減圧吸気系のある圧縮機のサージング挙動に関する研究

概要

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A decompression suction system is often installed in front of a compressor to reduce the compressor drive power in the case of large compressor test rigs. In such cases the surge behavior is different from that in the absence of a decompression facility. This paper reports numerical results by an extended analysis based on Greitzer's model and compares to surge experimental results of an axial compressor with the decompression chamber, and shows that a critical resistance coefficient dependent on the suction throttle setting divides the surge patterns into two groups: one is limited to the maximum period with rather high frequency. and the other is similar to the relaxation type with low frequency. Further, an explanation is given for the difference in behavior between the surge in the installation with a decompression chamber and the one with no chamber.
1991-05-25