Numerical comparative study of compressor rotor and stator blade deposition rates

Compressor fouling is generally accepted to be an important factor ashen monitoring the efficiency of an engine's operation. However, there are not many studies related to the local fouling behavior of the individual components of the compressor. In the present paper, the CFD-ACE software package is used for the flow field calculation and the results are utilized to calculate the deposition rates on the blade surfaces of a conventional compressor stator and rotor. The deposition model takes into account the particle and surface material properties and the energy balance at the point of impact. A discussion is presented regarding the various mechanisms that produce the final deposition rate distribution and how the posy field and blade geometry affect it.