Investigation on the tank vehicle dynamic performance influenced by fluid sloshing using multidisciplinary simulation technique

In the current study impacts of fluid sloshing on the dynamic performance of a partially filled tank vehicle have been investigated. A nonlinear and three-dimensional solver of fluid flow equations were coupled with dynamic equations of a three degrees of freedom moving tank vehicle through an intermediate software to simulate the fluid sloshing behavior inside the tank and the vehicle dynamic performance influenced by liquid sloshing. The fluid sloshing solver is based on corrected Navier-Stokes equations which are included some additional terms owed to taking tank vehicles motions into account. In the present work we used “body weighted method” to consider the effects of accelerating motions of the tank on fluid’s elements. The mentioned method was used to simulate the partially filled container during accelerating horizontal motion which crashed an obstacle after a while from the start point. Computed results were compared to experimental results from literatures to valid the proposed method. The water level evolution on the left wall of the container compared to the experimental one showed a good agreement. Moreover, the two-dimensional rectangular container subjected to periodic external excitation was considered. The pressure history on the tank wall was compared to the measured impact pressure to figure out the ability of the scheme to capture the flow properties to anticipate the exerted forces on the walls. One is observed that there is a good agreement between the computed and measured results. Furthermore, the coupled tank vehicle-fluid simulation has been done during vertical excitations through passing symmetric bumps.