Unifying the modelling of innozzle flow and subsequent spray formation at high pressure injection systems based on prob

基于问题统一高压喷射系统喷嘴流动和后续喷雾形成的建模

• 批准号: 1990670
• 金额: --
• 依托单位: University of Brighton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1990670
• 关键词: Unifying; modelling; innozzle; flow; subsequent

An increase of practical applications has led to increase in interest for development of SC flow modelling.Correlation between experiment and simulation isproblematic as taking measurements of fluids under SC conditions has proven challenging. Measurement resolution is also a challenging consideration,especially for injection of sprays under SC mixing conditions due to the various scales needed to be considered. the differing mixing regime of SC fluids, greaterdifficulty in measurement of supercritical fluids, and scaling of flows has made it problematic, thus far, for accurate CFD models of entire jet formations to beformulated. It is proposed for this project that a unified description the internal nozzle and subsequent jet spray breakup formation through the development ofadvanced numerical tools and by treating the development of droplet and ligament surface as a continuous evolution process. An increase of practicalapplications has led to increase in interest for development of SC flow modelling.Correlation between experiment and simulation is problematic as takingmeasurements of fluids under SC conditions has proven challenging. Measurement resolution is also a challenging consideration, especially for injection ofsprays under SC mixing conditions due to the various scales needed to be considered. the differing mixing regime of SC fluids, greater difficulty in measurementof supercritical fluids, and scaling of flows has made it problematic, thus far, for accurate CFD models of entire jet formations to be formulated. It is proposed forthis project that a unified description the internal nozzle and subsequent jet spray breakup formation through the development of advanced numerical tools andby treating the development of droplet and ligament surface as a continuous evolution process.

随着实际应用的增加，人们对SC流动模型的发展越来越感兴趣。实验和模拟之间的相关性是有问题的，因为在SC条件下测量流体已经被证明是具有挑战性的。测量分辨率也是一个具有挑战性的考虑因素，特别是对于在SC混合条件下喷射喷雾，因为需要考虑各种尺度。到目前为止，SC流体的不同混合状态、超临界流体测量的更大困难以及流量的缩放使得整个射流形成的精确CFD模型难以制定。本文提出通过发展先进的数值计算工具，将液滴和韧带表面的发展视为一个连续的演化过程，统一描述喷嘴内部及随后射流喷雾破碎的形成过程。随着实际应用的增加，人们对SC流动模型的发展越来越感兴趣。实验和模拟之间的相关性是有问题的，因为在SC条件下测量流体已经被证明是具有挑战性的。测量分辨率也是一个具有挑战性的考虑因素，特别是对于在SC混合条件下喷射喷雾，因为需要考虑各种尺度。到目前为止，SC流体的不同混合状态、超临界流体测量的更大困难以及流量的缩放使得整个射流形成的精确CFD模型难以制定。本文提出通过发展先进的数值计算工具，将液滴和韧带表面的发展视为一个连续的演化过程，统一描述喷嘴内部及随后的射流喷雾破碎的形成过程。