Screw Compressor

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Screw compressors are rotary positive displacement machines, which are compact, have few moving parts and which operate at high efficiency over a wide range of speeds and pressure differences. Consequently a substantial proportion of all industrial compressors now produced are of this type.

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There  are  few  published  books  on  the  principles  of  their  operation  and how best to design them, especially in English. The authors made a first step to fill this void with an earlier work on mathematical modelling and performance calculation of these machines. This described analytical procedures which are generally adequate for most applications, especially when dealing with oil flooded machines, in which temperature changes are relatively small and thus the effect of changes of shape of the key components on performance may be neglected.  

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This assumption permitted  the  use  of  analytical  procedures  based  on  flow  through  passages  with dimensions that are invariant with temperature and pressure. 

Topics covered in this book: 

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• Introduction
• Computational Fluid Dynamics in Screw Machines
• Grid generation of Screw Machine Geometry
• Applications
• Conclusions
• A Models of Turbulent Flow
• B Wall Boundaries
• C Finite Volume Discretization 

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