Aero-engine core compressor preliminary design strategy has been successfully applied to the advanced of gas turbines compressors. However, few researchers have addressed application aero-engine in optimal industrial process Here we embedded into a method, which six types parameters widely used define configuration, i.e., aspect ratio, solidity, reaction, rotation speed, outlet axial Mach numbe...

This paper analyzes the nonlinear phenomenon of rotating stall via the methods of projection [Elementary Stability and Bifurcation Theory, G. Iooss and D. D. Joseph, Springer-Verlag, 1980] and Lyapunov [J.-H. Fu, Math. Control Signal Systems, 7, 255278, 1994]. A compressor model of Moore and Greitzer is adopted in which rotating stall dynamics are associated with Hopf bifurcations. Local stabil...

A combination of theoretical and computational nonlinear analysis techniques are used to study the scenario of bifurcations responsible for the initiation of rotating stall in an axial ow compressor model. It is found that viscosity tends to damp higher-frequency modes and so results in a sequence of bifurcations along the uniform-ow solution branch to stall cells of diierent mode number. Lower...

We start from the dynamic equations of the comprimating systems (Greitzer-1976) and we make a nondimensionalizing the mass flow rate, the pressure and the time to obtain the nondimensional governing equations. To analyse the stability we apply the Routh Hourwitz criterion and we determin the useful stability range for compressor stability. We propose an interesting concept of dynamic stabilizat...

A stall diagnosis method based on the entropy feature extraction algorithm is developed in axial compressors. The reliability of proposed determined and a parametric sensitivity analysis experimentally conducted for two different types compressor diagnoses. collection time-resolved pressure sensors mounted circumferentially along chord direction to measure dynamic casing. Results show that pres...