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Title | Computational analysis of sealing and stability of a deformable floating and fixed rings of an annular seal |
Authors |
Zahorulko, Andrii Vasylovych
Borsuk, S. Peczkis, G. |
ORCID |
http://orcid.org/0000-0002-6198-4643 |
Keywords |
deformable annular seal clearance hydroelastic problem sealing stability |
Type | Article |
Date of Issue | 2022 |
URI | https://essuir.sumdu.edu.ua/handle/123456789/88996 |
Publisher | Sumy State University |
License | Creative Commons Attribution 4.0 International License |
Citation | Zahorulko, A., Borsuk, S., Peczkis, G. (2022). Computational analysis of sealing and stability of a deformable floating and fixed rings of an annular seal. Journal of Engineering Sciences, Vol. 9(1), pp. D20-D29, doi: 10.21272/jes.2022.9(1).d4 |
Abstract |
Solving the hydroelastic problem by using Ansys System Coupling (Mechanical and CFX) for floating
and fixed rings of a deformable annular seal made it possible to analyze the influence of the cylindrical shell
thickness, the inlet and outlet edge dimensions, inlet pressure, and shaft radial displacement on the hydrostatic
pressure distribution and the clearance value on length, leakages, stress-strain state, and radial force. The analysis of
static stability at an inlet pressure of 10 MPa for the basic seal design showed that the static radial force in the range
of radial movements of the shaft from 0 to 50% of the clearance is centering, even though the inlet part of the seal
clearance has a confusor, and the outlet part has diffuser form. However, the dynamic coefficients of the fixed sealing
ring have a negative value of direct stiffness but positive values of direct and cross-coupled damping and crosscoupled stiffness. Verifying computational 2D and 3D models with experimental results from the literature showed
that the maximum relative error does not exceed 10.7% for the hydrostatic pressure, 18% for the clearance, and 8.6%
for the leakage value. Simultaneously, according to the trend, all calculated dependencies are identical to the
experimental results. |
Appears in Collections: |
Journal of Engineering Sciences / Журнал інженерних наук |
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