Aerodynamics of lobed mixers and inter-turbine ducts

拟与加拿大普惠公司合作开展的研究项目旨在提高我们对燃气涡轮发动机涡轮间导管和波瓣混合器部件中三维流场基本原理的理解。这一目标将通过基于几何和流动参数的系统变化的研究来实现，这些参数被认为是这些发动机部件中流动发展的主导因素。该研究将协同使用实验和计算技术来执行具有相对较大参数集的测试矩阵，同时实现所讨论的流场的所需空间和时间分辨率。对这些发动机部件中的流体动力学的更好理解将为它们进一步优化以减小尺寸和改进空气动力学性能提供基础，这将支持设计具有更低重量、更小尺寸和更高效率的燃气涡轮发动机的更广泛目标。

The proposed research project, to be undertaken in collaboration with Pratt and Whitney Canada, aims to improve our understanding of the fundamentals of the three-dimensional flow fields in the inter-turbine duct and lobed mixer components of gas-turbine engines. This objective will be achieved through an investigation based on systematic variations of the geometric and flow parameters that are deemed to dominate the flow development in these engine components. The study will make synergic use of experimental and computational techniques to execute a test matrix with a relatively large parameter set while achieving the desired spatial and temporal resolution of the flow fields in question. Improved understanding of the fluid dynamics in these engine components will provide the foundation for their further optimization towards reduced size and improved aerodynamic performance, which will support the broader goal of designing gas-turbine engines with lower weight, reduced size, and greater efficiency.