Publications Scientifiques

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Subject: search.filters.subject.Compressibility

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    An investigation of highly pressurized transient fluid flow in pipelines
    (2012) Ouchiha, Z.; Loraud, J. C.; Ghezal, A.; Kessal, M.; Benzaoui, A.; Ghiaasiaan, M.
    This paper discusses transient processes in natural gas pipelines. The method of characteristics (MOC) is applied for the analysis of two transient categories, where the governing one-dimensional, hyperbolic conservation equations are linearized and solved without neglecting any of their term. First, we present a parametric study of the pressurized flow encountered when pipelines are utilized for the transportation or the temporary storage of natural gas. The non-ideal compressibility of natural gas is included in the model and its impact on the thermo-hydraulic processes is elucidated. Second, we model the hydrodynamics of a pipeline whose downstream boundary is a periodic discharge rate. The results show that, in response to these boundary conditions, the pressure distribution in the pipeline also undergoes periodic variations. Furthermore, our simulation results confirm the usefulness of MOC for numerical simulation of flow phenomena in pipelines
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    The Compressibility Effect on the Counting Gas Method Choice
    (2009) Guemana, M.; Aissani, S.; Bennani, A.
    The measuring of the quantities of gas is a significant activity of the industry of the transport of gas by drain, as well in the contractual or commercial field as in the technical field where it makes it possible to give essential information for the design of the gas networks. The purpose of this study is essential, after a short recall on the methods of calculation of the factor of compressibility and the flow according to various standards, to give the importance necessary to carry out an adequate choice of the method of calculation of these parameters