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Analysis and design of positive displacement screw machines

Minimise efforts in design and maximise the efficiency of your machines

SCORGTM will help to enhance your screw compressors, pumps and motors.
It will link your design to any commercial Computational Fluid Dynamics solver
or our own multichamber thermodynamics and allow fast performance prediction.

Why choose us?

  • The PDM Analysis Ltd mission is to provide fast and reliable analysis and design solutions for screw compressors, expanders, pumps and motors
    • SCORGTM is industry leading grid generation and simulation software
    • We are specialists in the design and analysis of screw machines
    • We support industry and academia working on screw machines
  • Grid generation for CFD, analysis and design of screw machines
    • User friendly and fast Graphical User Interface
    • Fast and reliable industry leading grid generation
    • Direct link to CFD solvers: ANSYS CFX, Pumplinx and StarCCM+
    • User profile evaluation; Multi-chamber performance prediction
  • • Research and Development departments working on screw machines,
    • Business developers in companies involved with screw machines,
    • Manufacturers of screw machines,
    • Technical or business advisers for companies in related sectors,
    • University teachers or researchers in positive displacement machines,
    • Students working on projects related to screw machines.




SCORGTM is the software for design and analysis of Screw Compressors, Expanders, Pumps and Motors. It offers unique capability to generate numerical mesh for Computational Fluid Dynamics (CFD).
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Partners and clients


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



Conjugate Heat Transfer simulation of an Oil-free Twin Screw Compressor

Video shows the results from a Transient Conjugate Heat Transfer simulation of an Oil-free Twin Screw Compressor. SCORG grid generator was used for the deforming fluid domain and SCORG CAD export utility was used for the rotor geometry of the solid components. The temperature of the air during compression from 1.0 bar to 2.5 bar reaches up to 130 C. Following metal conduction, the temperature in the rotors is in the range of 60 – 90 C. The numerical time scale of solid conduction was modified in the Ansys CFX solver to accelerate metal conduction, achieving steady-state temperature results within a reasonable number of gas flow cycles.

Simulation is part of the SECRET project. Howden and City Compressors at City, University of London collaborate on a 5-year project – Smart Efficient Compression, Reliability and Energy Targets (SECRET) which is supported by an award from Royal Academy of Engineering. The aim is to develop novel energy-efficient compression technologies.

For more videos check our YouTube.