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 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 displace...
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| Format: | Article |
| Language: | English |
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Sumy State University
2022-06-01
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| Series: | Журнал інженерних наук |
| Subjects: | |
| Online Access: | http://jes.sumdu.edu.ua/wp-content/uploads/2022/08/jes_9_1_2022_D20-D29.pdf |
| _version_ | 1828272251314634752 |
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| author | Zahorulko A. Borsuk S. Peczkis G. |
| author_facet | Zahorulko A. Borsuk S. Peczkis G. |
| author_sort | Zahorulko A. |
| collection | DOAJ |
| description | 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 cross-coupled 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. |
| first_indexed | 2024-04-13T06:04:02Z |
| format | Article |
| id | doaj.art-2cdd2a4518c846a49d53067c987b3e77 |
| institution | Directory Open Access Journal |
| issn | 2312-2498 2414-9381 |
| language | English |
| last_indexed | 2024-04-13T06:04:02Z |
| publishDate | 2022-06-01 |
| publisher | Sumy State University |
| record_format | Article |
| series | Журнал інженерних наук |
| spelling | doaj.art-2cdd2a4518c846a49d53067c987b3e772022-12-22T02:59:20ZengSumy State UniversityЖурнал інженерних наук2312-24982414-93812022-06-0191D20D2910.21272/jes.2022.9(1).d4Computational Analysis of Sealing and Stability of a Deformable Floating and Fixed Rings of an Annular SealZahorulko A.0https://orcid.org/0000-0002-6198-4643Borsuk S.1https://orcid.org/0000-0002-1808-0008Peczkis G.2https://orcid.org/0000-0002-4856-3123Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, UkraineSumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, UkraineSilesian University of Technology, 2A, Akademicka St., 44-100 Gliwice, PolandSolving 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 cross-coupled 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.http://jes.sumdu.edu.ua/wp-content/uploads/2022/08/jes_9_1_2022_D20-D29.pdfdeformable annular sealclearancehydroelastic problemsealingstability |
| spellingShingle | Zahorulko A. Borsuk S. Peczkis G. Computational Analysis of Sealing and Stability of a Deformable Floating and Fixed Rings of an Annular Seal Журнал інженерних наук deformable annular seal clearance hydroelastic problem sealing stability |
| title | Computational Analysis of Sealing and Stability of a Deformable Floating and Fixed Rings of an Annular Seal |
| title_full | Computational Analysis of Sealing and Stability of a Deformable Floating and Fixed Rings of an Annular Seal |
| title_fullStr | Computational Analysis of Sealing and Stability of a Deformable Floating and Fixed Rings of an Annular Seal |
| title_full_unstemmed | Computational Analysis of Sealing and Stability of a Deformable Floating and Fixed Rings of an Annular Seal |
| title_short | Computational Analysis of Sealing and Stability of a Deformable Floating and Fixed Rings of an Annular Seal |
| title_sort | computational analysis of sealing and stability of a deformable floating and fixed rings of an annular seal |
| topic | deformable annular seal clearance hydroelastic problem sealing stability |
| url | http://jes.sumdu.edu.ua/wp-content/uploads/2022/08/jes_9_1_2022_D20-D29.pdf |
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