In this paper we describe the application of a CFD methodology to characterize the orifice flows over a wide range of flow conditions with various geometrical features commonly found in hydraulic control systems. There are three objectives in carrying out this study. First, apply CFD analyses to provide physical insight into the orifice flow physics and clarify the use of relevant engineering parameters critical to hydraulic control applications. Second, quantify orifice discharge coefficient with respect to orifice diameter ratio, cross-sectional shape, plate thickness, orifice entrance and exit geometries. Third, support physical test and establish building block elements for hydraulic system modeling. The results obtained from CFD calculations agree very well with available data published in professional handbooks and fluid mechanics related textbooks, especially in the high Reynolds number flow regime. Conclusions and observations are summarized to highlight the effects on the discharge coefficients with respect to orifice diameter ratio, thickness, entrance and trailing edges, frontal shape and sectional geometry.


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    Title :

    Transmission Main Control Orifice Flow Characteristics and Correlations


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2004 World Congress & Exhibition ; 2004



    Publication date :

    2004-03-08




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Transmission Main Control Orifice Flow Characteristics and Correlations

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    Transmission main control orifice flow characteristics and correlations

    Kim,C. / Perng,C.Y. / Zhang,D. et al. | Automotive engineering | 2004


    Transmission Main Control Orifice Flow Characteristics and Correlations

    Kim, C. / Perng, C.-Y. / Zhang, D. et al. | British Library Conference Proceedings | 2004


    Transmission main control orifice flow characteristics and correlations

    Kim,C. / Perng,C.Y. / Zhang,D. et al. | Automotive engineering | 2004