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Numerical Studies of Turbine Rim Sealing Flows on a Chute Seal Configuration

Gao, Feng, Chew, John, Beard, PF, Amirante, Dario and Hills, Nicholas (2017) Numerical Studies of Turbine Rim Sealing Flows on a Chute Seal Configuration In: 12th European Turbomachinery Conference, 2017-04-03 - 2017-04-07, Stockholm, Sweden.

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Abstract

This paper presents CFD (computational fluid dynamics) modelling of a chute type rim seal that has been previously experimentally investigated. The study focuses on inherent large-scale unsteadiness rather than that imposed by vanes and blades or external flow. A large-eddy simulation (LES) solver is validated for a pipe flow test case and then applied to the chute rim seal rotor/stator cavity. LES, Reynolds-averaged Navier-Stokes (RANS) and unsteady RANS (URANS) models all showed reasonable agreement with steady measurements within the disc cavity, but only the LES shows unsteadiness at a similar distinct peak frequency to that found in the experiment, at 23 times the rotational frequency. However, there are some significant differences between unsteadiness predicted and the measurements, and possible causes of these are discussed.

Item Type: Conference or Workshop Item (Conference Paper)
Subjects : Mechanical Engineering Sciences
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
NameEmailORCID
Gao, Fengf.gao@surrey.ac.ukUNSPECIFIED
Chew, JohnJ.Chew@surrey.ac.ukUNSPECIFIED
Beard, PFUNSPECIFIEDUNSPECIFIED
Amirante, DarioD.Amirante@surrey.ac.ukUNSPECIFIED
Hills, NicholasN.Hills@surrey.ac.ukUNSPECIFIED
Date : 2017
Copyright Disclaimer : Copyright 2017 by Rolls-Royce plc. This is an Open Access article.
Contributors :
ContributionNameEmailORCID
UNSPECIFIEDEuroturbo, UNSPECIFIEDUNSPECIFIED
Uncontrolled Keywords : TURBINE RIM SEAL, CHUTE SEAL, UNSTEADY FLOW STRUCTURE, LARGE-EDDY SIMULATION
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 09 Mar 2017 10:33
Last Modified : 19 Jul 2017 12:28
URI: http://epubs.surrey.ac.uk/id/eprint/813729

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