Investigation of nonlinear sloshing effects in seismically excited tanks |
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| Institution: | 1. Assistant Professor, Structural Engineering Research Center, International Institute of Earthquake Engineering and Seismology (IIEES), Tehran, Iran;2. Full Professor on Civil Engineering Department, KNToosi University of Technology, Tehran, Iran;1. Computer Engineering School, Iran University of Science and Technology (IUST), Tehran, Iran;2. Department of Computer Engineering and Information Technology, Islamic Azad University, Qazvin, Iran;1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;2. Department of Civil and Environmental Engineering, National University of Singapore, Singapore 117576, Singapore;3. School of Computing, Engineering and Mathematics, University of Western Sydney, Locked Bag 1797, Penrith, NSW 2751, Australia;1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, China;2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai Jiao Tong University, China;3. Shanghai Key Laboratory of Ship Engineering, Marine Design & Research Institute of China, Shanghai, China;1. The Cloud Computing and Distributed Systems (CLOUDS) Laboratory, School of Computing and Information Systems, The University of Melbourne, Australia;2. Department of Electrical and Electronic Engineering, The University of Melbourne, Australia;1. Department of Ocean System Engineering, Jeju National University, Jeju 690-756, Republic of Korea;2. Korea Institute of Ships and Ocean Engineering (KRISO), Daejeon 305-343, Republic of Korea;3. Department of Ocean Engineering, Texas A&M University, TX 77843, United States |
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| Abstract: | Nonlinear behavior of liquid sloshing inside a partially filled rectangular tank is investigated. The nonlinearity in the numerical modeling of the liquid sloshing originates from the nonlinear terms of the governing equations of the fluid flow and the liquid free surface motion as a not known boundary condition. The numerical simulations are performed for both linear and nonlinear conditions. The computed results using linear conditions are compared with readily available exact solution. In order to verify the results of the nonlinear numerical solution, a series of the shaking table tests on rectangular tank were conducted. Having verified linear and nonlinear numerical models, they are used for computation of near wall sloshing height at a series of real scale tanks (with various dimensions) under the both harmonic and earthquake base excitation. Finally, the nonlinear effects on liquid sloshing modeling are discussed and the practical limitations of the linear solution in evaluating the response of seismically excited liquids are also addressed. |
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