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Memorias de investigación
Artículos en revistas:
Analytical Calculation of Stall-inception and Surge Points for an Axial-flow Compressor Rotor
Año:2012
Áreas de investigación
  • Ingeniería mecánica, aeronaútica y naval
Datos
Descripción
Recently, a theoretical criterion to calculate the stability of an axial-flow compressor rotor has been presented in the scientific literature. This theoretical criterion was used for determining the locus of the stability line over the rotor map and for predicting the post-stall evolution of the constant-speed line of a rotor. The main objective of this paper is to improve the predictions of such a model. To do that, the paper proposes a different characterization of the characteristic azimuthal length and a calculation of the ratio of specific heats based on a polytropic exponent. Thanks to these new values, the model predicts two bifurcation points in the behaviour of the flow: the inception point of the instability and the surge point. Experimental data from a pure axial compressor are used to validate the model showing that the prediction of the flow coefficient at the surge point has an error inferior to 5%. For the rotor studied, the paper provides a quantitative and qualitative description of the inception of the instability and of the mechanism involved in the instable region of the compressor map. The paper also discusses the role of rotor efficiency in the position of the bifurcations and gives a sensitivity analysis of its position. Finally, it presents a discussion about how the model can explain the different behaviours exhibited by the same rotor when the flow coefficient is reduced.
Internacional
Si
JCR del ISI
No
Título de la revista
International Journal of Turbo and Jet Engines
ISSN
0334-0082
Factor de impacto JCR
0,025
Información de impacto
Volumen
DOI
Número de revista
Desde la página
1
Hasta la página
32
Mes
SIN MES
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Efren Moreno Benavides (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Ciencias y Operaciones Aeroespaciales
  • Departamento: Motopropulsión y Termofluidodinámica
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