investigation of a prototype industrial gas turbine combustor using ...

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Q in heat input [J] Q 1 (8) excitation transition of the OH radical q fuel/air ratio by mass R characteristic radius [m] Re Reynolds number Re 0b post combustion Reynolds number Rec. recirculated mass flow R u universal gas constant [J/(K mol)] r radius [m] r i inner radius [m] r o outer radius [m] S specific entropy [J/(kg K)] S L laminar burning velocity [m/s] S L0 laminar unstretched burning velocity [m/s] S T turbulent flame speed [m/s] St stokes number S w swirl number S w,l local swirl number T temperature [K] ti time at index i [s] t 0 integral time scale [s] t η Kolmogorov time [s] U velocity [m/s] u axial velocity [m/s] u ′ axial rms component of the fluctuating velocity [m/s] u η Kolmogorov velocity [m/s] V volume [m 3 ] v ′ transverse fluctuating velocity [m/s] v ′ vibrational level in the first excited state v ′′ vibrational level in the ground state vol. volume [m 3 ] Wo Wobbe index [MJ/Nm 3 ] W out work out [J] w angular velocity component [m/s] X 2 Π ground electric state in the OH radical x length in the x direction [m] xii
Greek symbols α flame half angle β shift in degrees between vortices position γ Quarl divergent half angle ∆ difference ∆H specific heat release over combustor [J/kg] ∆T heat release over combustor [K] ∆ω refraction angle δ T turbulent brush thickness [m] δ th flame thickness [m] ɛ strain rate [1/s] ɛ cr critical extinction strain rate [1/s] η efficiency or Kolmogorov length scale [m] η comb. combustor efficiency η GT gas turbine efficiency θ loading factor as defined by Lefebvre [s atm 1.75 m 2.75 /kg)] κ Stretch rate [1/s] λ thermal diffusivity [m 2 /s] µ dynamic viscosity [kg/(m s)] ν kinematic viscosity [m 2 /s] ρ density [kg/m 3 ] Σ max surface density at centre of brush [1/m] τ ch chemical time scale [s] τ ch,cr critical chemical time [s] τ l local mixing time [s] τ η turbulent time scale [s] φ equivalence ratio Subscripts C c ch cold characteristic chemical xiii
Page 1 and 2: INVESTIGATION OF A PROTOTYPE INDUST
Page 3 and 4: Populärvetenskaplig Sammanfattning
Page 5 and 6: Abstract In this thesis, the effect
Page 7 and 8: Acknowledgements Without inspiring
Page 9 and 10: List of Papers In this thesis 9 pap
Page 11: NOMENCLATURE A pre exponential fact
Page 15: LIF PFR PIV POD PSR RPL SGT SIT SOT
Page 18 and 19: CONTENTS 4.2 OH-Laser Induced Fluor
Page 20 and 21: LIST OF FIGURES 4.3 Schematic energ
Page 23 and 24: CHAPTER 1 Introduction Throughout h
Page 25 and 26: 1.2. Objectives ature zones of the
Page 27 and 28: 1.5. Outline of thesis setup to inv
Page 29 and 30: CHAPTER 2 Gas Turbine Combustor To
Page 31 and 32: Figure 2.2: Temperature entropy dia
Page 33 and 34: 2.1. The combustor Figure 2.3: Ther
Page 35 and 36: 2.1. The combustor Figure 2.5: Cros
Page 37 and 38: 2.1. The combustor Figure 2.7: Illu
Page 39 and 40: CHAPTER 3 Experimental setups The g
Page 41 and 42: 3.2. The atmospheric full burner se
Page 43 and 44: 3.2. The atmospheric full burner se
Page 45 and 46: 3.3. The pressurized central body b
Page 47 and 48: 3.3. The pressurized central body b
Page 49 and 50: 3.4. The pressurized full burner se
Page 51 and 52: CHAPTER 4 Diagnostic methods Severa
Page 53 and 54: 4.1. Particle Image Velocimetry the
Page 55 and 56: 4.2. OH-Laser Induced Fluorescence
Page 57 and 58: 4.3. Schlieren imaging beam between
Page 59 and 60: CHAPTER 5 Combustor theory - Combus
Page 61 and 62: 5.1. The Borghi diagram The corresp
Page 63 and 64:
5.2. Combustion chemistry Changing
Page 65 and 66:
5.2. Combustion chemistry Figure 5.
Page 67 and 68:
Page 69 and 70:
5.2. Combustion chemistry reactions
Page 71 and 72:
Page 73 and 74:
5.3. Chemistry and fluid dynamics c
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
5.4. Fluid dynamics in a swirl comb
Page 83 and 84:
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Page 87 and 88:
CHAPTER 6 Concluding remarks This t
Page 89 and 90:
ecirculation zone for the same sett
Page 91 and 92:
CHAPTER 7 Summary of publications P
Page 93 and 94:
Paper III: Investigation of a Premi
Page 95 and 96:
Paper VI: CFD Investigation of Swir
Page 97 and 98:
Paper IX: Experimental Investigatio
Page 99:
Appendices 77
Page 102 and 103:
A. Flow visualization using Proper
Page 104 and 105:
Page 106 and 107:
Page 109 and 110:
Bibliography [1] Genrup, M., and Th
Page 111 and 112:
[17] Syred, N., and Beér, J. M., 1
Page 113 and 114:
[37] Samimy, M., and Lele, S. K., 1
Page 115 and 116:
[58] DARS - Software for Digital An
Page 117 and 118:
like combustor: Experimental result
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