چكيده به لاتين
Aerodynamic instability of flow in compressors, especially air compressors, is one of the main problems of compressor designers. Therefore, preventing inconsistencies such as overheating and bulging in compressors is one of the main concerns of their manufacturers, because during these inconsistencies, relatively strong dynamic forces may be applied to the blades and compressor equipment is damaged. The steady-state operating range of axial flow compressors is also limited by the onset of fluid flow instability, which leads to a fluttering phenomenon and fluid instability. The fluid outflow leads to the formation and period of acetal cells at the cavity through the passageway. These cells, due to the lack of energy and the required static pressure required at the annular surface of the period. In addition, instabilities also affect the optimal performance of the compressors and reduce their efficiency; delaying the occurrence of this phenomenon using active control and inactive control can be delayed. One of the most effective methods for the use of reinforcing walls in flow-flow compressors, which is discussed in this thesis.
The simulated compressor in this thesis is a three-floor sub-sound type which has been evaluated in two cases without an improved wall and with a reinforcing wall, and the results have been validated with the experimental results of Dr. Mohammad Akhlaghi, who was reported in 2001
