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A theory of post-stall transients in axial compression systems. I - Development of equationsAn approximate theory is presented for post-stall transients in multistage axial compression systems. The theory leads to a set of three simultaneous nonlinear third-order partial differential equations for pressure rise, and average and disturbed values of flow coefficient, as functions of time and angle around the compressor. By a Galerkin procedure, angular dependence is averaged, and the equations become first order in time. These final equations are capable of describing the growth and possible decay of a rotating-stall cell during a compressor mass-flow transient. It is shown how rotating-stall-like and surgelike motions are coupled through these equations, and also how the instantaneous compressor pumping characteristic changes during the transient stall process.
Document ID
19860037350
Document Type
Conference Paper
Authors
Moore, F. K. (Cornell University Ithaca, NY, United States)
Greitzer, E. M. (MIT Cambridge, MA, United States)
Date Acquired
August 12, 2013
Publication Date
March 1, 1985
Subject Category
AIRCRAFT PROPULSION AND POWER
Report/Patent Number
ASME PAPER 85-GT-171
Funding Number(s)
CONTRACT_GRANT: NAG3-34
CONTRACT_GRANT: NSG-3208
Distribution Limits
Public
Copyright
Other