## 4 Conclusions  
In this study, the sloshing responses of a prismatic tank with an approximate volume of an automobile fuel tank under different horizontal harmonic input amplitudes, baffle structures, filling rates, and different types of liquid were investigated. First, a validity study was performed using a reference study, and the reliability of the simulation method was verified. The volume of fluid model was used to simulate a two-phase flow in the tank. Tanks with seven baffle types were created, meshed, simulated, and analyzed using the computational fluid dynamics method. The findings from the simulation results are summarized below. Considering the ES31100-01 engineering standard shaking test criteria values, harmonic motion in the horizontal direction was applied to the seven baffled and unbaffled tanks. We examined the effect of baffle designs on sloshing for 50% filling depth. In the second stage of the study, the effect of low excitation amplitude motion on sloshing behavior was also investigated. It was observed that with large excitation amplitude inputs, the amplitude of changes in sloshing pressure increased. The baffle structures could not adequately suppress the sloshing motion at high amplitudes. It was observed that increasing the amplitude and frequency values made the fluid dynamic behavior more violent due to three-dimensional effects. Even if the baffle structures were used, the fluid reached the ceiling, and the integrity of the fluid was disrupted. However, the time required to more effectively regulate pressure changes could be shortened according to the baffle type. At the lower amplitudes of excitation, the baffles had the effect of regulating the pressure distribution and preventing sudden high-value hydraulic jumps in both sloshing movements. At the lower amplitudes, the fluid movement could be suppressed because of the hydrodynamic damping induced by the baffle on the liquid. It was observed that changes in baffle structures also changed the sloshing behavior, and the pressure distributions of the tanks with one flat baffled and multi-baffled structure could dampen the sloshing movement well. Although it was seen that the use of a baffle affected reducing the amplitude of the pressure swing, it was concluded that the baffle design is also effective in this response. We conducted our analyses for 50-70% filling depth and examined the effectiveness of the baffles. It was observed that when the liquid depth in the tank increased, the pressure value on the side walls increased, and the liquid fluctuation decreased. Tank systems can be designed to carry many different types of fluids. The behavior of different fluids under the effects of sloshing phenomena was also examined comparatively, and it was seen that the fluid type also significantly affected the system response. In the tank design, the fluid type to be transported, the fill rate, the baffle structure, and the input signals affect the sloshing movement. For this reason, in cases where the amount of fluid changes, as in automobiles, the sloshing situation in the tank will also change constantly. In developing tank designs, the most challenging situation that the system will be exposed to should be taken into account, and the pressure changes that the tank may be exposed to and the forces acting on the system should be determined. Conceptualization, E.E.T. and E.K. ; methodology, E.E.T. and E.K. ; validation, E.K. ; analysis: E.K. ; investigation, E.E.T. and E.K. ; writing--original draft preparation, E.E.T. ; writing--review and editing, E.E.T. All authors have read and agreed to the published version of the manuscript. **Funding:** The authors gratefully acknowledge the support of Ministry of Science, Industry and Technology of the Republic of Turkey under SAN-TEZ project number 0157.STZ.2013-1. **Data Availability Statement:** Datasets related to these studies, findings, and results as reported are included in the manuscript itself. **Conflicts of Interest:** The authors declare no conflict of interest.