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Numerical study of sloshing motion on unstructured mesh using UMTHINC
Citation Link: https://doi.org/10.15480/882.3328
Publikationstyp
Conference Paper
Date Issued
2019-09
Sprache
English
Author(s)
Herausgeber*innen
TORE-DOI
TORE-URI
Article Number
19
Citation
11th International Workshop on Ship and Marine Hydrodynamics (IWSH2019), Paper 19
Contribution to Conference
The numerical simulations of sloshing motions are performed for different test cases with various filling levels and oscillation frequencies. The numerical results are analyzed and compared with experimental data. The numerical computations are performed with a Volume Of Fluid (VOF) based Reynolds-Averaged Navier-Stokes (RANS) solver. Our in-house numerical solver employs the unstructured multi-dimensional tangent hyperbolic interface capturing method (UMTHINC) for free-surface capturing combined with various turbulence models. The sloshing motion is numerically modeled using the body-force method which introduces a source term into the momentum equation corresponding to the tank motion profile.
The numerical results of impact pressure and free-surface are compared with published experimental data wherever possible. The effect of turbulence model choice on loading predictions is highlighted by studying several RANS models and analyzing its effect on fluid motion and impact pressure. The effect of tank internal structures is studied by considering two approaches: finite thickness approach and zero-thickness approach. The developed solver is able to accurately capture the complex interface structure without smearing even with long time integration. The results showed a favorable agreement of impact pressure as well as the general fluid motion.
The numerical results of impact pressure and free-surface are compared with published experimental data wherever possible. The effect of turbulence model choice on loading predictions is highlighted by studying several RANS models and analyzing its effect on fluid motion and impact pressure. The effect of tank internal structures is studied by considering two approaches: finite thickness approach and zero-thickness approach. The developed solver is able to accurately capture the complex interface structure without smearing even with long time integration. The results showed a favorable agreement of impact pressure as well as the general fluid motion.
Subjects
Computational Fluid Dynamics (CFD)
RANS
Sloshing load
THINC
Volume of Fluid
DDC Class
600: Technik
620: Ingenieurwissenschaften
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