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CONVERGENCE OF GAS PULSATION SIMULATIONS WHEN COMBINING TIME AND FREQUENCY DOMAINS ITERATIVELY.

Author(s) : KIM J., SOEDEL W.

Summary

IN MODELS WHICH COMBINE BOTH TIME AND FREQUENCY DOMAINS ITERATIVELY, THE THERMODYNAMIC PROCESS OF COMPRESSION AND VALVE FLOW IS SOLVED NUMERICALLY IN TIME UTILIZING IN ITERATIVE STEPS IMPROVED ESTIMATES OF SUCTION AND DISCHARGE CAVITY GAS PULSATIONS, WHICH ARE OBTAINED FROM FREQUENCY DOMAIN THE PROCESS HAS SHOWN OCCASIONAL CONVERGENCE PROBLEMS ON THE SUCTION SIDE IN PART DUE TO THE INCREASED SENSITIVITY OF VALVE MOTION TO PRESSURE FLUCTUATIONS AT VALVE CLOSING TIME. THE PAPER SHOWS HOW ITERATIONS CAN BE SLOWED DOWN FOR SATISFACTORY CONVERGENCE BEHAVIOUR AND PRESENTS A CASE STUDY TO ILLUSTRATE THE POINT.

Details

  • Original title: CONVERGENCE OF GAS PULSATION SIMULATIONS WHEN COMBINING TIME AND FREQUENCY DOMAINS ITERATIVELY.
  • Record ID : 1991-2092
  • Languages: English
  • Publication date: 1990/07/17
  • Source: Source: Proc. 1990 int. Compress. Eng. Conf., Purdue Univ.
    vol. 2; 641-646; 6 fig.; 6 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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