Abstract
The techniques employed in high speed linear cascade testing to simulate the effect of unsteadiness are presented and compared with low speed counterparts. Results are obtained from a high speed cascade and a low speed cascade. Both are models of an existing (conventional) low pressure turbine blade. They are compared under steady and unsteady flow conditions. The results show that the same quantitative values of losses are obtained, proving the validity of the low speed approach for profiles with an exit Mach number of the order of 0.64. The range of validity of the conclusions is extended by reference to a profile designed using current low pressure turbine design practice. Wake traverses using pneumatic probes reveal that the unsteadiness reduced the profile losses up to Mach numbers of 0.9
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© 2006 Springer
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Vera, M., Hodson, H., Vazquez, R. (2006). THE EFFECT OF MACH NUMBER ON LP TURBINEWAKE-BLADE INTERACTION. In: Hall, K.C., Kielb, R.E., Thomas, J.P. (eds) UNSTEADY AERODYNAMICS, AEROACOUSTICS AND AEROELASTICITY OF TURBOMACHINES. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4605-7_16
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DOI: https://doi.org/10.1007/1-4020-4605-7_16
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-4267-6
Online ISBN: 978-1-4020-4605-6
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