Essays about: "Laminar Flame Speed"

Showing result 1 - 5 of 10 essays containing the words Laminar Flame Speed.

1. 1. Geometrical Improvement of Fuel Nozzle Locations in the SGT-750 Gas Turbine : An investigation into fuel-air mixing in main channels 1 & 2

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

   Author : Aryan Delir; [2022]
   Keywords : gas turbine engines; turbofan; combustion; SGT-750; flashback; hydrogen; natural gas; premixing; fuel-air mixing; computational fluid dynamics; CFD; turbulence modelling; NOx emission; lean premixed mixture;

   Abstract : This study was conducted on SGT-750, which utilizes can type fourth generation DLE burner, developed at Siemens Energy AB, in Finspång, Sweden. The aim of this study is to obtain a flat fuel profile at the outlet of main channel 1 and main channel 2, demonstrating a proper mixing of fuel and air in the main channels leading to reducing local high-temperature points, and thus, reducing thermal NOx emissions. READ MORE

3. 2. LES modelling of spray combustion

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Arvid Åkerblom; [2021]
   Keywords : Gas Turbine; CFD; Large Eddy Simulation; Lagrangian Particle Tracking; Chemical Kinetics; Reaction Mechanism; Combustion; OpenFOAM; CHEMKIN; Technology and Engineering;

   Abstract : Computational fluid dynamics is a powerful method for understanding the flow and combustion that occurs inside aircraft engines and will be a key tool in the transition from conventional fossil-based fuel to sustainable alternatives. Because conventional fuels have been more widely researched, an attempt at simulating the combustion of alternative fuels should be preceded by the development of a method that is capable of accurately simulating the combustion of a conventional fuel. READ MORE

4. 3. A comparison of the multicomponent model and the mixture averaged approximation

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

   Author : Martin Torstensson; [2014]
   Keywords : Combustion physics; computational physics; multicomponent model; mixture averaged approximation; Physics and Astronomy;

   Abstract : In this work the major models for calculating diffusion in simulations of a laminar premixed hydrogen flame, the mixture averaged approximation and the multicomponent model, are explained and compared. This is done in order to see if the accuracy gained in implementing the multicomponent model is enough to warrant the increased workload the transition will cause. READ MORE

5. 4. Network Modeling Application to Laminar Flame Speed and NOx Prediction in Industrial Gas Turbines

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära; Linköpings universitet/Tekniska högskolan

   Author : Seyedeh Sepideh Marashi; [2013]
   Keywords : Gas turbine; combustion; NOx; emissions; laminar flame speed; burning velocity; hydrogen; network modeling; reactor network modeling;

   Abstract : The arising environmental concerns make emission reduction from combustion devices one of the greatest challenges of the century. Modern dry low-NOx emission combustion systems often operate under lean premixed turbulent conditions. READ MORE

6. 5. Determination of Laminar Burning Velocities of Nitro-methane using Heat Flux Method

   University essay from Lunds universitet/Fysiska institutionen

   Author : Muhammad Mehboob; [2013]
   Keywords : Combustion Physics; Physics and Astronomy;

   Abstract : In this paper the laminar burning velocities of nitromethane, ethanol and nitromethane-ethanol mixtures has been determined by using heat flux method. The laminar burning velocity of ethanol was measured at atmospheric pressure, initial temperatures range 298-358 K and equivalence ratio 0.7-1.6. READ MORE