Glaciated Ice Icing and Shedding in Gas Turbine Compressors

燃气轮机压缩机中的冰川结冰和脱落

• 批准号: 2640736
• 金额: --
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2640736
• 关键词: Glaciated; Ice; Icing; Shedding; Gas

Several recent jet engine power loss events have been linked to the ingestion of small high-altitude ice crystals which build up on engine elements. These deposits disrupt airflow and cause a performance loss and cause severe damage if they become large prior to breaking off. Previous incidents have led to the release of new certification requirements which places the onus in industry to design new ice-resilient engines.This project is both numerical and experimental and aims to further characterise ice accretion and in particular the ice shedding process, filling scientific and industrial knowledge gaps. It will introduce a robust physics-based shedding model into a computer simulation suite for engine icing. To validate this model an experimental campaign with engine representative geometries will be conducted - the extent of ice accretion prior to shedding and sensitivity to engine architecture is currently poorly understood and rarely measured. This tool will allow industry to predict the build-up locations of ice better and enable the design of future engines where ice deposition is well controlled.

最近发生的几起喷气发动机功率损失事件与摄入发动机元件上积聚的高空小冰晶有关。这些沉积物会扰乱气流并导致性能损失，如果它们在断裂之前变大，则会造成严重损坏。之前的事件导致了新的认证要求的发布，这使得工业界有责任设计新的抗冰发动机。该项目既是数值性的也是实验性的，旨在进一步表征积冰，特别是冰脱落过程，填补科学和工业知识空白。它将在发动机结冰的计算机模拟套件中引入基于物理的稳健脱落模型。为了验证该模型，将使用发动机代表性几何形状进行实验活动 - 目前对脱落前积冰的程度以及对发动机结构的敏感性知之甚少，也很少进行测量。该工具将使工业界能够更好地预测冰的堆积位置，并能够设计出能够很好地控制冰沉积的未来发动机。