| Autor: |
Lopes, Gustavo, Simonassi, Loris, Lavagnoli, Sergio |
| Rok vydání: |
2023 |
| Předmět: |
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| DOI: |
10.5281/zenodo.8050033 |
| Popis: |
The aerodynamics of a high-speed low-pressure turbine (LPT) cascade was investigated under steady and unsteady flow conditions. The tests were performed at outlet Mach (M) and Reynolds numbers (Re) of 0.90 and 70k, respectively. Unsteady wakes were simulated by means of a wake generator equipped with bars. The bar reduced frequency () for the unsteady case was ~0.95. The inlet flow field was characterized in terms of the total pressure profile and incidence. The blade aerodynamics at the midspan and secondary flow region was investigated by means of pneumatic taps and hot-film sensors. The latter provided a novel view into the impact of the secondary flows on the heat-transfer topology on the blade suction side (SS). The cascade performance was quantified in terms of outlet flow angle and losses by means of a directional multi-hole probe. The results report the phase- averaged impact of unsteady wakes on the secondary flow structures in an open test case high-speed LPT geometry. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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