In this section
@article{Eastwood:2012,
author = {Eastwood, D and Coren, DD and Long, CA and Atkins, NR and Childs, PRN and Scanlon, TJ and Guijarro-Valencia, A},
journal = {Journal of Engineering for Gas Turbines and Power-Transactions of the ASME},
pages = {082501--1--082501--9},
title = {Experimental Investigation of Turbine Stator Well Rim Seal, Re-Ingestion and Interstage Seal Flows Using Gas Concentration Techniques and Displacement Measurements},
volume = {134},
year = {2012}
}
TY - JOUR
AB - Gas turbine engine performance requires effective and reliable internal cooling over theduty cycle of the engine. Life predictions for rotating components subject to the main gaspath temperatures are vital. This demands increased precision in the specification of theinternal air system flows which provide turbine stator well cooling and sealing. This inturn requires detailed knowledge of the flow rates through rim seals and interstage labyrinthseals. Knowledge of seal movement and clearances at operating temperatures is ofgreat importance when prescribing these flows. A test facility has been developed atthe University of Sussex, incorporating a two stage turbine rated at 400 kW with anindividual stage pressure ratio of 1.7:1. The mechanical design of the test facility allowsinternal cooling geometry to be rapidly re-configured, while cooling flow rates ofbetween 0.71 CW, ENT and 1.46 CW, ENT, may be set to allow ingress or egress dominatedcavity flows. The main annulus and cavity conditions correspond to in cavity rotationalReynolds numbers of 1.71 106< Reu<1.93 106. Displacement sensors have beenused to establish hot running seal clearances over a range of stator well flow conditions,allowing realistic flow rates to be calculated. Additionally, gas seeding techniques havebeen developed, where stator well and main annulus flow interactions are evaluated bymeasuring changes in gas concentration. Experiments have been performed which allowrim seal and re-ingestion flows to be quantified. It will be shown that this work developsthe measurement of stator well cooling flows and provides data suitable for the validationof improved thermo-mechanical and CFD codes, beneficial to the engine design process.
AU - Eastwood,D
AU - Coren,DD
AU - Long,CA
AU - Atkins,NR
AU - Childs,PRN
AU - Scanlon,TJ
AU - Guijarro-Valencia,A
EP - 1
PY - 2012///
SP - 082501
TI - Experimental Investigation of Turbine Stator Well Rim Seal, Re-Ingestion and Interstage Seal Flows Using Gas Concentration Techniques and Displacement Measurements
T2 - Journal of Engineering for Gas Turbines and Power-Transactions of the ASME
VL - 134
ER -