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

ICHAruS是一个博士网络，旨在培训早期研究人员，能够面对基于电磁辅助燃烧的创新、尖端技术领域的当前和未来挑战，以实现对氢焰的完全控制。ICHAruS旨在通过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的合作伙伴关系提供博士培训。因此，这一伙伴关系的目的是了解在所有流量范围内支配氢气燃烧和电磁场之间相互作用的物理过程，实现对火焰的控制，并确定关键参数，从而能够设计出创新的、超低NOx和防闪燃烧装置。通过等离子体放电和电磁调节来控制氢焰，为大力加快实现能源和运输部门的零碳目标提供了机会。将致力于三个具体的研究目标：1)研究和模拟电磁场对物质迁移和化学动力学的影响，以揭示外部电磁场对氢气在纯氧和空气中的反应化学反应的影响，并确定对污染物形成的任何影响。还将研究与电磁漂移相反的差异扩散对火焰结构的影响。2)建立了低能和高能电磁助燃的湍流燃烧模型。将研究电磁漂移和湍流传输之间的竞争效应，并将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合。3)用于稳定火焰的创新电磁辅助控制技术的实验和数值研究。单旋流火焰和环状火焰都将被研究。燃料分级和喷射也将作为在实际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.