Plunging Airfoil: Reynolds Number and Angle of Attack Effects
| Autor: | André Silva, Jorge M. M. Barata, Emanuel António Rodrigues Camacho, Fernando M. S. P. Neves |
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| Přispěvatelé: | uBibliorum |
| Rok vydání: | 2020 |
| Předmět: |
Unsteady airfoils
Airfoil Physics Angle of attack MathematicsofComputing_GENERAL Aerospace Engineering Reynolds number TL1-4050 Propulsive efficiency Aerodynamics Mechanics Mean angle-of-attack symbols.namesake TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES Thrust production symbols Systems design Strouhal number Micro Air Vehicle Flexible Wings Flapping Reynolds-averaged Navier–Stokes equations Mathematics Motor vehicles. Aeronautics. Astronautics |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Aerospace, Vol 8, Iss 216, p 216 (2021) Aerospace Volume 8 Issue 8 |
| DOI: | 10.2514/6.2020-3040 |
| Popis: | Natural flight has consistently been the wellspring of many creative minds, yet recreating the propulsive systems of natural flyers is quite hard and challenging. Regarding propulsive systems design, biomimetics offers a wide variety of solutions that can be applied at low Reynolds numbers, achieving high performance and maneuverability systems. The main goal of the current work is to computationally investigate the thrust-power intricacies while operating at different Reynolds numbers, reduced frequencies, nondimensional amplitudes, and mean angles of attack of the oscillatory motion of a NACA0012 airfoil. Simulations are performed utilizing a RANS (Reynolds Averaged Navier-Stokes) approach for a Reynolds number between 8.5×10^3 and 3.4×10^4, reduced frequencies within 1 and 5, and Strouhal numbers from 0.1 to 0.4. The influence of the mean angle-of-attack is also studied in the range of 0º to 10º. The outcomes show ideal operational conditions for the diverse Reynolds numbers, and results regarding thrust-power correlations and the influence of the mean angle-of-attack on the aerodynamic coefficients and the propulsive efficiency are widely explored. Fundação para a Ciência e a Tecnologia e Santander-UBI Fundação para a Ciência e Tecnologia (FCT) through the project number UIDB/50022/2020, the Grant co-sponsored by Santander-UBI BID/FE/2019 and the grant sponsored by Fundação para a Ciência e a Tecnologia 2020.04648.BD |
| Databáze: | OpenAIRE |
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