الفهرس | Only 14 pages are availabe for public view |
Abstract In this mathematical work, we provide a prediction and simulation of the behavior of the axial compressor system under the circumstance of increasing and recycling the stall and surge by using numerical analysis. The Moore-Greitzer model was programmed and the influence of the compression system parameters (compressor length, the initial value of stall amplitude, velocity parameter B) on the surge and rotating stall was investigated. The results were compared with published data for the validating of the code. Also, was developed a mathematical program to include the inlet distortion model to study the effect of inlet distortion on the surge and rotating stall behavior. The results show that the higher values of velocity parameter B lead the-system to surge cycles, while its lower values leads it to rotate stall region. Smaller values of compressor length cause a large excursion in amplitude of the stall. By increasing the initial value of the amplitude of stall it takes a short time to reach the steady state. The small value of inlet distortion does not change the stall behavior while the largest value of inlet distortion leads the system to entering to modified surge cycles. |