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Experimental and computationalinvestigation into the use of co-flow fluidic thrustvectoring on a small gas turbine

Published online by Cambridge University Press:  03 February 2016

A. Banazadeh ,
F. Saghafi ,
M. Ghoreyshi  and
P. Pilidis
A. Banazadeh
Affiliation:
Department of Aerospace Engineering, Sharif University of Technology, Tehran, Iran
F. Saghafi
Affiliation:
Department of Aerospace Engineering, Sharif University of Technology, Tehran, Iran
M. Ghoreyshi
Affiliation:
Propulsion and Power, School of Engineering, Cranfield University, Bedford, UK
P. Pilidis
Affiliation:
Propulsion and Power, School of Engineering, Cranfield University, Bedford, UK
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Abstract

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This paper presents the application of a relatively newtechnique of fluidic thrust-vectoring (FTV), namedCo-flow, for a small gas-turbines. The performanceis obtained via experiment and computational fluiddynamics (CFD). The effects of a few selectedparameters including the engine throttle setting,the secondary air mass-flow rate and the secondaryslot height upon thrust-vectoring performance areprovided. Thrust vectoring performance ischaracterised by the ability of the system todeflect the engine thrust with respect to thedelivered secondary air mass-flow rate. Theexperimental study was conducted under staticconditions in an outdoor environment at CranfieldUniversity workshop that was especially designed forthis purpose. As part of this investigation, thesystem was modelled by CFD techniques, usingPointwise’s Gridgen software and thethree-dimensional flow solver, Fluent. Also,Cranfield’s gas-turbine performance code(TurboMatch) was utilised to estimate boundaryconditions for the CFD analysis with respect to theintegrated nozzle. The presented technique iseasy-to-use approach and offers better result forthrust-vectoring problems than previously publishedworks. Experimental results do show the overallviability of the blowing slot mechanism as a meansof vectoring the engine thrust, with the currentconfiguration. Computational predictions are shownto be consistent with the experimental observationsand make the CFD model a reliable tool forpredicting Co-flow fluidic thrust-vectoringperformance of similar systems.

Information

Type
Research Article
Information
The Aeronautical Journal , Volume 112 , Issue 1127 , January 2008 , pp. 17 - 25
Copyright
Copyright © Royal Aeronautical Society 2008 

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