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Author Vallés Rebollo, Xavier |
Abstract This research aims to study how the angle and dimensions of a single baffle affect the dynamics of a fluid in a closed rectangular tank under an accelerated harmonic vibration in resonance. A rectangular half-deformable tank with a single-center submerged baffle has been simulated using ANSYS FLUENT 2020 R2. The study aims to characterize the effect of changing the deflector angle; hence 14 simulations have been performed: no deflector, 90 °, and 30 °, 60 °, 120 °, and 150 °, either by keeping the length of the deflector or the projected height constant. The Computer Fluid Dynamics (CFD) method used is Volume Of Fluid (VOF) and Large Eddy Simulation (LES) to predict fluid motion in 2 dimensions, which have been compared with experimental data with excellent agreement. The movement is sinusoidal in the + X direction, with an oscillation frequency equal to its first mode of vibration; gravity is also considered. The parameters studied have been the elevation of the free surface, values in three different points and maximum; the position, velocity, and acceleration of the center of gravity; and forces against the tank walls. The 90 ° angle has been found to have the most significant damping effect, stabilizing free surface elevation, reducing the center of gravity dispersion, and leveling impact forces. The smaller angles also control the splash and stabilize it. |
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Director García Granada, Andrés Amador |
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Degree IQS SE - Master’s Degree in Industrial Engineering |
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Date 2021-04-30
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