Document Type: Article All Authors / Contributors: Ali Goudarzi M.; Reza Sabbagh-Yazdi S. ISSN:0267-7261 Language Note: English Unique Identifier: 815410319 Awards:
| Title | : | Investigation of nonlinear sloshing effects in seismically excited tanks |
| Author | : | Ali Goudarzi M.; Reza Sabbagh-Yazdi S. |
| Language | : | en |
| Rating | : | 4.90 out of 5 stars |
| Type | : | PDF, ePub, Kindle |
| Uploaded | : | Apr 12, 2021 |
Full Download Investigation of nonlinear sloshing effects in seismically excited tanks - Ali Goudarzi M.; Reza Sabbagh-Yazdi S. file in ePub
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Non-linear, viscous flow equations of a newtonian, boussinesq liquid are solved. Some of the features of the evolution of sloshing in nearly two-layer and three-layer fluid systems are described. Initially, the middle of the two layers and the center of the middle layer of the three layers are horizontal and located at the center of the tank.
The sloshing phenomenon of liquid in a partially filled tank mounted rigidly within a barge exposed to regular wave field has been considered for numerical investigation. This paper details the numerical scheme developed in time domain to study the interaction of wave induced barge motion with sloshing oscillations in a partially filled container.
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.
It is illustrate that, during the engineering research, the dynamical behaviors affected by the nonlinear factors and the internal resonance are very huge.
In this paper an investigation of the dynamic characteristics of liquid sloshing in observations and measurements of the nonlinear effects in the sloshing test.
In the nonlinear theoretical analysis, the modal equations of motion are derived for the two predominant sloshing modes as well as five higher sloshing modes. The linear viscous terms are incorporated in order to consider the damping effect of sloshing. The expressions for the frequency response curves are determined using van der pol’s method.
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.
Nakayama and washizu (1980) used the finite element method (fem) to study 2-d problem of non-linear liquid sloshing in a rectangular tank under pitch.
Abstract: an investigation of parametrically-excited sloshing in a two-dimensional (2d) rectangular tank with finite liquid depth is described. The analysis is based on the adaptive multimodal approach of nonlinear sloshing in a rectangular tank, described in faltinsen and timokha (2001).
The natural sloshing frequencies of the liquid sloshing in a circular cylindrical tank with a coaxial or an off-center circular pipe, an elliptical cylindrical tank with an elliptical pipe, a circular cylindrical tank with multiple pipes are estimated with the introduced method by assuming an ideal (inviscid and incompressible) liquid.
The dynamics of a linear spacecraft mode coupled to the nonlinear low-gravity slosh of a fluid in a cylindrical tank is investigated.
Motion can become very non-linear, surface slopes can approach infinity. Experimental investigations of liquid sloshing in a partially-filled rigid rectangular.
Experimental and numerical investigation of 2d sloshing with slamming. 19th international workshop on water waves and floating body, cortona, italy. Multidimensional modal analysis of nonlinear sloshing in a rectangular tank with finite water depth.
In this study, the behavior of tld is investigated experimentally and numerically. Conducted to investigate the characteristics of the shallow water sloshing.
Benjamin bouscasse, matteo antuono, andrea colagrossi* and claudio lugni. Numerical and experimental investigation of nonlinear shallow water sloshing.
A nonlinear analysis is carried out for the motion of the inviscid, incompressible fluid in a two‐dimensional, rigid, open container which is subjected to forced sinusoidal pitching oscillation. Firstly, the problem is defined as a nonlinear initial‐boundary value problem by the use of a governing differential equation and boundary conditions.
This paper is concerned with the experimental studies on the sloshing response of liquid-filled containers. A three-dimensional finite element analysis is carried out for the numerical simulation of this problem. The effects of sloshing are computed in the time domain using newmark's time integration scheme. A simple experimental setup is designed and fabricated in-house to conduct experiments.
The parametric excitation of an elevated water tower experiencing sloshing hydro-dynamic impact is studied using the multiple scales method. The liquid sloshing mass is replaced by a mechanical model in the form of a simple pendulum experiencing impacts with the tank walls.
An investigation on two-dimensional nonlinear sloshing in rectangular tank. Proceedings of the asme 2015 34th international conference on ocean, offshore and arctic engineering.
The contributions of a variety of nonlinear factors, outside waves and inside sloshing induced forces, as well as their influences on body coupled sway and roll motion were investigated. The induced forces are due to the changes in the transient wet surface of the floating body and full nonlinear sloshing.
