On the Kutta Condition for Sound Transmission in an Annular Cascade of Vanes - Archive ouverte HAL Access content directly
Conference Papers Year : 2016

On the Kutta Condition for Sound Transmission in an Annular Cascade of Vanes

Abstract

The present work deals with the analytical formulation of sound transmission through the outlet guide vanes of a subsonic axial-flow fan. Drastic approximations on the geometry and the flow features are necessary in order to produce tractable, closed-form solutions. Because the exit flow from outlet guide vanes must be axial, the vanes are nearly parallel to the axis at the trailing-edge. They can be modeled as an annular cascade of axially aligned and zero-thickness plates. This simplification remains representative of a system of non-parallel vanes with hub and carter rigid-wall boundary conditions. The flow is considered as homoentropic and inviscid of uniform axial Mach number M. Previous studies by Howe and Rienstra highlighted the importance of the Kutta condition in the formulation of such sound transmission problems. Recently, Bouley showed that, in a 2D reduction of the same problem, the scattered acoustic fields can be significantly overestimated when this condition is not imposed.
Fichier principal
Vignette du fichier
417.Francois2016.pdf (188.3 Ko) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

hal-01891313 , version 1 (09-10-2018)

Identifiers

  • HAL Id : hal-01891313 , version 1

Cite

Benjamin François, Simon Bouley, Michel Roger. On the Kutta Condition for Sound Transmission in an Annular Cascade of Vanes. 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Apr 2016, Honolulu, United States. ⟨hal-01891313⟩
137 View
25 Download

Share

Gmail Mastodon Facebook X LinkedIn More