The influence of flexible fluid structure interactions on sway induced tank sloshing dynamics

Saghi, Reza; Hirdaris, Spyros; Saghi, Hassan

doi:10.1016/j.enganabound.2021.06.023

Cited by 16 publications

(9 citation statements)

References 45 publications

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“…Numerous studies on flexible FSI (FFSI) have been published. FFSI is evident in multiple applications, including blood valves, enormous liquid containers [1,2] for liquified natural gas (LNG) [3], or tuned liquid dampers (TLDs) [4]. From an FSI standpoint, the hydrodynamic pressure acting on a shell wall can be highly influenced by the flexibility of the tank wall [1,5].…”

Section: Introductionmentioning

confidence: 99%

“…FFSI is evident in multiple applications, including blood valves, enormous liquid containers [1,2] for liquified natural gas (LNG) [3], or tuned liquid dampers (TLDs) [4]. From an FSI standpoint, the hydrodynamic pressure acting on a shell wall can be highly influenced by the flexibility of the tank wall [1,5]. The boundary condition problem at fluid-solid surfaces must be clarified to consider the effect of FSI on the dynamic characteristics of elastic water tanks [6].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, several numerical approaches combining FEM with other numerical methods, have been proposed to predict fluid movement, including smoothed particle hydrodynamics (SPH/FEM) [20][21][22], moving particle simulation (MPS/FEM) [23,24], and the boundary element method (BEM/FEM) [1,14]. The problem becomes even more complicated when two-way FSIs is considered [1,25]. In [23],…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Analysis of the Influence of Fluid–Structure Interactions on the Dynamic Characteristics of a Flexible Tank

Bui

2024

J. Vib. Eng. Technol.

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This study evaluated the effect of two-way fluid-structure interactions (FSIs) on the dynamic characteristics of flexible storage liquid tanks. A hybrid approach, combining the finite volume method (FVM) and the finite element method (FEM), denoted as FVM/FEM, was used to model the response of a flexible water tank under seismic loading. The fluid domain was simulated using FVM, while the structural domain was represented using FEM. A two-dimensional interaction equation was solved at the contact surface between an elastic tank wall and the fluid by tuning the relaxation parameter and convergence conditions. The proposed FVM/FEM model provides fundamental insights for modeling interactions two-way FSI. The model enables evaluating the effect of considering two-way FSI on the dynamic characteristics of a tank flexible to a rigid tank wall. The accuracy of the coupling FVM/FEM method was confirmed through a comparative experiment with previous studies and design code, including the quantities of natural frequency, liquid sloshing, and hydrodynamic pressure. The results showed that the frequency of flexible tank walls differed from that of rigid walls, especially the hydrodynamic pressure of liquid motion acting on the tank. The peak hydrodynamic pressure of the fluid acting on thick-walled when considering FSI is 38.2 kPa, deviating only 0.2% from the ACI standards (38.12 kPa) or 5.47% with EC8 (36.11 kPa). However, the study shows that when considering the two-way interaction for thin-walled tanks, this deviation from ACI and EC8 increases significantly to 12.2% and 16.8%, respectively. From that, the numerical results show a "threshold value" is revealed to distinguish flexible or rigid tanks. If the tank stiffness exceeds this threshold, then the thicker the tank, the lower the hydrodynamic pressure. However, if the tank stiffness is lesser, vice versa. A good agreement is observed between the numerical, analytical, published, and experimental data.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Analysis of the Influence of Fluid–Structure Interactions on the Dynamic Characteristics of a Flexible Tank

Bui

2024

J. Vib. Eng. Technol.

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“…The numerical approximation of immiscible multiphase flows with complex interfacial rheology has attracted substantial attention during the last two decades [1]. These interfacial phenomena are ubiquitous in many industrial and engineering applications such as evaporation and condensation [2], sloshing and flooding events [3,4], nuclear and chemical reactors [5], fluidized bed [6], liquid vaporization [7], combustion and fuel atomization [8,9]. In recent years, a considerable amount of research efforts have been devoted to the development of sophisticated mathematical techniques, applicable in the whole range of multi-fluid and multiphase flow configurations.…”

Section: Introductionmentioning

confidence: 99%

New benchmark problems for validation and verification of incompressible multi-fluid flows based on the improved Volume-Of-Fluid (VOF) method

Garoosi

Mahdi

2022

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Faltinsen et al [8], Strelnikova et al [9] and Zhou-Bowers and Rizos [10] devoted to these problems are concerned with liquid sloshing in rigid shell systems. The vibrations of elastic structures containing liquids are analyzed in Avramov [5], Boyko et al [11], Strelnikova et al [12] and Saghi et al [13]. A second class is concerned with two-sided contact with liquids in simulating dynamic characteristics for blades of powerful wind turbines [4], aircraft wings [14], etc.…”

Section: Introductionmentioning

confidence: 99%

Singular and Hypersingular Integral Equations in Fluid–structure Interaction Analysis

Gnitko

KARAIEV

Degtyariov

et al. 2022

WIT Transactions on Engineering Sciences

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The paper presents new computational techniques based on coupled boundary and finite element methods to study fluid-structure interaction problems. Thin shells and plates are considered as structure elements interacting with an ideal and incompressible liquid. To describe the motion of both structural elements and the fluid, the basic relations of the continuous mechanics are incorporated. The liquid pressure is determined by applying the Laplace equation. Two kinds of boundary value problems are considered corresponding to one-sided and two-sided contact of structural elements with the liquid. Integral equations for numerical simulation of pressure are obtained. For a two-sided contact of the structural element with the liquid, hypersingular integral equations are received, whereas singular integral equations with logarithmic singularities describe the problems of one-sided contact. Considering the structure axial symmetry, the integral equations are reduced to one-dimensional ones. The finite element method for determining modes and frequencies of the elastic structure coupled with boundary element method for the hypersingular integral equation is implemented to find the fluid pressure on the structure element with two-sided contact with the liquid. The liquid pressure evaluation in axisymmetric problems is reduced to one-dimensional integral equations with kernels in the form of elliptic integrals. The effective technique is developed for numerical simulation of obtained singular integrals. The same technique is extended to hypersingular integral equations. The frequencies and modes of structure vibrations taking into account the added masses of the liquid are obtained. Thin circular plates and shells of revolution are considered as structure elements in numerical simulations. The accuracy and reliability of the proposed method are ascertained.

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The influence of flexible fluid structure interactions on sway induced tank sloshing dynamics

Cited by 16 publications

References 45 publications

Experimental and Numerical Analysis of the Influence of Fluid–Structure Interactions on the Dynamic Characteristics of a Flexible Tank

Experimental and Numerical Analysis of the Influence of Fluid–Structure Interactions on the Dynamic Characteristics of a Flexible Tank

New benchmark problems for validation and verification of incompressible multi-fluid flows based on the improved Volume-Of-Fluid (VOF) method

Singular and Hypersingular Integral Equations in Fluid–structure Interaction Analysis

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