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Title: Aerodynamic and mechanical performance of a high-pressure turbine stage in a transient wind tunnel
Author: Sheard, A. G.
ISNI:       0000 0001 3401 7271
Awarding Body: University of Oxford
Current Institution: University of Oxford
Date of Award: 1989
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Unsteady three-dimensional flow phenomena have major effects on the aerodynamic performance of, and heat transfer to, gas-turbine blading. Investigation of the mechanisms associated with these phenomena requires an experimental facility that is capable of simulating a gas turbine, but at lower levels of temperature and pressure to allow conventional measurement techniques. This thesis reports on the design, development and commissioning of a new experimental facility that models these unsteady three-dimensional flow phenomena. The new facility, which consists of a 62%-size, high-pressure gas-turbine stage mounted in a transient wind tunnel, simulates the turbine design point of a full-stage turbine. The thesis describes the aerodynamic and mechanical design of the new facility, a rigorous stress analysis of the facility’s rotating system and the three-stage commissioning of the facility. The thesis concludes with an assessment of the turbine stage performance.
Supervisor: Schultz, D. L. ; Ainsworth, R. W. Sponsor: Rolls-Royce plc ; Science and Engineering Research Council
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Aerodynamics and heat transfer ; Aero engines ; Mechanical engineering ; Turbomachinery hypersonics and aerodynamics ; turbomachinery ; aerodynamics ; mechanical performance of a high pressure turbine stage ; transient wind tunnel