Slosh container system: comparitive study of linear and non-linear sliding surfaces in sliding mode controller for slosh free motion.
The nonlinear liquid sloshing dynamics under sway and rotational excitations is described for different container geometries. This article will discuss recent developments of numerical algorithms and computer codes capable to describe breaking waves and extreme sloshing impacts.
(2016) investigated two dimensional sloshing under combined excitations. (2000) derived the analytical solution of sloshing in rotating containers.
Aug 29, 2014 let me give just a few examples from my own research that i've been involved in that i think illustrate the principles i've just been describing.
This study aimed to examine the effect of rigid and flexible foundations on the response by a semiburied water storage reservoir. In this study, the reservoir support conditions of both flexible and inflexible states were studied. The seismic behaviour of reinforced and prestressed concrete reservoirs was compared based on their support conditions.
Mar 5, 2018 we study the effect of a time-periodic, lateral acceleration on the two-dimensional flow of a fluid with a free surface subject to surface tension,.
Model, as well as to study nonlinear sloshing in a prismatic tank with the baffles a nonlinear regime slosh model for bare spherical tanks was developed.
Vehicle was simulated throughout first- stage flight by using planar, nonlinear equations- of-motion with time-varying coefficients. Vehicle dynamics were represented by rigid- body, flexible-body, and fuel- sloshing degrees of freedom. Made through a wind disturbance randomly selected from one synthetic and five measured wind profiles.
Based on the study of the effects of impermeable baffle height, amplitude and numerical investigation of sloshing in rectangular tank with permeable baffle.
Computational fluid dynamics simulations of nonlinear sloshing in a rotating rectangular tank using the level set method.
Experimental and theoretical studies of sloshing waves in a rectangular channel in the vicinity of the second cutoff frequency are presented. Sloshing waves were generated by a computer-controlled segmented wavemaker consisting of four independent modules.
No reza firoozkoohi – experimental and theoretical investigation of the effect of screens on sloshing nonlinear adaptive modal method • free-surface nonlinearity couples symmetric and anti-symmetric modes; many modes are included (20 modes) • asymptotic ordering of generalized coordinates depend on the frequency.
Numerical and experimental investigation of nonlinear shallow water sloshing benjamin bouscasse matteo antuono andrea colagrossi andrea. It 2 and claudio lugni 2 1 cnr-insean, rome, italy claudio lugni:.
The aim of this paper is the investigation of a layered sloshing fluid system using both a new hamiltonian mathematical model and new laboratory experiments. The mathematical model is defined for a cylindrical tank with an arbitrary shape and subjected to an arbitrary rigid motion.
Two-dimensional nonlinear parametric sloshing in the irregular tanks: numerical analysis and experimental investigation.
2020年7月24日 in this study, the sloshing motion in a high filling level tank caused by to analyze the broadband frequency nonlinear displacement of the tank.
Sloshing, a highly nonlinear free-surface movement of fluid in partially filled tanks, is an important subject in fluid-structure interaction (fsi) problems. Violent sloshing occurs in partially filled tanks during earthquakes can cause dynamic loads on the tank structure.
An investigation of nonlinear sloshing liquid vibrations in a rectangular tank supported by an elastic structure that is subjected to a vertical and sinusoidal excitation reveals that liquid sloshing occurs when the structure’s natural frequency is approximately equal to the natural frequency of sloshing, that is, in the state of one-to-one.
Two-dimensional nonlinear sloshing of an incompressible fluid with irrotational flow in a rectangular tank is analysed by a modal theory.
The liquid sloshing in tanks with and without baffle are simulated by the nonlinear boundary element method. The computational investigation is supported by four examples, which are tank without baffle, tank with horizontal baffle, tank with vertical baffle and tank with t-shaped baffle.
Jun 10, 2019 in this study, the boundary element method–finite element method (bem-fem) model is employed to investigate the sloshing and flexibility.
An experimental rig was developed to study non-linear sloshing in a tank of rectangular dimension. The study meant to observe the effect of baffles on damping the free surface displacement of the fluid under non-linear sloshing excitation for various fill levels.
We consider nonlinear oscillations of an ideal incompressible liquid in a partially filled vertical semicircular cylindrical tank. We construct approximate periodic solutions for a four-mode system that describes nonlinear oscillations in a semicircular cylindrical tank under the action of a perturbation force in the plane of the barrier.
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