Nonlinear sloshing in rectangular tanks under forced excitation

Zhao, Dongya; Hu, Zhiqiang; Chen, Gang; Lim, Serena; Wang, Shuqi

doi:10.1016/j.ijnaoe.2017.10.005

Cited by 40 publications

(14 citation statements)

References 31 publications

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“…The CFD method has been developed, which more accurately examines the response of the fluid to different excitations. [15][16][17] Yan et al 18 simulated twodimensional nonlinear sloshing in circular and conical tanks under ramp-step lateral acceleration using FLUENT CFD code. Fluid slosh parameters such as the coordinates of centre of gravity as well as vertical and horizontal forces are expressed as secondorder polynomial regression functions.…”

Section: Introductionmentioning

confidence: 99%

Development of a coupled numerical model for the interaction between transient fluid slosh and tank wagon vibration

Rahmati-Alaei

Sharavi

Zakaria³

2018

Proceedings of the Institution of Mechanical Engineers, Part K:

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In this paper, a coupled model is developed to evaluate the effect of transient fluid slosh on the railway tank wagon dynamic vice versa. This model has computational complexity in solving the Navier–Stokes equations and nonlinear differential equations of tank wagon vibration with nonlinear wheel–rail contact. The coupled model can be used as an effective and robust tool compared to simplified models for assessing the stability of tank wagon. The transient fluid slosh model is analysed using the computational fluid dynamic method combined with the volume of fluid technique. The tank wagon dynamic model is solved using the fourth-order Runge–Kutta method based on the 19 degrees of freedom model with longitudinal, vertical, roll and pitch vibrations. The wheel–rail contact is considered according to nonlinear Hertzian and Kalker linear rolling contact theories. The fluid slosh model is validated using experimental data. The dynamic response characteristics of the partially filled railway tank wagon are investigated under straight-line braking manoeuvre using the coupled model. The results obtained from a parametric study, including the cross sectional shape and the filled volume show that the modified-oval cross section improves the dynamic response characteristics, which are attributed to its lower fluid's centre of gravity coordinate in the longitudinal direction and low lateral moment transfer of the fluid.

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Section: Introductionmentioning

confidence: 99%

Development of a coupled numerical model for the interaction between transient fluid slosh and tank wagon vibration

Rahmati-Alaei

Sharavi

Zakaria³

2018

Proceedings of the Institution of Mechanical Engineers, Part K:

View full text Add to dashboard Cite

show abstract

“…The key process in the second step is to solve the pressure Poisson equation (PPE) to obtain the pressure field. By combining Equations (1) and (6), the PPE is written as follows:…”

Section: Isph Methodologymentioning

confidence: 99%

“…Now, the common techniques for analyzing the sloshing problem include theoretical, experimental, and numerical methods. Theoretical approaches, such as the analytical solution [2][3][4] or the potential flow theory based method [5,6], can be used to study sloshing tanks of relatively simple geometry and internal structure. Experimental works, on the other hand, have been carried out to study the sloshing behavior in tanks with more complex shapes under different external excitations [7], in spite of the high expenses of site and facility.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on Violent Sloshing with Complex Baffles Using the ISPH Method

Zheng

You

et al. 2018

Applied Sciences

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The Smoothed Particle Hydrodynamics (SPH) method has become one of the most promising methods for violent wave impact simulations. In this paper, the incompressible SPH (ISPH) method will be used to simulate liquid sloshing in a 2D tank with complex baffles. Firstly, the numerical model is validated against the experimental results and the simulations from commercial CFD software STAR-CCM+ for a sloshing tank without any baffle. Then various sloshing tanks are simulated under different conditions to analyze the influence of the excitation frequency and baffle configuration. The results show that the complex baffles can significantly influence the impact pressures on the wall caused by the violent sloshing, and the relevant analysis can help find the engineering solutions to effectively suppress the problem. The main purpose of the paper is to study the practical importance of this effect.

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“…length-dominant, breadth-dominant, diagonal and swirling waves, and their relations with the excitation frequencies, which had been examined for rectangular tanks, but seldom for octagonal prismatic tanks. Zhao et al (2018a) investigated sloshing properties in partially filled rectangular and membrane tank under translational and rotational excitations.…”

Section: Introductionmentioning

confidence: 99%

Fluid dynamics analysis of sloshing pressure distribution in storage vessels of different shapes

et al. 2019

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A series of numerical simulations were performed to investigate the influences of storage vessels shapes on sloshing dynamics under horizontal excitation by employing the open source code OpenFOAM, which has been extensively validated by experimental data for the sloshing flow problem. The results show that the membrane liquefied natural gas (LNG) tanks are subject to lower impact pressure than the cylindrical, rectangular and spherical tanks with the same volume of liquid and the overall tank dimensions, as the slope at the storage vessels bottom changes the flow direction of the liquid and therefore reduces the impact on the vertical wall. In the cylindrical and spherical tanks, higher impact pressure was found on the wall directly opposite to the excitation direction and the maximum impact point will shift away from the external excitation direction as the wave breaks up violently until a quasi-steady state of the sloshing wave rotating along the side wall is reached. The curved surface of the spherical tank could also help reduce the impact pressure when compared with the cylindrical tank.

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Nonlinear sloshing in rectangular tanks under forced excitation

Cited by 40 publications

References 31 publications

Development of a coupled numerical model for the interaction between transient fluid slosh and tank wagon vibration

Development of a coupled numerical model for the interaction between transient fluid slosh and tank wagon vibration

A Comparative Study on Violent Sloshing with Complex Baffles Using the ISPH Method

Fluid dynamics analysis of sloshing pressure distribution in storage vessels of different shapes

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