The Method of Characteristics numerical scheme has been augmented to analyze various transient scenarios likely to occur in slack flow lines. The slack flow region is modeled as a vapor cavity bounded by liquid/vapor interfaces at its extremities. The coupled equations allow for the filling, emptying, and tightening of slack flow regions by tracking the movement of the liquid/vapor interfaces. The main advantage of the calculation scheme is that using a single computer program allows the user to simulate the behavior of multiple slack flow regions in a pipe line that are separated by tight flow regions. This logic was incorporated in a generalized computer program that can be used to analyze transients such as valve closure, pump trip etc. in complex networks. The results of two typical applications required for modeling a crude oil pipeline from a pumping station to a tanker loading platform are presented.


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    Title :

    Transient analysis of slack flow in liquid pipe lines


    Contributors:
    Husaini, S.M. (author) / Kakka, R.S. (author)


    Publication date :

    1998


    Size :

    Seiten



    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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