Project Title: Advanced Aerospace Heat Exchanger Design, Performance and Manufacturing

未来的先进军用飞机在可用空间内设计具有足够能力的热管理系统，面临着相当大的技术挑战。各种换热器是飞机热管理系统中的关键部件，对于其中的某些部件，在给定尺寸下所获得的换热性能和物理成形的灵活性对系统的整体性能和可行性具有很强的决定作用。其目的将是识别和评估通过利用添加剂层制造(ALM)的新颖HE设计显著改善热管理性能的机会。在这一点上，研究人员已经探索了使用新的CFD方法对单相流进行建模，并展示了通过优化HE设计以通过3-D打印制造所提供的增强设计机会。本博士学位将考虑：(I)飞机高能化中的两相流(例如蒸发器和冷凝器)；(Ii)针对包含两相流的高能化的高能化设计的3-D打印/附加层制造(ALM)的改进设计，并针对制造过程进行优化/评估/定制；(Iii)在飞机系统设计概念工作期间生成初始高能化设计选项的整体建模和模拟过程。将使用数值模拟和CFD(热与流体流动)方法来开发现有和/或概念性HE设计的验证模型。研究将：(I)开发旨在支持性能/尺寸的新型两相流HE设计的数值和CFD模型和方法；(Ii)设计用于3-D打印/ALM制造的两相流HE演示器，并与BAE Systems进行后续测试，以及(Iii)为飞机概念工作中使用的初始HE设计提供整体建模和模拟过程。为支持英国先进的军用飞机设计挑战，需要增强热交换器CFD/热传输设计分析能力，以确保实现新制造技术的好处。这项研究将告知这一能力。

Future advanced military aircraft face an appreciable technical challenge to design thermal management systems of adequate capacity within the available space. Various heat exchangers (HE) constitute key components within aircraft thermal management systems, and for certain of these the achieved heat transfer performance for a given size, and flexibility of physical shaping, have a strong determining effect on overall system performance and feasibility.This research will investigate and evaluate novel heat exchanger (HE) design for future advanced aircraft thermal management systems. The intention will be to identify and evaluate opportunities to significantly improve thermal management performance through novel HE designs that exploit Additive Layer Manufacture (ALM). To this point researchers have explored the modelling of single-phase flows using new CFD methods and demonstrated the enhanced design opportunities afforded by optimising HE design for manufacture by 3-D printing. This PhD will look to consider: (i) two-phase flow (e.g. evaporators & condensers) in aircraft HE;(ii) HE design enhancements with 3-D printing /additive layer manufacturing (ALM) for a HE containing 2-phase flow and optimised/assessed/tailored for the manufacturing process;(iii) the overall modelling and simulation process for generation of initial HE design options during aircraft system design concept work. Numerical modelling and CFD (heat and fluid flow) approaches will be used to develop validated models of existing and/or conceptual HE designs.The research will: (i) develop Numerical and CFD models and methodologies aimed at supporting novel 2-phase flow HE design for performance/size;(ii) design a 2-phase flow HE demonstrator for 3-D printing/ALM manufacture and subsequent test with BAE Systems, and (iii) provide an overall modelling and simulation process for initial HE design for use in aircraft concept work.In support of UK advanced military aircraft design challenges, an enhanced heat exchanger CFD / heat transfer design analysis capability is needed to ensure the benefits of new manufacturing technologies can be realised. The research will inform this capability.