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Viscoelastic Model of Waterhammer in Single Pipeline - Problems and Questions

机译:单管道水锤的粘弹性模型-问题

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摘要

In the paper, viscoelastic model of waterhammer in a single polymer pipeline is analysed. The theoretical background of viscoelastic behaviour of the structure is shown and the mathematical model of waterhammer in a polymer pipeline is presented. The main problems connected with applying the model are discussed. The main emphasis is on the question of parameter estimation. Important aspects of wave speed calibration are presented. Estimation of a second group of parameters - retardation time and creep compliance values - was analysed. Problems and questions connected with the number of parameters, methods of estimation, potential non-uniqueness of the solution and accuracy of obtained calculations were discussed.
机译:本文分析了单个聚合物管道中水锤的粘弹性模型。给出了该结构粘弹性行为的理论背景,并提出了聚合物管道中水锤的数学模型。讨论了与应用模型有关的主要问题。主要重点是参数估计问题。介绍了波速校准的重要方面。分析了第二组参数的估计-延迟时间和蠕变柔度值。讨论了与参数数量,估计方法,解的潜在非唯一性以及所获得的计算精度有关的问题。

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