Investigation of sloshing damping in baffled rectangular tanks subjected to the dynamic excitation

Goudarzi, Mohammad Ali; Sabbagh-Yazdi, Saeed-Reza; Marx, W.

doi:10.1007/s10518-009-9168-8

Cited by 64 publications

(16 citation statements)

References 33 publications

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“…The subject that partially filled liquid tanks are prone to violent sloshing under certain dynamic conditions has been shown in previous studies (Lee et al 2002;Goudarzi and Sabbagh-yazdi 2009;2010). When the frequency of a tank excitation is close to the natural frequency of liquid sloshing, the enhanced fluid motion creates high impact loads on the tank walls and ceiling which can cause several structural damages (Chen et al 2009).…”

Section: Introductionmentioning

confidence: 83%

An Innovative Roof Shape in Liquid Storage Tanks to Reduce Dynamic Sloshing Effects

Nouraeidanesh

Kabiri

Goudarzi

2018

JAFM

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In this study, a new type of tank roof form is suggested to reduce the high impact forces caused by sloshing. Using this roof allows the tank designers to consider less freeboard, which is economically valuable. For this purpose, an experimental investigation has been implemented to evaluate the efficacy of the proposed roof to distribute the contained liquid impact forces in several time stages. In these experimental measurements, a series of shaking table tests are conducted for a partially filled tank under harmonic and various earthquake excitations for both typical and proposed tank roof forms. The liquid impact forces are reasonably evaluated and compared for both types of tank roof. The efficacy of the proposed roof design is validated by experimental results and it is shown that the sloshing loads can significantly be reduced up to an average of 50% for the dimensions considered in the experiments.

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Section: Introductionmentioning

confidence: 83%

An Innovative Roof Shape in Liquid Storage Tanks to Reduce Dynamic Sloshing Effects

Nouraeidanesh

Kabiri

Goudarzi

2018

JAFM

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“…In order to verify the numerical modeling of the tanks in FEA at first the numerical finite element model of a tank, previously tested at the Hydraulic Institute of Stuttgart University on shake table by Goudarzi and his colleagues (results were published in 2010 [7]), was developed by the employed computer program, and the results were compared. Verification results can be found in a previous work of the authors [8], and include the cases of sinusoidal base excitations at the first sloshing mode (resonance), and also a frequency lower the resonance frequency.…”

Section: Finite Element Modeling and Its Verification -Scaling Effectsmentioning

confidence: 99%

The effects of multiple vertical baffles on sloshing phenomenon in rectangular tanks

Hosseini

Farshadmanesh

2011

WIT Transactions on the Built Environment

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One of the phenomena in storage tanks subjected to earthquake excitations is the sloshing of impounded liquid. The use of baffles for reducing the sloshing effects has been taken into consideration by some researchers in recent years, however, the use of multiple baffles has not been taken into consideration so much. In this study the effect of using multiple vertical baffles in rectangular tanks has been investigated numerically by Finite Element Analyses. After verification of the numerical modeling, tanks with various scales were analyzed subjected to both harmonic and seismic excitations with various intensities to find out the effect of scaling factor. Then, various number of vertical baffles form 1 to 4, were considered at the upper level of the tank and analyses were repeated to realize the effect of baffles on the sloshing. The maximum water level fluctuation was calculated for comparison. Different values were also considered for the submerged depth of baffles to find the more effective depth in decreasing the sloshing effect. Numerical results show that for each series of earthquakes with similar frequency content it is possible to find an optimal number of baffles to minimize the sloshing effect. Also for each number of baffles it is possible to find an optimal submerged depth of baffles for minimizing the sloshing effect.

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“…In one study, the shaking table test was conducted to classify the resonant sloshing behavior of the liquid in a rectangular water tank and to verify the theoretical model, where the sloshing water level was measured using a wave gauge [12]. In another study, the shaking table test was conducted after installing a sloshing reduction device for the horizontal and vertical directions in an acrylic model tank, where the sloshing water level was measured using an ultrasonic sensor [13]. The same test was conducted in another study to experimentally verify the validity of the consistent particle method for the numerical simulation of sloshing, where the sloshing behavior was measured using a wave gauge and a water pressure gauge [14].…”

Section: Introductionmentioning

confidence: 99%

Non-Contact Water Level Response Measurement of a Tubular Level Gauge Using Image Signals

Kim

Park

Jeon

et al. 2020

Sensors

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The occurrence of excessive fluid sloshing during an earthquake can damage structures used to store fluids and can induce secondary disasters, such as environmental destruction and human casualties, due to discharge of the stored fluids. Thus, to prevent such disasters, it is important to accurately predict the sloshing behavior of liquid storage tanks. Tubular level gauges, which visually show the fluid level of a liquid storage tank, are easy to install and economical compared to other water level gauges. They directly show the fluid level and can be applied for various fluids because they can be constructed with various materials according to the fluid characteristics and the intended use. Therefore, in this study, the shaking table test was conducted to verify the validity of the method for measuring the water level response of the tubular level gauge installed on a liquid storage tank using image signals. In addition, image enhancement methods were applied to distinguish between the float installed in the tubular level gauge and the gray level of the background.

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Investigation of sloshing damping in baffled rectangular tanks subjected to the dynamic excitation

Cited by 64 publications

References 33 publications

An Innovative Roof Shape in Liquid Storage Tanks to Reduce Dynamic Sloshing Effects

An Innovative Roof Shape in Liquid Storage Tanks to Reduce Dynamic Sloshing Effects

The effects of multiple vertical baffles on sloshing phenomenon in rectangular tanks

Non-Contact Water Level Response Measurement of a Tubular Level Gauge Using Image Signals

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