A fully compressible, two-dimensional axisymmetric, turbulent Navier-Stokes code using the finite-volume discretization approach was utilized to obtain an enhanced understanding of the effects of rub-grooves in straight-through, abradable labyrinth seals. The high-Re form of the k-ε turbulence model was used. The code was first validated against measurements of straight-through honeycomb labyrinths, and accurate results were obtained. It was found that in most of the cases considered (tooth tip outside of its rub groove), the presence of rub-grooves increases the leakage, except for the case of the large pre-rub clearance and narrow rub-groove width. The presence of the large- or the intermediate-width rub-grooves allows the rub-groove depth to exert a fairly large effect on the leakage, especially for the smallest pre-rub radial clearance. Further, the presence of a narrow rub-groove with the smallest pre-rub radial clearance gives a dramatic effect on the streamwise (i.e., cavity-to-cavity) variation in overall flow patten.
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October 2004
Research Papers
Rub-Groove Width and Depth Effects on Flow Predictions for Straight-Through Labyrinth Seals
David L. Rhode, Professor,
David L. Rhode, Professor
Mechanical Engineering Department, Texas A&M University, College Station, TX 77843-3123
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Richard G. Adams
Richard G. Adams
Texaco E & P, Inc., New Orleans, LA 70130
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David L. Rhode, Professor
Mechanical Engineering Department, Texas A&M University, College Station, TX 77843-3123
Richard G. Adams
Texaco E & P, Inc., New Orleans, LA 70130
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division January 3, 2002; revised manuscript received March 16, 2004. Associate Editor: S. Wu.
J. Tribol. Oct 2004, 126(4): 781-787 (7 pages)
Published Online: November 9, 2004
Article history
Received:
January 3, 2002
Revised:
March 16, 2004
Online:
November 9, 2004
Citation
Rhode, D. L., and Adams, R. G. (November 9, 2004). "Rub-Groove Width and Depth Effects on Flow Predictions for Straight-Through Labyrinth Seals ." ASME. J. Tribol. October 2004; 126(4): 781–787. https://doi.org/10.1115/1.1760555
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