Akademik Veri Yönetim Sistemi
BULGARIAN CHEMICAL COMMUNICATIONS, cilt.47, ss.231-238, 2015 (SCI-Expanded, Scopus)
In this paper, a numerical simulation was conducted using FLUENT CFD package to investigate injection effects of axial and swirl flow inside the annular combustion chamber with wall jet. The flow was considered as threedimensional, steady, turbulent, incompressible, viscid, and two-phase and turbulence models including RNG (k-epsilon) and the Reynolds stress model were applied. In order to evaluate the applied numerical method, the results obtained in the reacting combustion chamber were compared with experimental ones. The effects of different parameters inside the combustion chamber including air-fuel ratio, swirl mass flow rate, fuel spray angle and swirl number were studied and optimal values for some of these values were obtained. The results showed that increasing the swirl air flow rate in the inlet area of the combustion chamber stretches the swirl area toward the fuel injection nozzles and causes initiation of combustion near the chamber inlet. The increase of the air-fuel ratio results in increasing the velocities and uniform temperature profiles in the outlet chamber. Increasing swirl number and decreasing fuel spray angle also reduces wall temperature. Optimal values for Sauter mean diameter and fuel spray angle were also determined.