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Shock and Vibration
Volume 2016, Article ID 6198793, 7 pages
http://dx.doi.org/10.1155/2016/6198793
Research Article

Estimation of Reversed Flow in Long Pipeline Based on Axial Vibration Model of Dense Paste

1Mechanical Electronic and Information Engineering, China University of Mining and Technology, Beijing 100083, China
2College of Electronic Communication and Physics, Shandong University of Science and Technology, Qingdao, Shandong 266590, China

Received 19 October 2015; Revised 9 February 2016; Accepted 14 February 2016

Academic Editor: Radoslaw Zimroz

Copyright © 2016 Fuyan Lyu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Intense axial vibration of the paste and the reversed flow make damage to the transportation system and lag the transport progress. This paper analyzed the axial vibration of the paste by building the vibration model according to the working situations of the system. The amount of the reversed flow share is then estimated based on the formed axial vibration model. The estimation of the reversed flow is carried out by counting the amount of the decompressed paste in certain time, which is being relative to the displacement in a single process of the vibration in numerical. The estimation of the reversed flow share of coal slime paste under certain transportation conditions was given and compared with the result based on the wave velocity method. It is evident that the introduction of axial vibration model into the study of the pipeline transportation system is feasible and reasonable, which also supplements the theoretical foundation for the analysis of dense paste vibrations in pipeline transportation system and its impacts on the system.