Conversion of the sonic conductancec and the critical pressure ratiob into the airflow coefficientμ

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 conductanceC and the critical s...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2005-09, Vol.19 (9), p.1706-1710
Main Authors: Grymek, Szymon, Kiczkowiak, Tomasz
Format: Article
Language:English
Subjects:
Air flow
Airflow
Algorithms
Artificial neural networks
Coefficients
Computer simulation
Critical pressure
Flow characteristics
Iterative methods
Mathematical analysis
Mathematical models
Numerical analysis
Parameters
Sonics
Static pressure
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Summary: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 conductanceC and the critical static pressure ratiob, 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 μ, but it is not presented in the vendors’ catalogues. In the paper the numerical algorithm for calculation of the airflow coefficient μ (which is required for computer simulation) as a function of sonic conductanceC and a critical pressure ratiob (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.
ISSN:1738-494X
1976-3824
DOI:10.1007/BF02984182