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DEVELOPMENT OF AN ULTRA-HIGH EFFICIENCY GAS TURBINE ENGINE (UHEGT

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DEVELOPMENT OF AN ULTRA-HIGH EFFICIENCY GAS TURBINE ENGINE (UHEGT ( development-an-ultra-high-efficiency-gas-turbine-engine-uheg )

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III.2.2. III.2.3. III.2.4. Phase II: Turbine Cycle and Flow Path Design......................................30 Phase III: UHEGT Simulation and Analysis ..........................................31 Phase IV: Dynamic Simulation of the Engine........................................31 CHAPTER IV DESIGN AND SIMULATION OF A SINGLE STAGE SAMPLE TURBINE WITH STATOR INTERNAL COMBUSTION ........................................33 IV.1. UHEGT Combustion System: Important Design Parameters ..........................33 IV .1.1. IV .1.2. IV .1.3. Controlled Fuel and Air Mixing by Vortex Generation .........................33 Flame Stability ........................................................................................ 36 Temperature Distribution at Rotor Inlet .................................................39 IV.2. Single Stage Turbine Design............................................................................39 IV.3. Injector Design and Geometry .........................................................................40 IV .3.1. IV .3.2. IV .3.3. Injector Configuration 1 .........................................................................41 Injector Configuration 2 .........................................................................44 Injector Configuration 3 .........................................................................45 IV .4. IV .5. IV .6. Mesh Generation ..............................................................................................47 Numerical Method and Boundary Conditions .................................................50 Results and Discussion.....................................................................................52 IV .6.1. IV .6.2. IV .6.3. IV .6.4. Injector Configuration 1 .........................................................................52 Injector Configuration 2 .........................................................................62 Injector Configuration 3 .........................................................................64 Further Discussion on Different Injector Configurations.......................70 CHAPTER V DESIGN AND SIMULATION OF THE MULTISTAGE UHEGT ....76 V.1. Turbine Stage Design .......................................................................................76 V.2. Cycle Design ....................................................................................................79 V.3. Turbine Geometry and Blade Profiling............................................................83 V.4. Results and Discussion.....................................................................................84 V.5. Reducing the Stator Blade Surface Temperature .............................................97 V.5.1. Introduction and Methodology...................................................................97 V.5.2 Results and Discussion.............................................................................102 CHAPTER VI ENGINE SIMULATION IN DESIGN, OFF-DESIGN AND DYNAMIC OPERATION .........................................................................................113 VI.1. Introduction ....................................................................................................113 VI.2. Theoretical Background .................................................................................114 VI.2.1. The Engine Structure ............................................................................114 VI.2.2. Governing Equations ............................................................................116 VI.2.3. Numerical Approach.............................................................................119 VI.2.4. Engine Components and Simulation Schematics .................................120 VI.3. Results and Discussion...................................................................................127 VI.3.1. Sinusoidal Fuel Schedule......................................................................127 xii

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