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PDM Analysis Ltd offers software and services for design and analysis of Positive Displacement Screw Compressors, Pumps and Motors. We have over 25 years of experience in the field of screw compressors through collaboration with leading companies and more than 15 years of experience in development and commercialisation of specialist software for design and analysis of such machines.


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VERT Rotors Ltd. invented a special internally geared conical rotary compressor with an Inner rotor revolving inside an Outer rotor. The first prototype showed a 1:22 compression ratio, and the company wanted to evaluate a new screw profile to simplify the manufacturing. The full 3D CFD analysis of this compressor using SCORGTM allowed full insight into the process and operation which in turn helped the company to validate the new screw profile and quickly move to production in two weeks. Currently VERT Rotors Ltd. are manufacturing two types of this low vibration and low noise compressor for cooling and air applications. More detail about the compressor on

VERT Rotors 17/03/2015