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Combined experimental and numerical investigations on the roughness effects on the aerodynamic performances of LPT blades |
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| Authors: | Marco Berrino Fabio Bigoni Daniele Simoni Matteo Giovannini Michele Marconcini Roberto Pacciani Francesco Bertini |
| Affiliation: | 1. DIME-Universitá di Genova,Via Montallegro,1,16145,Genova,Italy;2. DIEF-Universitá di Firenze,Via Santa Marta,3,50139,Firenze,Italy;3. GE Avio R&D,Via I Maggio,99,10140,Rivalta (TO),Italy |
| Abstract: | The aerodynamic performance of a high-load low-pressure turbine blade cascade has been analyzed for three different distributed surface roughness levels (Ra) for steady and unsteady inflows. Results from CFD simulations and experiments are presented for two different Reynolds numbers (300000 and 70000 representative of take-off and cruise conditions, respectively) in order to evaluate the roughness effects for two typical operating conditions. |
| Keywords: | low-pressure turbine high-load profile roughness unsteady inflow CFD |
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