Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Conversion of the Sonic Conductance C and the Critical Pressure Ratio b into the Airflow Coefficient ${\mu}$

  • Grymek Szymon (Chair of Machinery Design and Exploitation, Gdansk University of Technology) ;
  • Kiczkowiak Tomasz (Chair of Control Systems, Technical University of Koszalin)
  • Published : 2005.09.01
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Abstract

In a case of computer simulation used for the verification of pneumatic system performance one of the main problems is that various parameters can be used to describe flow characteristics of the system components. The Standard ISO 6358 offers two parameters: the sonic conductance C and the critical static pressure ratio b, but the parameters can not be directly utilised in an analysis of a pneumatic system. In the standard analysis there is applied the airflow coefficient ${\mu}$, but it is not presented in the vendors' catalogues. In the paper the numerical algorithm for calculation of the airflow coefficient ${\mu}$. (which is required for computer simulation) as a function of sonic conductance C and a critical pressure ratio b (recommended by the standard) is presented. Additionally, because of the iterative character of the described algorithm, an artificial neural network approach to solve the problem is proposed.

Keywords

References

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