2D Numerical ISPH Wave Tank for Complex Fluid–Structure Coupling Problems

Liu, Xin; Shao, Songdong; Lin, Ping; Tan, Soon Keat

doi:10.17736/ijope.2016.ak09

Cited by 6 publications

(2 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The middle-filling-level sloshing in different tanks under different excitations has been the topic of numerous researches. A large portion of these studies focused on the sloshing in rectangular tanks under single-degree-of-freedom (longitudinal) translational (Koh et al, 2012;Liu and Zhang, 2019;Liu et al, 2016;Lu et al, 2018;Meng et al, 2020;Pal and Bhattacharyya, 2010;Xue et al, 2017;Xue and Lin, 2011;Zheng et al, 2017) and rotational (Bulian et al, 2014;Chen et al, 2013;Delorme et al, 2009;Souto-Iglesias et al, 2015) excitations. In these cases, the simplification of two-dimensional (2D) waves gives satisfactory predictions of the sloshing wave profile and pressure.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional sloshing in a scaled membrane LNG tank under combined roll and pitch excitations

et al. 2020

View full text Add to dashboard Cite

This paper experimentally investigates the three-dimensional sloshing in a membrane-type LNG (liquefied natural gas) tank under combined roll and pitch excitations. Seven groups of roll and pitch amplitudes are studied. For each group, the roll and pitch have the same frequency, and around ten frequencies are tested in a frequency band that ranges from 0.5 times of the resonance frequency in the length direction of the tank to 1.4 times of the resonance frequency in the tank breadth. The characteristics of the sloshing waves and impact pressures are analysed in detail. It is found that the steady-state sloshing waves can be classified into four patterns: the length-dominant wave, swirling wave, diagonal wave, and breadth-dominant wave. Highlighted is the swirling wave that is observed in most of the cases where the roll and pitch amplitudes are significant and the excitation frequency locates between the resonant frequencies in the two directions. It is hypothesized that the rotational motion of the tank imposes necessary initial conditions to trigger the swirling wave. The swirling wave is always associated with wave impingements at tank corners and induce violent impact pressures. The practical implementation is that reinforcements of the membrane layer should be added or the sloshing wave should be suppressed near the tank corner to mitigate the damages to the interior layer of the membranetype LNG tank.

show abstract

Section: Introductionmentioning

confidence: 99%

Three-dimensional sloshing in a scaled membrane LNG tank under combined roll and pitch excitations

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Since Monaghan [8] pioneered the first simulation of a simple dam break problem using SPH, it has been successfully applied to fluid mechanics problems such as wave overtopping [9,10] and wave slamming [11,12]. Later it has been extended to solve fluid-structure interaction problems including wave interactions with caisson breakwaters [13,14], with floating bodies [15][16][17][18] and with porous structures [19][20][21][22] as well as wave interactions with mound breakwater protected by armour blocks being discretized using SPH particles [23,24]. Nevertheless, the studies mentioned above have all focused on two dimensional applications of SPH and few researches are confronting 3D problems due to the high computational cost of 3D SPH models except some applications concerned with dam break [25][26][27] and wave breaking [23,28,29].…”

Section: Introductionmentioning

confidence: 99%

A SPH numerical wave basin for modeling wave-structure interactions

Wen

Ren

Dong

et al. 2016

Applied Ocean Research

View full text Add to dashboard Cite

. (2016). A SPH numerical wave basin for modeling wave-structure interactions. Applied Ocean Research, 59, 366-377. DOI: 10.1016/j.apor.2016 General rights Copyright and moral rights for the publications made accessible in Discovery Research Portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from Discovery Research Portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain.• You may freely distribute the URL identifying the publication in the public portal. Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Abstract: Based on a parallel SPH-LES model, a three dimensional numerical wave basin is developed to study wave interaction with coastal structures. The OpenMP programming technology combined with an existing MPI program contained in the parallel version of SPHYSICS code has been implemented to enable the simulation of hundred millions of particles running on a computer cluster. As part of the numerical basin development work an active absorbing wave maker and a sponge layer are introduced. The dynamic boundary conditions are also corrected to reduce the spurious effects. Wave generation and propagation in the numerical wave basin is first tested and confirmed with analytical results. Then, the model is applied to simulate wave interactions with a vertical breakwater and a vertical cylinder in order to further assess the capability of the numerical wave basin. The predicted free surface elevation near the vertical breakwater is compared with the experimental data while the horizontal forces and overturning moments acting on the vertical cylinder are verified with the analytical results. In all these cases the model results show excellent agreement with the validation data.

show abstract