A method is proposed for computations of rotordynamic coefficients of deliberately roughened stator gas annular seals using Computational Fluid Dynamics (CFD). The method is based on a transient analysis with deforming mesh. Frequency dependent direct and cross-coupled rotordynamic coefficients are determined as a response to an assigned rotor surface periodic motion. The obtained numerical results are found to be in good agreement with the available test data and one-dimensional tool predictions. The method can be used as a research tool, or as a virtual annular seal test rig for seal design and optimization.
- Tribology Division
Numerical Modeling of Rotordynamic Coefficients for Deliberately Roughened Stator Gas Annular Seals
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Chochua, G, & Soulas, TA. "Numerical Modeling of Rotordynamic Coefficients for Deliberately Roughened Stator Gas Annular Seals." Proceedings of the STLE/ASME 2006 International Joint Tribology Conference. Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics. San Antonio, Texas, USA. October 23–25, 2006. pp. 335-341. ASME. https://doi.org/10.1115/IJTC2006-12049
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