Abstract
The spike flow is often observed around the lead-edge of a blade in an axial compressor cascade, which would lead to the sudden expansion and pressure diffusion. A strong spike flow might create a local separation bubble near the leading-edge and even trigger the boundary layer transition immediately (Walraevens and Cumpsty in J. Turbomach 117:115-125, (1995) [1]).
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Acknowledgements
The project is supported by the UK Turbulence Consortium (EP/L000261/1 and EP/R029326/1) and the UK Consortium of Turbulent Reacting Flows (EP/K024574/1 and EP/R029369/1) under EPSRC, and the National Natural Science Foundation of China (51420105008, 51790513 and 51476004). The simulations were conducted on the ARCHER supercomputer.
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Fang, J., Rolfo, S., Yu, X., Moulinec, C., Xu, X., Emerson, D.R. (2020). Large-Eddy Simulation of Boundary Layer Transition in a Compressor Cascade. In: GarcÃa-Villalba, M., Kuerten, H., Salvetti, M. (eds) Direct and Large Eddy Simulation XII. DLES 2019. ERCOFTAC Series, vol 27. Springer, Cham. https://doi.org/10.1007/978-3-030-42822-8_44
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