Development and Validation of Thermal-Hydraulic ... in BWR's and PWR's: Can modern CFD models reliably predict DNB for nuclear power applications?

英国政府决定继续使用核能，以促进英国的低碳发电系统。新核电站的设计要尽可能安全，这一点很重要，这项研究将有助于实现这一目标。一般来说，当水冷核反应堆保持由水冷却时，它基本上不可能过热并受到损坏。相反，当水冷却剂无意中变成蒸汽时，这种可能性确实会出现。该项目旨在开发更好的预测工具，以了解冷却剂何时从液态水变为蒸汽。更好的预测能力将使新工厂的设计更加安全。该项目将与我们在印度民用核电行业的同事合作进行，特别是在孟买的Bhaba原子研究中心。在这里，我们的印度同事在联合王国小组的支持下，将对沸腾过程和液态水冷却剂转化为蒸汽的过程进行复杂的测量。除了这些测量，我们和他们将开发复杂的计算预测工具，用于从液态水到蒸汽的变化。这些预测工具将研究沸腾过程的基本物理学，直到几微米的尺度，并将扩展到应用于整个核芯部分尺度的预测工具的构建和验证。将开发的预测工具的质量和有效性将能够通过将其预测与观察到的水-蒸汽转变的发生进行比较来评估。

The United Kingdom government has decided that continued use of nuclear power should be made to contribute to a low-carbon electricity generating system in the United Kingdom. It is important that new nuclear plants are designed to be as safe as possible, and this research will contribute to this.Broadly, when a water-cooled nuclear reactor remains cooled by water, it is essentially impossible for it to overheat and suffer damage. Conversely, when the water coolant turns inadvertently to steam this possibility does arise. This project is aimed at developing better predictive tools to understand when the change of coolant from liquid water to steam occurs. Better predictive capability here will allow new plants to be designed with even more confidence as to their safety.This project will be undertaken in collaboration with our colleagues in the Indian civil nuclear power industry, specifically at the Bhaba Atomic Research Centre in Mumbai. Here our Indian colleagues, supported by the United Kingdom team, will engage in complex measurements of the boiling process, and of the turning of the liquid water coolant into steam. Alongside these measurements, we and they will develop sophisticated computational predictive tools for this change from liquid water to steam. These predictive tools will study the fundamental physics of the boiling process, right down at a scale of a few microns, and will extend to the construction and validation of predictive tools applied to the scale of whole portions of the nuclear core.The quality and effectiveness of the predictive tools to be developed will be able to be assessed by comparing their predictions with the observed occurrence of this water-steam transition.