...Zhigang Li; Zihan Zhang; Jun Li Damper seals (such as pocket damper seal (PDS), hole-pattern/honeycomb damper seals) and swirl brakes have been commonly used for many years as a solution for the rotor vibration instability in multiple-stage centrifugal compressor. However, there are few literatures...

...Jun Li; Zhigang Li; Zhenping Feng The numerical approach using the multifrequency one-dimensional whirling orbit model and Reynolds-averaged Navier-Stokes (RANS) solution was proposed for prediction of rotordynamic coefficients of pocket damper seal (PDS). By conducting the multiple frequencies one...