Computational fluid dynamics modelling of sprays of liquids into gases and vapours

液体喷雾成气体和蒸汽的计算流体动力学建模

• 批准号: 2648428
• 金额: --
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2648428
• 关键词: Computational; fluid; dynamics; modelling; sprays

This PhD project addresses the kinematic and thermal behaviour of sprays of liquids into gases, with a particular focus on the dynamics of the type of pressurisers used to control the operating pressure in pressurised water nuclear power stations. The main objective is the development of a computational model of sprays that is capable of reproducing the heat transfer and pressure response of the pressuriser to a given water spray input (total mass of injected water and droplet size distribution), or to a given heating power input. The CFD model will be based on the approach to spray modelling previously developed at the University of Manchester in which the spray is represented by solving modelled transport equations for the first four moments of the droplet size distribution function. This allows for a more computationally efficient solution than the traditional stochastic type of discrete droplet modelling. A substantial aspect of the PhD will be to validate the spray model against experimental data from academic literature and from the results of spray experiments at the University of Manchester. In the later stages, the PhD will include a placement at Rolls-Royce, where the model will be implemented on the local IT system and applied to geometries and conditions of industrial relevance.

这个博士项目解决了液体喷射到气体中的运动学和热行为，特别关注用于控制压水核电站运行压力的增压器类型的动力学。主要目的是开发一种喷雾计算模型，该模型能够再现加压器对给定喷水输入（注入水的总质量和液滴尺寸分布）或给定加热功率输入的热传递和压力响应。计算流体力学模型将基于曼彻斯特大学先前开发的喷雾建模方法，其中喷雾通过求解液滴尺寸分布函数前四个时刻的模拟传输方程来表示。这允许比传统的随机类型的离散液滴建模在计算上更有效的解决方案。博士学位的一个重要方面将是验证喷雾模型对来自学术文献的实验数据和曼彻斯特大学喷雾实验的结果。在后期阶段，博士学位将包括在罗尔斯·罗伊斯的一个职位，该模型将在当地的IT系统上实施，并应用于工业相关的几何形状和条件。