The Mathematical Institute, University of Oxford, Eprints Archive

Eigenmode analysis for turbomachinery applications

Moinier, P. and Giles, M. B. (2004) Eigenmode analysis for turbomachinery applications. Technical Report. Unspecified. (Submitted)



This paper discusses the numerical computation of unsteady eigenmodes superimposed upon an annular mean flow which is uniform axially and circumferentially, but non-uniform in the radial direction. Both inviscid and viscous flows are considered, and attention is paid to the separation of the eigenmodes into acoustic, entropy and vorticity modes. The numerical computations are validated by comparison to analytic test cases, and results are presented for more realistic engineering applications, showing the utility of the approach for post-processing and for the construction of non-reflecting boundary conditions.

This work was supported by Rolls-Royce and DTI fundings

Item Type:Technical Report (Technical Report)
Subjects:D - G > Fluid mechanics
H - N > Numerical analysis
Research Groups:Numerical Analysis Group
ID Code:1179
Deposited By: Lotti Ekert
Deposited On:18 May 2011 07:15
Last Modified:29 May 2015 18:52

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