Simulation and Control of Instationary Reactive Flows in Matrix Burner for Small Power Gas Turbine Applications

Language: English

Published by Cuvillier, Cuvillier Feb 2012, 2012

3954040018 / 9783954040018

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This item is printed on demand - Print on Demand Titel. Neuware -The main objective of this thesis is to analyze combustion instabilities in a matrixburner. The various tools that exist for analyzing thermoacoustic instabilities areapplied to the matrix burner with multiple flames. The principal goals are to determinethe primary causes of combustion instabilities in the burner and to exploreways of controlling such instabilities in order to prevent damage to the burner.To achieve these goals, the stability map of the burner obtained from measurementsis analyzed. This is followed by the analysis of the aerodynamics of the cold flowusing CFD. Results obtained from CFD are validated with PIV and LDA resultsfrom measurements. Critical are the centerline axial velocity inside the combustionchamber and the recirculation zones on the walls of the combustion chamber andthose between the various slots of the matrix burner.Cold flow simulations are followed by reactive flow simulations for both gaseous andliquid fuels. A detailed atomization model is developed for the liquid fuel case fromexperimental data. Two combustion models, namely, the combined finite rate/eddydissipation model and the finite rate chemistry model are compared in the CFDsimulations of combustion instabilities and validation with measurements are done.The latter is chosen over the former because it accounts for chemistry and it is notnumerically dissipative. Two CFD softwares, Fluent and CFX are also compared todetermine which is better at capturing acoustics. System identification using CFDis used to determine the flame transfer function and the acoustic transfer matrix.This is followed by the use of acoustic forcing and fuel modulation on the primaryand pilot in order to limit the amplitude of the instabilities inside the matrix burnercombustor.The 1D acoustic network is used to determine the longitudinal eigenmodes of thematrix burner. This is followed by the use of 3D finite element method (FEM) andfluid-structure interaction (FSI) to determine whether a coupling exist between thefluid and structure of the matrix burner combustor and vice versa.Finally, Full harmonic analysis is performed for the rectangular combustor and theresults obtained are validated with analytical results. This is followed by the 3Dstructure modal analysis of the full matrix burner test rig.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 186 pp. Englisch.

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Bibliographic details

Title
Simulation and Control of Instationary Reactive Flows in Matrix Burner for Small Power Gas Turbine Applications
Author
James Fayiah Willie
Publisher
Cuvillier, Cuvillier Feb 2012
Publication year
2012
Condition
Neu
Binding
Taschenbuch
Language
English
ISBN 10
3954040018
ISBN 13
9783954040018
Item weight
249 grams
Dimensions
210x148x10 mm

buchversandmimpf2000

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Impressum Thorsten Retsch Buchversand Mimpf2000 Oberölschnitz 16 95517 Emtmannsberg Deutschland Telefon: 09209-2023188 Email: mimpf2000@online.de USt-ID-Nr.: DE 235096871 Wir führen gebrauchte Bücher aus allen Sparten der Literatur

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