Artículos en revistas:
Quantification of the Influence of Unsteady Aerodynamic Loading on the Damping Characteristics of Airfoils Oscillating at Low Reduced Frequency. Part I: Theoretical Support
Quantification of the Influence of Unsteady Aerodynamic Loading on the Damping Characteristics of Airfoils Oscillating at Low Reduced Frequency. Part I: Theoretical Support
Año:2017
Áreas de investigación
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Turbomaquinaria
Datos
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Descripción
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| The effect of the unsteady aerodynamic loading of oscillating airfoils in the low-reduced frequency regime on the work per cycle curves is investigated. The theoretical analysis is based on a perturbation analysis of the linearized Navier?Stokes equations for real modes at low-reduced frequency. It was discovered that a new parameter, the unsteady loading, plays an essential role in the trends of the phase and modulus of the unsteady pressure caused by the airfoil oscillation. Here, the theory is extended in order to quan- tify this new parameter. It is shown that this parameter depends solely on the steady flow- field on the airfoil surface and the vibration mode-shape. As a consequence, the effect of changing the design operating conditions or the vibration mode onto the work-per-cycle curves (and therefore in the stability) can be easily predicted and, what is more impor- tant, quantified without conducting additional flutter analysis. The relevance of the parameter has been numerically confirmed in the Part II of the paper. | |
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Internacional
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JCR del ISI
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Título de la revista
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Journal of Turbomachinery |
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ISSN
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0889-504X |
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Factor de impacto JCR
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0,93 |
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Información de impacto
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Volumen
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139 |
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DOI
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10.1115/1.4034976 |
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Número de revista
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Desde la página
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031009-1 |
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Hasta la página
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031009-8 |
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Mes
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MARZO |
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Ranking
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Participantes
- Autor: Roque Corral Garcia (UPM)
- Autor: Almudena Vega Coso (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
- Creador: Departamento: Mecánica de Fluidos y Propulsión Aeroespacial
S2i 2023 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)