CUED Publications database

Effect of labyrinth seal configurations on leakage performance using LES

Dai, Y and Tyacke, J and Tucker, P (2016) Effect of labyrinth seal configurations on leakage performance using LES. In: 54th AIAA Aerospace Sciences Meeting, AIAA Science and Technology Forum and Exposition, 2016-1-3 to 2016-1-8, San Diego -..

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Abstract

© 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All Rights Reserved. Labyrinth seals are extensively used in gas turbines to control leakage between static and rotating components. To control discharge coefficient, in actual gas turbine applications the labyrinth seal blade can also be designed to be inclined. In this research, the effects of seal geometry on the flow is considered. Large Eddy Simulation (LES) is used to study 80 different geometries and different pressure ratios. LES has the ability to accurately predict this particular type of flow with relatively modest grids. Multiple advanced designs are examined in detail. In comparison to the baseline geometry, seals with grooves flow an improvement of 16% in sealing efficiency.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div A > Fluid Mechanics
Div A > Turbomachinery
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 20:17
Last Modified: 10 Aug 2017 01:35
DOI: