Hydrodynamic Analysis of Shallow Water Sloshing in Ship Chamber Under Longitudinal Earthquake

Authors

  • Jianbao Yang School of Medicine and Health Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, P.R. China
  • Yang Zhang Institute of Engineering and Technology, Hubei University of Science and Technology, Xianning 437100, P.R. China
  • Duanwei Shi Key Laboratory of Hydraulic Machinery Transients (Wuhan University), Ministry of Education, Wuhan 430072, P.R. China

DOI:

https://doi.org/10.13052/ijfp1439-9776.2439

Keywords:

Shiplift, hydrodynamic, shallow water sloshing, earthquake, dynamics

Abstract

Shallow water sloshing-structure interaction under the coupled longitudinal and pitch motions resulted by the longitudinal earthquake directly affects the structural safety of the shiplift. However, no matter in shiplift or other related fields, there is little research on this aspect at present. As a basis of structural dynamics analysis and earthquake resistant design, an analytical method including a developed modal system and new engineering formulas is presented to predict the hydrodynamic moment and force in the ship chamber. Based on the linear modal theory, a modal system describing shallow water sloshing under longitudinal earthquake is developed with infinite set of modal functions. Then, new engineering formulas for calculating the hydrodynamic moment and force are proposed with only retaining the lowest sloshing mode (n=1). Case simulations suggest that the maximum error of hydrodynamic moment and force between n=1 and n=100 are lower than 1.3% and 10.5%, respectively. In addition, the hydrodynamic moment resulting from pressure on the walls can be reasonably ignored, which accounts for less than 0.5% percent of total hydrodynamic moment. With respect to the currently used Housner model, the presented formulas are greatly improved in computational accuracy and rationally supplement the missing part in the seismic design part of the Design code for shiplift.

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Author Biographies

Jianbao Yang, School of Medicine and Health Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, P.R. China

Jianbao Yang, a lecturer at Hubei University of Science and Technology, he earned a Master’s degree from Shihezi University, Xinjiang, China, in 2017. His current research interests include fluid mechanics, medical engineering, neural network.

Yang Zhang, Institute of Engineering and Technology, Hubei University of Science and Technology, Xianning 437100, P.R. China

Yang Zhang, a lecturer at Hubei University of Science and Technology, he earned a Doctor of Engineering from Wuhan University, Wuhan, China, in 2020. His current research interests include shiplift, fluid mechanics, fluid-structure coupling, multi-body dynamics.

Duanwei Shi, Key Laboratory of Hydraulic Machinery Transients (Wuhan University), Ministry of Education, Wuhan 430072, P.R. China

Duanwei Shi, professor and doctoral advisor of Wuhan University. Research direction: mechanical system dynamics, virtual prototyping technology, CAE. The research on the dynamic performance of the main structures of the three gorges shiplift, Xiangjiaba shiplift, Danjiangkou shiplift, Pengshui shiplift and Gaobazhou shiplift has been completed.

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Published

2023-06-21

How to Cite

Yang, J. ., Zhang, Y. ., & Shi, D. . (2023). Hydrodynamic Analysis of Shallow Water Sloshing in Ship Chamber Under Longitudinal Earthquake. International Journal of Fluid Power, 24(03), 607–624. https://doi.org/10.13052/ijfp1439-9776.2439

Issue

2023: Vol 24 Iss 3

Section

ICFPMCE 2022