Remember Me
Or use your Academic/Social account:


Or use your Academic/Social account:


You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.


Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Rane, S.; Kovacevic, A.; Stosic, N. (2016)
Publisher: Purdue University
Languages: English
Types: Article
Subjects: Oil Flooded Twin Screw Compressor, CFD, Deforming Grid, TJ
Modelling of screw compressors using Computational Fluid Dynamics (CFD) offers better insight into the working chamber of twin screw machines when compared with chamber models. As shown by authors in earlier publications, CFD models predict performance of dry gas and refrigeration compressors fairly accurately. However numerical flow models used for modelling of oil flooded twin screw compressors are still at the development stage. This is mainly due to the lack of understanding of the flow complexity and the techniques used for solving coupled equations that represent interactions between the gas and the oil in such machines. This paper presents the modelling approach used for calculation of the performance of an oil flooded screw compressor. It requires a structured numerical mesh which can represent all moving parts of the compressor in a single numerical domain. Such mesh is generated by SCORGTM using novel boundary distribution technique called casing-to-rotor conformal boundary mapping. A test oil injected twin screw compressor with rotor configuration 4/5 and 127 mm main rotor diameter was measured in the compressor rig of the Centre for Compressor Technology at City University London. Measurements of the chamber pressure history and integral parameters of the compressor such as mass flow rate of gas and oil, indicated power and temperatures are used for the comparison with CFD results. The analysis showed a close match in the prediction of the mass flow rates of gas. The indicated power obtained by CFD predictions matched well with the measured shaft power. The model provided an exceptional visualization of the interaction of gas and oil inside the compression chamber. The mixing of the phases, distribution of oil, heat transfer between gas and oil and also effects on sealing due to high oil concentration in leakage gaps were well captured.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Arjeneh M., Kovačević A., Gavaises M., Rane S., (2014). Study of Multiphase Flow at the Suction of Screw Compressor, Proc. Int. Compressor Conf. at Purdue, Paper 1353.
    • Crowe, T. C., (2006). Multiphase Flow Handbook. Taylor and Francis, ISBN 0-8493-1280-9, CRC Press.
    • Deipenwisch R and Kauder K., (1999). Oil as a design parameter in screw type compressors: oil distribution and power losses caused by oil in the working chamber of a screw type compressor. IMECHE Transactions; 6; 49-58; Int. Conf. on Compressors and their systems, London.
    • Kovačević A., (2002), Three-Dimensional Numerical Analysis for Flow Prediction in Positive Displacement Screw Machines, Thesis, City University London.
    • Kovačević A., (2005). Boundary Adaptation in Grid Generation for CFD Analysis of Screw Compressors, Int. J. Numer. Methods Eng., Vol. 64: 401-426.
    • Kovačević A., Stošić N. and Smith I. K., (2007). Screw compressors - Three dimensional computational fluid dynamics and solid fluid interaction, ISBN 3- 540-36302-5, Springer-Verlag Berlin Heidelberg New York.
    • Papes, I., Degroote, J. and Vierendeels, J., (2013), 3D CFD analysis of an oil injected twin screw expander. Pro of the ASME 2013 International Mechanical Engineering Congress and Exposition, San Diego, USA: ASME IMECE 2013.
    • Rane S., Kovačević A., Stošić N. and Kethidi M., (2014). Deforming grid generation and CFD analysis of variable geometry screw compressors, Computers and Fluids, 99, p. 124-141.
    • Rane, S., (2015). Grid Generation and CFD analysis of Variable Geometry Screw Machines, Thesis, City University London.
    • Stošić N., Milutinovic Lj., Hanjalić K. and Kovačević A., (1992). Investigation of the influence of oil injection upon the screw compressor working process. Int. J. Refrig. vol. 15(4), pp. 206-220.
    • Stošić N., Smith I.K. and Kovačević A., (2005). Screw Compressors: Mathematical Modeling and Performance Calculation, Monograph, Springer Verlag, Berlin, June 2005, ISBN: 3-540-24275-9.
    • Voorde Vande J. and Vierendeels J., (2005). A grid manipulation algorithm for ALE calculations in screw compressors. 17th AIAA Computational Fluid Dynamics Conference, Canada, AIAA 2005-4701.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article