CUED Publications database

The effect of non-equilibrium boundary layers on compressor performance

Wheeler, APS and Dickens, AMJ and Miller, RJ (2017) The effect of non-equilibrium boundary layers on compressor performance. Proceedings of the ASME Turbo Expo, 2B-201.

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Abstract

© 2017 ASME. The paper investigates the effect of non-equilibrium behaviour of boundary layers on the profile loss of a compressor. The investigation is undertaken using both direct numerical simulation (DNS) of a mid-height section of a compressor blade and a reduced order model, MISES. The solutions are validated using experimental measurements made in the embedded stage of a multistage low speed compressor. The paper shows that up to 35% of the suction surface boundary layer of the compressor blade exhibits non-equilibrium behaviour. The size of this region reduces as the Reynolds number is increased. The non-equilibrium behaviour was found to reduce profile loss in most cases, however, in a range of cases where transition occurs through a small separation the presence of non-equilibrium behaviour was found to increase profile loss.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div A > Turbomachinery
Depositing User: Cron Job
Date Deposited: 06 Sep 2017 20:05
Last Modified: 19 Oct 2017 01:32
DOI: