Numerical study on the combustion process in a gas turbine combustor with different reference velocities
نویسندگان
چکیده
Abstract The mixing and combustion processes under different reference velocities in a gas turbine combustor were numerically investigated using the Flamelet Generated Manifold (FGM) model based on Reynolds Averaged Navier–Stokes (RANS) method. flow fields show strong self-similarity except slow auto-ignition layer between fuel-rich product fresh air upstream of flame stabilization position. time-scale analysis was carried out to understand modes inside combustor. In general, residence time fuel-mixture is much longer than both chemical scale scale. Thus, properties each sub-zone dominated by mean structures. Furthermore, process exhibits mixing-controlled feature total. However, partially premixed still appears base. Most fuel found be oxidized primary zone intermediate zone; however, oxidization reactions also play non-negligible role whole process. Finally, sketch map space mixture fraction efficiency proposed experiences mixture.
منابع مشابه
3-D Numerical Simulation of Gas Turbine Combustor
This paper presents a numerical solution for a changing combustor geometry. The effects of the geometric change on the main parameters of the chamber are considered. For this purpose the original geometry and the new one are simulated numerically by a 3-D CFD code and the results are compared. Finally, comments are presented regarding this change. A model is used for turbulence modeling and a...
متن کامل3-D Numerical Simulation of Gas Turbine Combustor
This paper presents a numerical solution for a changing combustor geometry. The effects of the geometric change on the main parameters of the chamber are considered. For this purpose the original geometry and the new one are simulated numerically by a 3-D CFD code and the results are compared. Finally, comments are presented regarding this change. A model is used for turbulence modeling and a...
متن کاملNumerical Simulation of a Low Emissions Gas Turbine Combustor Using KIVA-II Part II: Quick-Quench/Lean-Combustion Zones Analysis
SUMMARY This is the second part of the numerical investigation on a low emissions staged turbine combustor (STC) using a modified version of the KIVA-II code. The main focus of this study is the numerical analysis of the reacting fluid flow and heat transfer inside the quick-quench/lean-combustion (QQ/LC) zones. In the QQ zone, cool dilution air was injected into the hot mixture through eight 4...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Advances in Aerodynamics
سال: 2023
ISSN: ['2524-6992']
DOI: https://doi.org/10.1186/s42774-023-00154-0