Investigation and Control of Hydrogen flames Across the Scales (ICHAruS)

ICHAruS是一个博士网络，旨在培养早期研究人员，能够面对当前和未来在创新领域的挑战，基于电磁辅助燃烧的尖端技术，以实现氢火焰的完全控制。ICHAruS的建立是为了在学术机构和欧洲主要燃气轮机制造商的行业合作伙伴之间建立合作伙伴关系，提供博士培训。此次合作的目的是了解控制氢燃烧和电磁场在所有流量尺度下相互作用的物理过程，实现对火焰的控制，并确定关键参数，从而设计出创新的超低氮氧化物和防闪回燃烧装置。通过等离子体放电和电磁调节控制氢火焰为大力加速实现零碳能源和运输部门的道路提供了机会。具体研究目标有三个：1)研究和模拟电磁场对物种迁移和化学动力学的影响，揭示外部电磁场对纯氧和空气中氢的反应化学的影响，并确定对污染物形成的任何影响。与电磁漂移相反，微分扩散对火焰结构的影响也将被研究。2)低能和高能电磁辅助燃烧湍流燃烧模型的发展。将研究电磁漂移和湍流输运之间的竞争效应，并开发考虑电磁场和等离子体影响的大涡模拟的亚网格尺度闭包。3)创新电磁辅助控制技术的实验和数值研究，用于实际兴趣的火焰稳定。单漩涡火焰和环形结构都将被研究。燃料分级和喷射也将作为在现实发动机中实际实施的基本步骤进行研究。

ICHAruS is a Doctoral Network aimed to train early-stage researchers, able to face current and future challenges in the field of innovative, cutting-edge technologies based on electromagnetic-assisted combustion to achieve full control of hydrogen flames. ICHAruS has been built to provide doctoral training in a collaborative partnership between academic institutions and industry partners who are major European gas turbine manufacturers. The aim of this partnership is thus to understand the physical processes that govern the interaction between hydrogen combustion and electromagnetic fields at all flow scales, to achieve control of the flame and identify the key parameters that would allow for the design of an innovative, ultra-low NOx and flashback-proof combustion device. The control of hydrogen flames through plasma discharge and electromagnetic conditioning offers the opportunity to strongly accelerate the path towards zero-carbon energy and transport sectors. Three specific research objectives will be pursued: 1) Investigation and modelling of electromagnetic field effects on the species transport and chemical kinetics to unveil the effect of external electromagnetic fields on the reaction chemistry of hydrogen in both pure oxygen and air, and also determine any effects on the formation of pollutants. The effect of differential diffusion on the flame structure as opposed to electromagnetic drift will also be investigated. 2) Development of turbulent combustion models for low- and high-energy electromagnetic-assisted combustion. The competing effects between electromagnetic drift and turbulent transport will be investigated and sub-grid scale closures for large-eddy simulations that consider the effect of electromagnetic fields and plasma will be developed. 3) Experimental and numerical investigation of innovative electromagnetic-assisted control technologies for the stabilisation of flames of practical interest. Both single swirl flames and annular configurations will be investigated. Fuel staging and injection will also be studied as a fundamental step towards practical implementation in realistic engines.