“Predicting, Understanding and Avoiding the Ekofisk Rotor Instability Forty Years Later,”
An examination restricted only to the centrifugal compressor conﬁguration as based on 1970’s aerodynamic technology ignores the advances made in impeller and compressor design. The current rotor conﬁguration process includes factors to optimize both aerodynamic performance and rotordynamic behavior which tend to work toward opposing design goals. To complete this cursory review of the impact of compressor design improvements, the Ekoﬁsk reinjection compressor is reconﬁgured as would be selected with today’s methods and capabilities. The rotordynamic behavior of the newly designed machine is compared against the original.