Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model

 

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dc.contributor.advisor Fuls, Wim
dc.contributor.author Marx, Alton Cadle
dc.date.accessioned 2020-03-18T13:42:46Z
dc.date.available 2020-03-18T13:42:46Z
dc.date.issued 2019
dc.identifier.citation Marx, A.C. 2019. Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model. . ,Engineering and the Built Environment ,Department of Mechanical Engineering. en_ZA
dc.identifier.uri https://hdl.handle.net/11427/31619
dc.description.abstract 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.
dc.subject Turbine loss coefficient
dc.subject Flownex
dc.subject Stage-by-stage turbine nozzle-model
dc.subject Loss coefficient algorithm
dc.title Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model
dc.type Thesis / Dissertation
dc.date.updated 2020-03-17T13:07:37Z
dc.language.rfc3066 eng
dc.publisher.faculty Engineering and the Built Environment
dc.publisher.department Department of Mechanical Engineering
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc
dc.identifier.apacitation Marx, A. C. (2019). <i>Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model</i>. (). ,Engineering and the Built Environment ,Department of Mechanical Engineering. Retrieved from en_ZA
dc.identifier.chicagocitation Marx, Alton Cadle. <i>"Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model."</i> ., ,Engineering and the Built Environment ,Department of Mechanical Engineering, 2019. en_ZA
dc.identifier.vancouvercitation Marx AC. Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model. []. ,Engineering and the Built Environment ,Department of Mechanical Engineering, 2019 [cited yyyy month dd]. Available from: en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Marx, Alton Cadle AB - 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. DA - 2019 DB - OpenUCT DP - University of Cape Town KW - Turbine loss coefficient KW - Flownex KW - Stage-by-stage turbine nozzle-model KW - Loss coefficient algorithm LK - https://open.uct.ac.za PY - 2019 T1 - Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model TI - Determining appropriate loss coefficients for use in the nozzle-model of a stage-by-stage turbine model UR - ER - en_ZA


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