Contributions to high technology readiness level experimental turbine aerothermal research and applications
<p>This thesis reports a series of contributions to high technology readiness level (TRL) experimental turbine aerothermal research (testing facilities, instrumentation and data processing techniques) and the application of high TRL research techniques to study turbine in-service deterioration...
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| Format: | Thesis |
| Language: | English |
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2022
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| _version_ | 1826314395047690240 |
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| author | Michaud, M |
| author2 | Povey, T |
| author_facet | Povey, T Michaud, M |
| author_sort | Michaud, M |
| collection | OXFORD |
| description | <p>This thesis reports a series of contributions to high technology readiness level (TRL) experimental turbine aerothermal research (testing facilities, instrumentation and data processing techniques) and the application of high TRL research techniques to study turbine in-service deterioration. High TRL research is key in turbine development to derisk engine program by validating the aerothermal performance of novel turbine component designs earlier in the engine development programs, thus allowing for more innovative solutions to be considered. It therefore accelerates, derisks and reduces the cost of the development of new turbine components for more efficient engine operation. Data from high TRL experiments can also prove fruitful for fundamental research. While most of the turbine research is achieved by having a fundamental understanding of the flow physics with simplified studies isolating certain effects (<em>bottom-up</em> approach), high TRL experiments can be regarded as a <em>top-down</em> approach where all the boundary conditions are coupled, to accurately provide the final result of the complex system. High TRL experiments can then validate the accuracy of the superposition (in a model) of individual effects obtained in the bottom-up approach, therefore making the two approaches complimentary.</p>
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<p>This thesis is presented as a collection of five academic publications related to high TRL experimental turbine research. The first publication is on the upgrade of a high TRL turbine testing facility to independently control the Mach number and Reynolds number. The second publication is on the development of instrumentation for high-accuracy in situ infrared calibration in environment with through-wall heat flux and surface temperature non-uniformity. The third publication is on the development of a new post-processing method to extract the heat transfer coefficients (internal and external) from transient overall cooling effectiveness measurements on internally cooled turbine components. The fourth and fifth publications are on the application of high-TRL research techniques to study the impact of in-service deterioration on the aerodynamic and thermal performance of real turbine components, respectively.</p> |
| first_indexed | 2024-09-25T04:33:30Z |
| format | Thesis |
| id | oxford-uuid:703fc05d-bdbb-424b-9ab0-464e4b356e07 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:33:30Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | oxford-uuid:703fc05d-bdbb-424b-9ab0-464e4b356e072024-09-05T11:20:46ZContributions to high technology readiness level experimental turbine aerothermal research and applicationsThesishttp://purl.org/coar/resource_type/c_db06uuid:703fc05d-bdbb-424b-9ab0-464e4b356e07EnglishHyrax Deposit2022Michaud, MPovey, T<p>This thesis reports a series of contributions to high technology readiness level (TRL) experimental turbine aerothermal research (testing facilities, instrumentation and data processing techniques) and the application of high TRL research techniques to study turbine in-service deterioration. High TRL research is key in turbine development to derisk engine program by validating the aerothermal performance of novel turbine component designs earlier in the engine development programs, thus allowing for more innovative solutions to be considered. It therefore accelerates, derisks and reduces the cost of the development of new turbine components for more efficient engine operation. Data from high TRL experiments can also prove fruitful for fundamental research. While most of the turbine research is achieved by having a fundamental understanding of the flow physics with simplified studies isolating certain effects (<em>bottom-up</em> approach), high TRL experiments can be regarded as a <em>top-down</em> approach where all the boundary conditions are coupled, to accurately provide the final result of the complex system. High TRL experiments can then validate the accuracy of the superposition (in a model) of individual effects obtained in the bottom-up approach, therefore making the two approaches complimentary.</p> <br> <p>This thesis is presented as a collection of five academic publications related to high TRL experimental turbine research. The first publication is on the upgrade of a high TRL turbine testing facility to independently control the Mach number and Reynolds number. The second publication is on the development of instrumentation for high-accuracy in situ infrared calibration in environment with through-wall heat flux and surface temperature non-uniformity. The third publication is on the development of a new post-processing method to extract the heat transfer coefficients (internal and external) from transient overall cooling effectiveness measurements on internally cooled turbine components. The fourth and fifth publications are on the application of high-TRL research techniques to study the impact of in-service deterioration on the aerodynamic and thermal performance of real turbine components, respectively.</p> |
| spellingShingle | Michaud, M Contributions to high technology readiness level experimental turbine aerothermal research and applications |
| title | Contributions to high technology readiness level experimental turbine aerothermal research and applications |
| title_full | Contributions to high technology readiness level experimental turbine aerothermal research and applications |
| title_fullStr | Contributions to high technology readiness level experimental turbine aerothermal research and applications |
| title_full_unstemmed | Contributions to high technology readiness level experimental turbine aerothermal research and applications |
| title_short | Contributions to high technology readiness level experimental turbine aerothermal research and applications |
| title_sort | contributions to high technology readiness level experimental turbine aerothermal research and applications |
| work_keys_str_mv | AT michaudm contributionstohightechnologyreadinesslevelexperimentalturbineaerothermalresearchandapplications |