چكيده به لاتين
In this thesis, the tank geometry for baffled and clean-bore tank configurations has been designed and the structured and unstructured mesh has been used for slosh simulations in FLUENT software to investigate the effects of using spherical baffles on the roll stability of partially-filled tank vehicles. Initially, the effect of using different tank/baffle configurations and different baffle radius on liquid slosh force and overturning moment of sloshing liquid inside the tank has been studied using transient slosh model coupled with vehicle dynamics. Results showed that, in this case, the liquid slosh forces and moments have significant magnitudes. Results also showed that using spherical baffles yields to lower fluctuations of forces, moments and position of CG point, regardless of fill volume. For instance, the maximum slosh overturning moment has reductions u to 20% in case of the half-filled tank.
The results of the coupled model show that for the clean-bore tank vehicles, the roll angle is maximum while using spherical baffles reduces the roll angle of the vehicle. Results, also, show that the lateral load transfer ratio of the vehicle with liquid cargo is greater than that of the vehicle with equivalent rigid cargo and using spherical baffles yields to lower load transfer ratio magnitudes. Results show that spherical baffles could be used as an anti-slosh device. Results showed the maximum overturning moment for a half-filled tank vehicle equipped with spherical baffles, is almost 40% lower than that of clean-bore tank vehicles.
