Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model
A previously developed turbine modelling methodology, requiring minimal blade passage information, produced a customizable turbine stage component. This stage-by-stage turbine nozzlemodel component was derived from the synthesis of classical turbine theory and classical nozzle theory enabling the co...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Mechanical Engineering
2020
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613189173149696 |
|---|---|
| access_status_str | Open Access |
| author | Marx, Alton Cadle |
| author2 | Fuls, Wim |
| author_browse | Fuls, Wim Marx, Alton Cadle |
| author_facet | Fuls, Wim Marx, Alton Cadle |
| author_sort | Marx, Alton Cadle |
| collection | Thesis |
| description | A previously developed turbine modelling methodology, requiring minimal blade passage information, produced a customizable turbine stage component. This stage-by-stage turbine nozzlemodel component was derived from the synthesis of classical turbine theory and classical nozzle theory enabling the component to accurately model a turbine stage. Utilizing Flownex, a thermohydraulic network solver, the turbine stage component can be expanded to accurately model any arrangement and category of turbine. This project focused on incorporating turbine blade passage geometrical information, as it relates to the turbine specific loss coefficients, into the turbine stage component to allow for the development of turbine models capable of predicting turbine performance for various structural changes, anomalies and operating conditions. The development of turbine loss coefficient algorithms as they relate to specific blade geometry data clusters required the investigation of several turbine loss calculation methodologies. A stage-by-stage turbine nozzle-model incorporating turbine loss coefficient algorithms was developed and validated against real turbine test cases obtained from literature. Several turbine models were developed using the loss coefficient governed turbine stage component illustrating its array of capabilities. The incorporation of the turbine loss coefficient algorithms clearly illustrates the correlation between turbine performance deviations and changes in specific blade geometry data clusters. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/31619 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:11.035Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Department of Mechanical Engineering |
| publisherStr | Department of Mechanical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/31619 Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model Marx, Alton Cadle Fuls, Wim Turbine loss coefficient Flownex Stage-by-stage turbine nozzle-model Loss coefficient algorithm A previously developed turbine modelling methodology, requiring minimal blade passage information, produced a customizable turbine stage component. This stage-by-stage turbine nozzlemodel component was derived from the synthesis of classical turbine theory and classical nozzle theory enabling the component to accurately model a turbine stage. Utilizing Flownex, a thermohydraulic network solver, the turbine stage component can be expanded to accurately model any arrangement and category of turbine. This project focused on incorporating turbine blade passage geometrical information, as it relates to the turbine specific loss coefficients, into the turbine stage component to allow for the development of turbine models capable of predicting turbine performance for various structural changes, anomalies and operating conditions. The development of turbine loss coefficient algorithms as they relate to specific blade geometry data clusters required the investigation of several turbine loss calculation methodologies. A stage-by-stage turbine nozzle-model incorporating turbine loss coefficient algorithms was developed and validated against real turbine test cases obtained from literature. Several turbine models were developed using the loss coefficient governed turbine stage component illustrating its array of capabilities. The incorporation of the turbine loss coefficient algorithms clearly illustrates the correlation between turbine performance deviations and changes in specific blade geometry data clusters. 2020-03-18T13:42:46Z 2020-03-18T13:42:46Z 2019 2020-03-17T13:07:37Z Master Thesis Masters MSc https://hdl.handle.net/11427/31619 eng application/pdf Department of Mechanical Engineering Faculty of Engineering and the Built Environment |
| spellingShingle | Turbine loss coefficient Flownex Stage-by-stage turbine nozzle-model Loss coefficient algorithm Marx, Alton Cadle Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model |
| thesis_degree_str | Master's |
| title | Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model |
| title_full | Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model |
| title_fullStr | Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model |
| title_full_unstemmed | Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model |
| title_short | Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model |
| title_sort | determining appropriate loss coefficients for use in the nozzle model of a stage by stage turbine model |
| topic | Turbine loss coefficient Flownex Stage-by-stage turbine nozzle-model Loss coefficient algorithm |
| url | https://hdl.handle.net/11427/31619 |
| work_keys_str_mv | AT marxaltoncadle determiningappropriatelosscoefficientsforuseinthenozzlemodelofastagebystageturbinemodel |