Abstract
Pressure pulsations excited by centrifugal compressors or blowers at blade-passing frequency may cause severe noise and vibrations in piping systems. Therefore, the establishment of a practical evaluation method for pressure pulsations is desired so as to prevent such problems. In this study, one dimensional excitation source model in a compressor was proposed based on the equation of motion. It is shown that the relation between the maximum pressure amplitude in piping systems and the location of an excitation source under resonant condition can be evaluated by introducing the equivalent resistance of a compressor and piping systems.
