Grace Time

宽限期

• 批准号: EP/M018733/1
• 负责人: Simon Walker
• 金额: $ 86.79万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM018733%2F1
• 关键词: Grace; Time

Following some fault in a nuclear plant, a safe outcome will nonetheless be achieved so long as adequate cooling can be provided to the plant for a period after the fault, and heat generation has naturally fallen to trivial levels. Some faults may themselves have been associated with external events, such as an earthquake or a tsunami, which might have caused external power supplies to the plant to cease to be available. It is thus plainly desirable for the cooling needed by the plant to be provided by holy "passive" means, not dependent on the availability of either site-generated or externally-generated electricity to drive pumps and so on. Providing cooling by passive means such as natural convection is very attractive and very reliable, but it is not an easy phenomenon to predict reliably; for example, just 'how much' cooling will natural circulation provide?. The main objectives of this piece of research are to develop and validate methods to contribute to reliable prediction of this passive cooling.

在核电站发生故障后，只要能在故障后一段时间内为核电站提供足够的冷却，产生的热量自然下降到微不足道的水平，就可以达到安全的结果。一些故障本身可能与外部事件有关，如地震或海啸，这些事件可能导致核电站的外部电力供应停止供应。因此，由神圣的“被动”手段提供电厂所需的冷却显然是可取的，而不是依赖于是否有现场产生的或外部产生的电力来驱动水泵等。通过自然对流等被动方式提供冷却是非常有吸引力和非常可靠的，但要可靠地预测这一现象并不容易；例如，自然循环将提供多少冷却？这项研究的主要目标是开发和验证有助于这种被动冷却的可靠预测的方法。

项目成果

Numerical simulations of a mixed momentum-driven and buoyancy-driven jet in a large enclosure for nuclear reactor severe accident analysis

用于核反应堆严重事故分析的大型外壳内混合动量驱动和浮力驱动射流的数值模拟

• DOI: 10.1016/j.nucengdes.2016.10.053
• 发表时间: 2017
• 期刊: Nuclear Engineering and Design
• 影响因子: 1.7
• 作者: Carasik L

Two-fluid Eulerian-Eulerian CFD modelling of bubbly flows using an elliptic-blending Reynolds stress turbulence model

使用椭圆混合雷诺应力湍流模型对气泡流进行双流体欧拉-欧拉 CFD 建模

• 发表时间: 2018
• 作者: Colombo M

Prediction of dynamic contact angles and bubble departure diameters in pool boiling using equilibrium thermodynamics

使用平衡热力学预测池沸腾中的动态接触角和气泡离开直径

• DOI: 10.1016/j.ijheatmasstransfer.2017.07.013
• 发表时间: 2017
• 期刊: International Journal of Heat and Mass Transfer
• 影响因子: 5.2
• 作者: Ardron K

URANS Simulations of Thermal Stratification in a Large Enclosure for Severe Accident Scenarios

严重事故场景下大型外壳内热分层的 URANS 模拟

• 发表时间: 2015
• 作者: Carasik L

Accuracy of Eulerian-Eulerian, two-fluid CFD boiling models of subcooled boiling flows

• DOI: 10.1016/j.ijheatmasstransfer.2016.06.098
• 发表时间: 2016-12-01
• 期刊: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
• 影响因子: 5.2
• 作者: Colombo, M.;Fairweather, M.
• 通讯作者: Fairweather, M.