A Summary of Computations of Ingestion at the University of Bath

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Rim seals in gas turbines are used to reduce the potentially
damaging ingestion of hot gas into the rotor-stator wheel-space of a
turbine stage. Sealing air, bled from the compressor, is also used to
reduce or prevent ingestion, but this can be at the expense of stage
efficiency.
This paper summarises recent research into the computation of
the fluid dynamics and heat transfer of ingestion carried out at the
University of Bath. 3D Unsteady Reynolds-averaged Navier-
Stokes (URANS) simulations have been carried out, and much
more economical simplified steady state computational models
have also been tested. The results of the computations are compared
with experimental measurements (also made at the University) of
pressure, tracer gas concentration based sealing effectiveness, swirl
and heat transfer for different generic and also engine-
representative rim seals. The computations allow insight into
the flow physics of ingestion and factors affecting the most efficient
use of sealing air, as well as providing information to support the
development of the theoretical models of ingestion that are useful
to engine designers. The experimental test facility permits measurement
and ranking of sealing effectiveness for a range of different
rim seal configurations.
Original languageEnglish
Title of host publicationProceedings of International Gas Turbine Congress 2015 Tokyo
ISBN (Electronic)ISBN978-4-89111-008-6
Publication statusPublished - 15 Nov 2015

Fingerprint

Ingestion (engines)
Seals
Heat transfer
Engines
Air
Fluid dynamics
Test facilities
Gases
Stators
Gas turbines
Compressors
Wheels
Turbines
Physics
Rotors

Cite this

Wilson, M., & Lock, G. (2015). A Summary of Computations of Ingestion at the University of Bath. In Proceedings of International Gas Turbine Congress 2015 Tokyo [77]

A Summary of Computations of Ingestion at the University of Bath. / Wilson, Michael; Lock, Gary.

Proceedings of International Gas Turbine Congress 2015 Tokyo. 2015. 77.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wilson, M & Lock, G 2015, A Summary of Computations of Ingestion at the University of Bath. in Proceedings of International Gas Turbine Congress 2015 Tokyo., 77.
Wilson M, Lock G. A Summary of Computations of Ingestion at the University of Bath. In Proceedings of International Gas Turbine Congress 2015 Tokyo. 2015. 77
Wilson, Michael ; Lock, Gary. / A Summary of Computations of Ingestion at the University of Bath. Proceedings of International Gas Turbine Congress 2015 Tokyo. 2015.
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abstract = "Rim seals in gas turbines are used to reduce the potentiallydamaging ingestion of hot gas into the rotor-stator wheel-space of aturbine stage. Sealing air, bled from the compressor, is also used toreduce or prevent ingestion, but this can be at the expense of stageefficiency.This paper summarises recent research into the computation ofthe fluid dynamics and heat transfer of ingestion carried out at theUniversity of Bath. 3D Unsteady Reynolds-averaged Navier-Stokes (URANS) simulations have been carried out, and muchmore economical simplified steady state computational modelshave also been tested. The results of the computations are comparedwith experimental measurements (also made at the University) ofpressure, tracer gas concentration based sealing effectiveness, swirland heat transfer for different generic and also engine-representative rim seals. The computations allow insight intothe flow physics of ingestion and factors affecting the most efficientuse of sealing air, as well as providing information to support thedevelopment of the theoretical models of ingestion that are usefulto engine designers. The experimental test facility permits measurementand ranking of sealing effectiveness for a range of differentrim seal configurations.",
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