The Impact of Hole Depth on the Rotordynamic and Leakage Characteristics of Hole-Pattern-Stator Gas Annular Seals Academic Article uri icon

abstract

  • Test results are presented for rotordynamic characteristics of hole-pattern-stator annular gas seals at a 70 bar supply pressures with a running speed of 20,200rpm. Leakage results are presented for these conditions and the additional speeds: 10,200 and 15,300rpm. Hole-depth is the principal test variable of interest. Most published annular test data for these seals have a hole diameter of 3.175mm and a hole depth of 3.302mm. For this work, with the 3.175mm hole diameter, additional results are presented for shallow (1.905mm) and deep (6.604mm) hole depths. Test results show a pronounced dependence of leakage and rotordynamic behavior on hole depth. Test results show much better leakage performance for the shallow-hole-depth seal in both leakage and rotordynamic performance. Compressor manufacturers and users will need to decide whether this observed performance improvement is worth trying in real machines.

published proceedings

  • JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME

author list (cited authors)

  • Childs, D. W., Arthur, S., & Mehta, N. J.

citation count

  • 10

complete list of authors

  • Childs, Dara W||Arthur, Stephen||Mehta, Naitik J

publication date

  • April 2014