{"product_id":"simulation-and-control-of-instationary-reactive-flows-in-matrix-burner-for-small-power-gas-turbine-applications-von-james-fayiah-willie","title":"Simulation and Control of Instationary Reactive Flows in Matrix Burner for Small Power Gas Turbine Applications","description":"\u003cp\u003eThe main objective of this thesis is to analyze combustion instabilities in a matrix\u003c\/p\u003e\u003cp\u003eburner. The various tools that exist for analyzing thermoacoustic instabilities are\u003c\/p\u003e\u003cp\u003eapplied to the matrix burner with multiple flames. The principal goals are to determine\u003c\/p\u003e\u003cp\u003ethe primary causes of combustion instabilities in the burner and to explore\u003c\/p\u003e\u003cp\u003eways of controlling such instabilities in order to prevent damage to the burner.\u003c\/p\u003e\u003cp\u003eTo achieve these goals, the stability map of the burner obtained from measurements\u003c\/p\u003e\u003cp\u003eis analyzed. This is followed by the analysis of the aerodynamics of the cold flow\u003c\/p\u003e\u003cp\u003eusing CFD. Results obtained from CFD are validated with PIV and LDA results\u003c\/p\u003e\u003cp\u003efrom measurements. Critical are the centerline axial velocity inside the combustion\u003c\/p\u003e\u003cp\u003echamber and the recirculation zones on the walls of the combustion chamber and\u003c\/p\u003e\u003cp\u003ethose between the various slots of the matrix burner.\u003c\/p\u003e\u003cp\u003eCold flow simulations are followed by reactive flow simulations for both gaseous and\u003c\/p\u003e\u003cp\u003eliquid fuels. A detailed atomization model is developed for the liquid fuel case from\u003c\/p\u003e\u003cp\u003eexperimental data. Two combustion models, namely, the combined finite rate\/eddy\u003c\/p\u003e\u003cp\u003edissipation model and the finite rate chemistry model are compared in the CFD\u003c\/p\u003e\u003cp\u003esimulations of combustion instabilities and validation with measurements are done.\u003c\/p\u003e\u003cp\u003eThe latter is chosen over the former because it accounts for chemistry and it is not\u003c\/p\u003e\u003cp\u003enumerically dissipative. Two CFD softwares, Fluent and CFX are also compared to\u003c\/p\u003e\u003cp\u003edetermine which is better at capturing acoustics. System identification using CFD\u003c\/p\u003e\u003cp\u003eis used to determine the flame transfer function and the acoustic transfer matrix.\u003c\/p\u003e\u003cp\u003eThis is followed by the use of acoustic forcing and fuel modulation on the primary\u003c\/p\u003e\u003cp\u003eand pilot in order to limit the amplitude of the instabilities inside the matrix burner\u003c\/p\u003e\u003cp\u003ecombustor.\u003c\/p\u003e\u003cp\u003eThe 1D acoustic network is used to determine the longitudinal eigenmodes of the\u003c\/p\u003e\u003cp\u003ematrix burner. This is followed by the use of 3D finite element method (FEM) and\u003c\/p\u003e\u003cp\u003efluid-structure interaction (FSI) to determine whether a coupling exist between the\u003c\/p\u003e\u003cp\u003efluid and structure of the matrix burner combustor and vice versa.\u003c\/p\u003e\u003cp\u003eFinally, Full harmonic analysis is performed for the rectangular combustor and the\u003c\/p\u003e\u003cp\u003eresults obtained are validated with analytical results. This is followed by the 3D\u003c\/p\u003e\u003cp\u003estructure modal analysis of the full matrix burner test rig.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783954040018\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783954040018","offer_id":40125953114205,"sku":"9783954040018","price":36.55,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/6ae42ef1-d2dd-42f0-aff3-ddace6d408b7.jpg?v=1782540776","url":"https:\/\/shop.autorenwelt.de\/products\/simulation-and-control-of-instationary-reactive-flows-in-matrix-burner-for-small-power-gas-turbine-applications-von-james-fayiah-willie","provider":"Autorenwelt Shop","version":"1.0","type":"link"}