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Simulation of a refrigeration compressor evaluating accuracy of results with variation in 3D component discretization.

Number: pap. 1186

Author(s) : OLIVEIRA S., REAL M., MARSH D.

Summary

Nowadays, simulation tools are becoming mandatory for refrigeration compressor design, not only to reduce development time improving the responsiveness to the market, but to better understand the complex transient phenomena taking place inside the product. Hybrid models regarding the compressor as a group of components modeled as 1D and 3D are currently the most promising approach for simulation purposes. Flow components with spatial characteristics are normally modeled with CFD, providing excellent accuracy but demanding considerable computational cost due to the high levels of discretization. In this work, three spatial components of a hermetic refrigeration compressor were simulated with low levels of discretization to reduce computational time. Three models were created for each one of these components to consider different levels of discretization, starting from the most basic 1D. The results were compared with experimental data to check the accuracy. For some components, the discretization level didn’t seem to make any difference, but others showed better results with higher discretization levels. In general a good agreement was observed between simulation and experiment.

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Pages: 10 p.

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Details

  • Original title: Simulation of a refrigeration compressor evaluating accuracy of results with variation in 3D component discretization.
  • Record ID : 30013925
  • Languages: English
  • Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Publication date: 2014/07/14

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