Similarity Conversion of Centrifugal Natural Gas Compressors Based on Predictor-Corrector

Abstract Centrifugal compressors are one of the most commonly used equipments powering the long distance natural gas pipeline. In this paper, a similarity conversion method of centrifugal natural gas compressors based on predictor-corrector was proposed. In other words, we used one similarity conversion to predict the key parameter and the other was used as the correction. Compared with the field test data, we found the error of the predicted outlet pressure of the compressor was controlled at about 2% and the outlet temperature fluctuated within 2°C, which could satisfy the engineering application requirements.