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Design and modelling of screw machines.

Number: pap. n. 11

Author(s) : KOVACEVIC A., STOSIC N., RANE S.

Summary

Positive displacement screw machines are classified as compressors, expanders, blowers, vacuum pumps, liquid and multiphase pumps and used in a variety of applications such as industrial refrigeration, air conditioning and process gas compression. It is estimated that almost 20% of world energy consumption is used for various means of gas compression and pumping. Therefore improvements in the efficiency and robustness of these machines are the imperative for every manufacturer. Screw machines are normally designed with the aid of analytical tools, often based on one-dimensional flow models solved by numerical methods which are validated by experiments. Continuing demands for improvements in accuracy and for designing such machines for new applications have generated a need to use advanced means of assessment of fluid flow within these machines. This paper gives an overview of DISCO© (Design Integration for Screw Compressors), a software tool that parametrically assembles design of screw machines by integrating profile and rotor geometry generation with thermodynamic and CAD design of the machine, taking it further to generate numerical mesh which can then be used for detailed 3D CFD (Computational Fluid Dynamics) analysis. Some of the practical applications of this tool are presented in the paper.

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Pages: 8 p.

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Details

  • Original title: Design and modelling of screw machines.
  • Record ID : 30008720
  • Languages: English
  • Source: Compressors 2013: 8th International Conference on Compressors and Coolants.
  • Publication date: 2013/09/02

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