publication . Article . 2014

Grid Generation for Screw Compressors with Variable Geometry Rotors

Ahmed Kovacevic;
Open Access
  • Published: 22 Jan 2014 Journal: International Journal of Aerospace and Lightweight Structures (IJALS), volume 3, page 191 (issn: 2010-4286, Copyright policy)
  • Publisher: Research Publishing Services
Abstract
An algebraic grid generation algorithm is presented in this paper which enables the per- formance of twin screw compressors with variable rotor geometry to be predicted, by means of Computational Fluid Dynamics (CFD). It is based on a method, previously developed by the authors, for compressors with standard uniform pitch rotors and con- stant cross-section profile, which has now been extended to include rotors with variable pitch and/or variable profile. By its use with the commercial CFD solver ANSYS CFX, it has been possible to obtain performance predictions for three variants of an oil-free 3/5 screw compressor, namely uniform helical rotors, variable pitch ...
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