High-fidelity simulations of high-pressure turbines
One of the greatest challenges to modern computational fluid dynamics is the accurate simulation of turbulent phenomena in complex environments. An exemplar of critical importance to aviation is the aero-engine high-pressure turbine (HPT). HPT flows are transonic, highly turbulent and can involve significant levels of heat transfer to the HPT blades. There is also a strong interaction of stationary and rotating blades, which creates a significantly unsteady and non-uniform flow field. This is important because the unsteadiness and turbulence affects both the aerodynamic efficiency and the heat transfer from the gas to the blades, which foreshortens the blade life through thermal damage. To make aero-engines ever more efficient, there is a critical need from both industry and academia to further our understanding of heat-transfer and aerodynamic loss mechanisms.
In the current project, we will conduct high-fidelity simulations of HPT flows using a well-established high-performance DNS/LES code. The data resulting from the massively parallel simulations will be used in order to shed light on the detailed loss and heat transfer mechanisms and to assess current modelling strategies, and if possible, improve upon them.
Leader: Richard Sandberg
Staff: Mohsen Talei
Optimisation of resources and infrastructure
energy efficiency; fluid dynamics; numerical modelling; propulsion systems; turbulence