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Prediction of axial compressor blade vibration by modelling fluid-structure interaction
Thesis (MScEng)-- Stellenbosch University, 2013.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2013
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| _version_ | 1867614140320710656 |
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| access_status_str | Open Access |
| author | Brandsen, Jacobus Daniel |
| author2 | Van der Spuy, S. J. |
| author_browse | Brandsen, Jacobus Daniel Van der Spuy, S. J. |
| author_facet | Van der Spuy, S. J. Brandsen, Jacobus Daniel |
| author_sort | Brandsen, Jacobus Daniel |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MScEng)-- Stellenbosch University, 2013. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/85616 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:47:18.472Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/85616 Prediction of axial compressor blade vibration by modelling fluid-structure interaction Brandsen, Jacobus Daniel Van der Spuy, S. J. Venter, Gerhard Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering. Fluid-structure interaction Self-induced vibration Blades -- Testing Blades -- Vibration Dissertations -- Mechanical and mechatronic engineering Theses -- Mechanical and mechatronic engineering Thesis (MScEng)-- Stellenbosch University, 2013. ENGLISH ABSTRACT: The Council for Scientific and Industrial Research has developed a vibration excitation system. The system is designed to excite the rotor blades of an axial compressor in the specified vibration mode and at the specified frequency. The vibration excitation system was tested on Stellenbosch University’s Rofanco compressor test bench. A two-way staggered fluid-structure interaction (FSI) model was created that was capable of simulating the vibration of the rotor blades excited by the system. The results of the FSI model were verified using available experimental data. It was concluded that the FSI model is able to recreate the vibration excited by the system to within the desired level of accuracy. In addition, the results of the FSI model showed that the vibration excitation system should be able to excite the blades in the selected vibration mode and at the selected frequency provided that the excitation frequency is close the natural frequency of the first bending mode. The results also suggested that a transient computational fluid dynamics model should be sufficient for the prediction of the aerodynamic forces acting on the rotor blades. Furthermore, a one-way staggered FSI model should be adequate for calculating the motions of the blades. AFRIKAANSE OPSOMMING: Die Wetenskaplike en Nywerheidnavorsingsraad het ’n vibrasie-opwekkingstelsel ontwerp om die rotorlemme van ’n aksiaalvloei kompressor in die gespesifiseerde vibrasiemodus en teen die gespesifiseerde frekwensie op te wek. Die vibrasieopwekkingstelsel is met behulp van die Universiteit Stellenbosch se Rofanco kompressortoetsbank getoets. Daarna is ’n tweerigting vloeistof-struktuur-interaksie model geskep om die vibrasie van die rotorlemme, wat deur die stelsel opgewek is, te simuleer. Beskikbare eksperimentele data is gebruik om die resultate van die vloeistof-struktuur-interaksie model te bevestig. Die gevolgtrekking is gemaak dat die model wél die vibrasie van die lemme met die nodige akkuraatheid kan simuleer. Die resultate van die vloeistof-struktuur-interaksie model toon ook dat die stelsel die lemme in die gekose vibrasiemodus en teen die gekose frekwensie behoort te kan opwek, solank die opwekkingsfrekwensie na aan die natuurlike frekwensie van die eerste buigmodus is. Voorts dui die resultate daarop dat ’n berekeningsvloeimeganika model die aërodinamiese laste van die lemme sal kan voorspel. ’n Eenrigting vloeistof-struktuur-interaksie model behoort voldoende te wees om die beweging van die rotorlemme te bereken. 2013-11-24T18:41:24Z 2013-12-13T14:59:10Z 2013-11-24T18:41:24Z 2013-12-13T14:59:10Z 2013-12 Thesis http://hdl.handle.net/10019.1/85616 en_ZA Stellenbosch University xv, 123 p. : ill. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Fluid-structure interaction Self-induced vibration Blades -- Testing Blades -- Vibration Dissertations -- Mechanical and mechatronic engineering Theses -- Mechanical and mechatronic engineering Brandsen, Jacobus Daniel Prediction of axial compressor blade vibration by modelling fluid-structure interaction |
| title | Prediction of axial compressor blade vibration by modelling fluid-structure interaction |
| title_full | Prediction of axial compressor blade vibration by modelling fluid-structure interaction |
| title_fullStr | Prediction of axial compressor blade vibration by modelling fluid-structure interaction |
| title_full_unstemmed | Prediction of axial compressor blade vibration by modelling fluid-structure interaction |
| title_short | Prediction of axial compressor blade vibration by modelling fluid-structure interaction |
| title_sort | prediction of axial compressor blade vibration by modelling fluid structure interaction |
| topic | Fluid-structure interaction Self-induced vibration Blades -- Testing Blades -- Vibration Dissertations -- Mechanical and mechatronic engineering Theses -- Mechanical and mechatronic engineering |
| url | http://hdl.handle.net/10019.1/85616 |
| work_keys_str_mv | AT brandsenjacobusdaniel predictionofaxialcompressorbladevibrationbymodellingfluidstructureinteraction |