低中子自屏”堆芯设计、弧板型燃料组件、旋转控制鼓、多用途辐照孔道设计、“能动-非能动”相结合安全系统设计等,并对该堆在核燃料和材料辐照考验、放射性同位素辐照生产、中子科学研究等领域的应用前景进行了展望。THFR为服务国家重大战略需求、保障人民生命健康、培育和发展新质生产力提供了有力支撑。展开更多
The local chaos characteristics of the time series pressure fluctuations of gas liquid two phase flow in a self aspirated reversed flow jet loop reactor are studied by the deterministic chaos analysis technique. It...The local chaos characteristics of the time series pressure fluctuations of gas liquid two phase flow in a self aspirated reversed flow jet loop reactor are studied by the deterministic chaos analysis technique. It is found that the estimated local largest Lyapunov exponent is positive in all cases and the profile is similar to that of the local fractal dimension in this reactor. The positive largest Lyapunov exponent shows that the reactor is a nonlinear chaotic system. The obvious distribution indicates that the local nonlinear characteristic parameters such as the Lyapunov exponent and the fractal dimension could be applied to further study the flow characteristics such as the flow regine transitions and flow structures of the multi phase reactors.展开更多
文摘宽能谱超高通量试验堆(Tsinghua High Flux Reactor,THFR)是一种具备国际先进水平的水冷高通量反应堆,其辐照孔道未扰动的平均热、快中子通量可达2×10^(15)n·cm^(-2)·s^(-1),具有中子通量高、能谱范围宽、辐照能力强、功能用途广等突出特点,综合辐照性能居于国际领先水平,在工业、农业、航天、医疗等领域具有重要应用。本文分析了THFR反应堆及相关系统、辐照应用系统的设计特点,包括采用“池壳式”堆本体结构、“低中子自屏”堆芯设计、弧板型燃料组件、旋转控制鼓、多用途辐照孔道设计、“能动-非能动”相结合安全系统设计等,并对该堆在核燃料和材料辐照考验、放射性同位素辐照生产、中子科学研究等领域的应用前景进行了展望。THFR为服务国家重大战略需求、保障人民生命健康、培育和发展新质生产力提供了有力支撑。
文摘The local chaos characteristics of the time series pressure fluctuations of gas liquid two phase flow in a self aspirated reversed flow jet loop reactor are studied by the deterministic chaos analysis technique. It is found that the estimated local largest Lyapunov exponent is positive in all cases and the profile is similar to that of the local fractal dimension in this reactor. The positive largest Lyapunov exponent shows that the reactor is a nonlinear chaotic system. The obvious distribution indicates that the local nonlinear characteristic parameters such as the Lyapunov exponent and the fractal dimension could be applied to further study the flow characteristics such as the flow regine transitions and flow structures of the multi phase reactors.
