Pre-mixed and Diffusion Flames Assessment using CFD Tool for Natural Gas and Biogas Fuels in Gas Turbine Combustion Chambers

摘要

In the past few years, with the development of advanced numerical computational codes, numerical simulation became a promising option to develop and improve technology in different fields. The results obtained through simulations are used to gather important information during the design phase or optimization of industrial equipment. Its employment generates reliable results at low cost due to the reduced number of experiments as well as the opportunity to develop new products and perform many simulations before construction of a new product. With the recent energy shortage and the reduction of the fossils fuel reserves, the industrial sector starts to develop more compact equipment that can be fed with different fuels, attending a wide range of heat and power demand. The aim of the work is to assess thermal-aerodynamics and emission using numerical simulation (Computational Fluid Dynamics CFD) of a 600kW simple cycle gas turbine combustion chamber. The thermal-aerodynamics assessment of the combustion chamber will be presented, showing the profiles of temperature and emissions, when used the premixed and diffusion flame for the natural gas and biogas fuels, respectively.