Computational Analysis of Sealing and Stability of a Deformable Floating and Fixed Rings of an Annular Seal

Solving the hydroelastic problem by using Ansys System Coupling (Mechanical and CFX) for floating fixed rings of a deformable annular seal made it possible to analyze influence cylindrical shell thickness, inlet outlet edge dimensions, pressure, shaft radial displacement on hydrostatic pressure distribution clearance value length, leakages, stress-strain state, force. The analysis static stability at an 10 MPa basic design showed that force in range movements from 0 50% is centering, even though part has confusor, diffuser form. However, dynamic coefficients sealing ring have negative direct stiffness but positive values cross-coupled damping stiffness. Verifying computational 2D 3D models with experimental results literature maximum relative error does not exceed 10.7% 18% clearance, 8.6% leakage value. Simultaneously, according trend, all calculated dependencies are identical results.