抄録
Large pulsations cause engineering problems such as piping vibrations, which may impede plant operations. Therefore, a pulsation study should be carried out during the design stage and the results should be incorporated into the piping design in order to minimize pulsations. This paper proposes a method of digital simulation, which takes the dynamic interaction between the reciprocating compressors and the piping systems into account, so as to accurately predict pulsations in a piping system. The digital simulation method is composed of two interactive models: a Compressor Simulation Model for calculating the pressure and temperature in the cylinder, etc., and a Piping Model for calculating pulsations by applying the modal analysis method. Comparisons between the calculations and experimental or field data have proven that accurate predictions of pulsations can be made using the digital simulation method proposed in this report.
