Investigating the Effects of Turbulence and Premixed Air/Methane Fuel Combustion on the Performance of a Miniature Gas Turbine-Computer Numerical Simulation

摘要

Stationary gas turbines used in industrial applications can be run using premixed fuel/air systems. Though premixed fuel/air systems are widely established, research continues to further develop the efficiency of such engines. This paper uses computer numerical simulation to analyze the effects of the premixed fuel/air composition on the performance of a miniature gas turbine. The composition of the fuel/air premixture was varied and results were recorded and compared. Effects on turbulence intensity in the combustion zone for various premixed fuel/air compositions were monitored and compared. The analysis has shown that performance can be optimized with an optimal fuel/air premixture, and that this optimal performance coincides with peak turbulence intensity at the combustion chamber downstream of the premixed fuel/ air injectors.