The influence of rotor deflection upon screw compressor performance

Authors: Kovačević A, Stošić N, Smith I
Where published:Vdi Berichte

The compression process within screw compressors induces large pressure and temperature changes that cause the rotors to deform. To determine this effect, a 3-D numerical method has been developed to calculate flow and deformation simultaneously. This comprises a mathematical procedure to generate a numerical grid for both the solid and fluid domains, in the form of a computer program named SCORG, attached to a commercial CCM software package. The effects of rotor distortion on the compressor performance were thus determined and are presented.

Keywords:grid generation , performance , pressure , screw compressor