Abstract
This paper examined the effectiveness of the inline re-design strategy used to mitigate the cavitating flow into an existing steel piping system. This strategy is based on substituting a short-section of the transient sensitive region of the existing main pipe by another one made of (HDPE) or (LDPE) plastic material. The (1−D) pressurized pipe flow model based on the Ramos formulation was used to describe the flow behavior, along with the fixed grid Method of Characteristics being used for numerical computations. From the case studied, it was shown that such a technique could mitigate the undesirable cavitating flow onset. Besides, this strategy allowed positive-surge magnitude attenuation. It was also found that pressure rise or drop attenuation was slightly more important for the case using an (LDPE) inline plastic short-section than that using an (HDPE) one. Furthermore, results evidenced that other factors influencing the surge attenuation rate were related to the short-section dimensions.
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Fersi, M., Triki, A. (2020). Investigating the Inline Design Measure in Existing Pressurized Steel Piping Systems. In: Aifaoui, N., et al. Design and Modeling of Mechanical Systems - IV. CMSM 2019. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-27146-6_9
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