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Tingcheng Wu

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Articles

Leakage and Cavity Pressures in an Interlocking Labyrinth Gas Seal: Measurements Versus Predictions

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By Luis San Andrés, Fellow ASME, Tingcheng Wu, Jose Barajas-Rivera
| Mechanical Engineering Magazine Verified
Childs, D. W. , 1993, “ Rotordynamic Models for Annular Gas Seals,” Turbomachinery Rotordynamics: Phenomena, Modeling, and Analysis, Wiley, New York, Chap. 5. Benckert, H. , and Wachter, J. , 1980, “ Flow Induced Spring Coefficients of Labyrinth Seals for Application in Rotor Dynamics,” Workshop on Rotordynamic Instability Problems in High-Performance Turbomachinery, Texas A&M University, College Station, May 12–14, pp. 189–212. Childs, D. W. , Elrod, D. A. , and Hale, K.
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Pump Grooved Seals: A Computational Fluid Dynamics Approach to Improve Bulk-Flow Model Predictions

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By Tingcheng Wu, Luis San Andrés
| Mechanical Engineering Magazine Verified
Hirs, G. G. , 1973, “ A Bulk-Flow Theory for Turbulence in Lubricant Films,” ASME J. Lubr. Tech, 95(2), pp. 137–145. [CrossRef] Nordmann, R. , Dietzen, F. , and Weiser, H. , 1989, “ Calculation of Rotordynamic Coefficients and Leakage for Annular Gas Seals by Means of Finite Difference Techniques,” ASME J. Trib., 111(3), pp. 545–552. [CrossRef] Florjancic, S. , and McCloskey, T.
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Leakage and Dynamic Force Coefficients for Two Labyrinth Gas Seals: Teeth-on-Stator and Interlocking Teeth Configurations. A Computational Fluid Dynamics Approach to Their Performance

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By Turbomachinery Laboratory, Luis San Andrés, Fellow ASME, Tingcheng Wu
| Mechanical Engineering Magazine Verified
Labyrinth gas seals (LSs) commonly used in turbomachines reduce secondary flow leakage. Conventional see-through labyrinth seal designs include either all teeth-on-stator (TOS) or all teeth-on-rotor (TOR). Experience shows that an interlocking labyrinth seal (ILS), with teeth on both stator and rotor, reduces gas leakage by up to 30% compared to the conventional see-through designs. However, field data for ILS rotordynamic characteristics are still vague and scarce in the literature.
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