Performances of Different Turbulence Models for Simulating Shallow Water Sloshing in Rectangular Tank
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RESEARCH ARTICLE
Performances of Different Turbulence Models for Simulating Shallow Water Sloshing in Rectangular Tank Mohammad Kazem Tahmasebi 1 & Rahim Shamsoddini 1 & Bahador Abolpour 2 Received: 12 June 2019 / Accepted: 1 May 2020 # Harbin Engineering University and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Liquid sloshing is a common phenomenon in the transportation of liquid-cargo tanks. Liquid waves lead to fluctuating forces on the tank walls. If these fluctuations are not predicted or controlled, for example, by using baffles, they can lead to large forces and momentums. The volume of fluid (VOF) two-phase numerical model in OpenFOAM open-source software has been widely used to model the liquid sloshing. However, a big challenge for modeling the sloshing phenomenon is selecting a suitable turbulence model. Therefore, in the present study, different turbulence models were studied to determine their sloshing phenomenon prediction accuracies. The predictions of these models were validated using experimental data. The turbulence models were ranked by their mean error in predicting the free surface behaviors. The renormalization group (RNG) k–ε and the standard k–ω models were found to be the best and worst turbulence models for modeling the sloshing phenomena, respectively; moreover, the SST k–ω model and v2-f k-ε results were very close to the RNG k–ε model result. Keywords Volume of fluid . Turbulence models . Shallow water sloshing . Free surface . OpenFOAM . Liquid tanks . Renormalization group
1 Introduction The liquid motion in vessels and containers is called sloshing. The motion of walls is transferred to the liquid, a process categorized as fluid–structure interaction (FSI). Currently, the interaction between fluid and structures is an important problem in several industries. Pumps, turbines, airplanes, and ships are examples of systems with FSI problems. To investigate this problem, experimental and numerical methods are used. Eulerian and Lagrangian numerical methods have Article Highlights • Eight different turbulence models were considered and the slashing phenomenon was tested with these eight models. • For comparison, an experimental model was used in which a crank and slider mechanism is used to create linear oscillating motion. • Free surface variations were compared at three different times. * Rahim Shamsoddini [email protected] 1
Department of Mechanical Engineering, Sirjan University of Technology, Sirjan 7813733385, Iran
2
Department of Chemical Engineering, Sirjan University of Technology, Sirjan 7813733385, Iran
been applied to simulate FSI problems. Eulerian methods are usually grid-based; therefore, the motion of a solid body grid is defined and imposed during any iterations. One of the most important problems in the free-surface flow is liquid sloshing in tanks, which is a well-known phenomenon in liquid transport tanks. Sloshing may create great forces and momentums, and consequently, controlling the tank and its carrier becomes difficult a
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